Fleetguard · HF Hydraulic · return line

HF6420 filter element: specifications & equivalents

Q: What are the dimensions of the HF6420 filter element?

The published envelope is 93.5 mm OD × 142.5 mm length (3.681 × 5.610 in). Confirm against the housing drawing before ordering.

Q: What micron rating does HF6420 use?

This element is rated 12 µm (nominal class) — TWA 12 µm at β=2 per ISO 16889. Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

The HF6420 is a Fleetguard return-line hydraulic filter element, sized 93.5 × 142.5 mm OD × length, rated at 12 µm class (TWA 12 µm at β=2 per ISO 16889). Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 93.5 × 142.5 mm

Filtration rating 12 µm nom.

Beta rating TWA 12 µm at β=2 per ISO 16889

Thread 2-16 UN-2B

Line type return

Catalog verified. Parameters extracted from the manufacturer’s electronic catalog / official interchange document and checked 2026-09-28. Confidence score 0.90.

Specifications and cross-references are taken from the Fleetguard online catalog API. Where both TWA and Beta ratings are published the conventions differ — verify cleanliness targets, collapse rating and seal configuration against the current Fleetguard data sheet before ordering.

Specification table

Parameter	Value
Filter type	return line
Filtration rating	12 µm
Rating basis	nominal
Beta ratio	TWA 12 µm at β=2 per ISO 16889
Outside diameter OD	93.5 mm
Length	142.5 mm
Thread / connection	2-16 UN-2B
End caps	spin-on baseplate with attached gasket
Flow direction	outside-in
Integral bypass valve	none (housing/valve-dependent)
Manufacturer part no.	HF6420
Source catalog	Cummins Filtration / Fleetguard: Fleetguard online product catalog (fleetguard.com)
Last verified	2026-09-28

Sources: Cummins Filtration / Fleetguard — Fleetguard online product catalog (fleetguard.com) — accessed 2026-09-28.

Fleetguard® and all model designations are trademarks of their respective owners, used here for identification only — ElementRef is an independent reference site, not an authorized Fleetguard distributor.

Dimensions & series range

Outside diameter	93.5 mm (3.681 in)
Overall length	142.5 mm (5.610 in)

All 94×143 mm interchange elements →

Cross references & equivalents

Equivalent model	Brand	Match level	Note
↔ 108668 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 108668 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 11992886 page in verification queue	UFI	partial	Fleetguard's online catalog lists 11992886 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 11993686 page in verification queue	UFI	partial	Fleetguard's online catalog lists 11993686 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 119936862 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 119936862 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 12003619 page in verification queue	UFI	partial	Fleetguard's online catalog lists 12003619 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 1336420 page in verification queue	UFI	partial	Fleetguard's online catalog lists 1336420 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 1474 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 1474 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 1623231 page in verification queue	UFI	partial	Fleetguard's online catalog lists 1623231 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 19982301 page in verification queue	UFI	partial	Fleetguard's online catalog lists 19982301 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 234099 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 234099 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 2340990 page in verification queue	UFI	partial	Fleetguard's online catalog lists 2340990 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 246262 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 246262 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 247050 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 247050 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 247051 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 247051 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 2506785018 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 2506785018 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 281875 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 281875 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 29802075 page in verification queue	UFI	partial	Fleetguard's online catalog lists 29802075 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 31901320 page in verification queue	UFI	partial	Fleetguard's online catalog lists 31901320 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 3213398 page in verification queue	UFI	partial	Fleetguard's online catalog lists 3213398 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 322998 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 322998 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 3229980 page in verification queue	UFI	partial	Fleetguard's online catalog lists 3229980 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 4110147 page in verification queue	UFI	partial	Fleetguard's online catalog lists 4110147 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 4697505 page in verification queue	UFI	partial	Fleetguard's online catalog lists 4697505 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 4700249993 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 4700249993 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 4720309 page in verification queue	UFI	partial	Fleetguard's online catalog lists 4720309 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 51474	WIX Filters	partial	Fleetguard's online catalog lists 51474 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 54609 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 54609 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 551474 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 551474 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 5839HF6420 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 5839HF6420 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 58886136 page in verification queue	UFI	partial	Fleetguard's online catalog lists 58886136 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 6247050 page in verification queue	UFI	partial	Fleetguard's online catalog lists 6247050 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 73118171 page in verification queue	UFI	partial	Fleetguard's online catalog lists 73118171 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 79104646 page in verification queue	UFI	partial	Fleetguard's online catalog lists 79104646 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 8004659 page in verification queue	UFI	partial	Fleetguard's online catalog lists 8004659 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 814780 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 814780 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 81587419 page in verification queue	UFI	partial	Fleetguard's online catalog lists 81587419 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 8320254 page in verification queue	UFI	partial	Fleetguard's online catalog lists 8320254 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 841095100 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 841095100 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 84550621 page in verification queue	UFI	partial	Fleetguard's online catalog lists 84550621 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 85187419 page in verification queue	UFI	partial	Fleetguard's online catalog lists 85187419 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 85474 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 85474 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 88308129 page in verification queue	UFI	partial	Fleetguard's online catalog lists 88308129 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 8890737 page in verification queue	UFI	partial	Fleetguard's online catalog lists 8890737 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 90204732 page in verification queue	UFI	partial	Fleetguard's online catalog lists 90204732 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 9210280004 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 9210280004 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 9210970002 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 9210970002 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 9234580449 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 9234580449 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 92474 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 92474 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 973251 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists 973251 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 9831967 page in verification queue	UFI	partial	Fleetguard's online catalog lists 9831967 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ 9982301 page in verification queue	UFI	partial	Fleetguard's online catalog lists 9982301 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ ABP3001583 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists ABP3001583 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ BT8830	Baldwin Filters	partial	Fleetguard's online catalog lists BT8830 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CA0246 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CA0246 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CK0234099 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CK0234099 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CL247050 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CL247050 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CS0007H page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CS0007H as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CSK5000P25 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CSK5000P25 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ CSK50P25 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists CSK50P25 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ D146735 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists D146735 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ D87214 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists D87214 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ E158745 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists E158745 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ G0350595 page in verification queue	Parker	partial	Fleetguard's online catalog lists G0350595 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ H35182 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists H35182 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HF0642000 page in verification queue	Fleetguard	partial	Fleetguard's online catalog lists HF0642000 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HF0642000JX page in verification queue	Fleetguard	partial	Fleetguard's online catalog lists HF0642000JX as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HF701 page in verification queue	Fleetguard	partial	Fleetguard's online catalog lists HF701 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HY377W page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists HY377W as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ L99184 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists L99184 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ LFH8799 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists LFH8799 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ LL1670261 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists LL1670261 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ M0234099 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists M0234099 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ MCD146735 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists MCD146735 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P552850 page in verification queue	Donaldson	partial	Fleetguard's online catalog lists P552850 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P574731 page in verification queue	Donaldson	partial	Fleetguard's online catalog lists P574731 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P7566 page in verification queue	Donaldson	partial	Fleetguard's online catalog lists P7566 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ PERI325 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists PERI325 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ PSH235 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists PSH235 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ T726001189 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists T726001189 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ VOE11992886 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists VOE11992886 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ VOE11993686 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists VOE11993686 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ VOE119936862 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists VOE119936862 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ VOE2340990 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists VOE2340990 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ VOE247050 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists VOE247050 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ VOE4720309 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists VOE4720309 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ WOH600 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists WOH600 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ Z1250578 page in verification queue	Aftermarket	partial	Fleetguard's online catalog lists Z1250578 as an interchange for HF6420. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.

Interchange levels: full catalog-confirmed drop-in · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the HF6420 model number is decoded

HF6420Fleetguard HF-series hydraulic spin-on filter part number.
142.5 mmOverall height.
93.5 mmLargest outside diameter.
2-16 UN-2BSpin-on mounting thread.
TWA 12 µm at β=2 per ISO 16889Published efficiency ratings.

Typical equipment & applications

Construction, agricultural and industrial hydraulic circuits
Mobile-equipment hydraulic return and pressure lines

Selection pitfalls — read before you substitute

A return-line element is not a pressure-line element: return cartridges (BN4HC low-collapse) tolerate roughly 20 bar differential, while BH4HC pressure executions are rated to 210 bar. Installing a low-collapse element in a pressure housing can rupture the media on cold-start spikes.
This element has no integral bypass — opening pressure is set by the housing’s reusable bypass valve. Confirm the valve setting (commonly 3.4 bar) is present before fitting.
“10 µm nominal” and “12 µm at β1000” can describe the very same media — one is reported at β≥200, the other at β≥1000 per ISO 16889. Compare ratings at the same Beta test point, not just the printed micron number.
Nitrile (NBR) seals are standard for mineral hydraulic oil but fail early in some phosphate-ester fluids and at sustained high temperature; verify seal compound against the fluid data sheet (fluorocarbon/Viton executions may be required).
End-cap geometry and the number/position of O-rings block interchange even when OD and length match — visually compare end caps before fitting, especially with aftermarket cartridges.

Frequently asked questions

What are the dimensions of the HF6420 filter element?

The published envelope is 93.5 mm OD × 142.5 mm length (3.681 × 5.610 in). Confirm against the housing drawing before ordering.

What micron rating does HF6420 use?

This element is rated 12 µm (nominal class) — TWA 12 µm at β=2 per ISO 16889. Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

What replaces the HF6420 filter element?

87 partial match(es) requiring parameter review

How do I read the HF6420 part number?

See the designation decoder above: each segment of HF6420 encodes size, line type, filtration grade and media/collapse execution.

Is a same-envelope aftermarket element always a drop-in replacement?

No. Matching OD and length only proves the cartridge fits the bowl. End-cap style, seal compound, micron/Beta rating, collapse pressure and bypass configuration must also match; the table above tags every equivalent as full, partial or verify for exactly this reason.

How often should a hydraulic return-line element be replaced?

Replace at the housing manufacturer’s recommended differential-pressure setting (commonly signalled by a clogging indicator), or on a time-based service interval when no indicator is fitted — never wait for bypass to open continuously, because unfiltered oil then reaches the valves.

Same-envelope elements from other brands

View full interchange →

These 6 catalog element(s) share the 94×143 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.

HF28859 Fleetguard · 33 µm HF6315 Fleetguard · 33 µm HF6316 Fleetguard · 33 µm HF6351 Fleetguard · 33 µm HF6361 Fleetguard · 25 µm HF7901 Fleetguard · 12 µm

Other models in the HF Hydraulic series

All 2621 →

HF28084 HF28086 HF28088 HF28201 HF28202 97×247 mm HF28652 HF28658 95×193 mm HF28660 HF28662 HF28667

Reviewed & verified by the ElementRef engineering desk against Cummins Filtration / Fleetguard on 2026-09-28. Read our editorial & correction policy.