Fleetguard · HF Hydraulic · inline line
HF30668 filter element: specifications & equivalents
The HF30668 is a Fleetguard inline-line hydraulic filter element, sized 55 × 66 mm OD × length (ID 19.2 mm), rated at 15 µm absolute (15 µm at β75(c); 25 µm at β200(c) per ISO 16889). Verify against the current manufacturer data sheet before ordering.
Envelope OD × L 55 × 66 mm
Inside diameter 19.2 mm
Filtration rating 15 µm abs.
Beta rating 15 µm at β75(c); 25 µm at β200(c) per ISO 16889
Line type inline
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 | inline line |
| Filtration rating | 15 µm |
| Rating basis | absolute |
| Beta ratio | 15 µm at β75(c); 25 µm at β200(c) per ISO 16889 |
| Outside diameter OD | 55 mm |
| Inside diameter ID | 19.2 mm |
| Length | 66 mm |
| End caps | open-ended cartridge element |
| Integral bypass valve | none (housing/valve-dependent) |
| Manufacturer part no. | HF30668 |
| 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 | 55 mm (2.165 in) |
| Inside diameter | 19.2 mm (0.756 in) |
| Overall length | 66 mm (2.598 in) |
All 55×66 mm interchange elements →
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
|
↔ 132600937 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 132600937 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 170L110A page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 170L110A as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 170L110H page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 170L110H as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 170L123A page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 170L123A as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 170L123GDH20 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 170L123GDH20 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 170P110A page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 170P110A as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 170Z110A page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 170Z110A as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 170Z110H page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 170Z110H as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 170Z123A page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 170Z123A as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 170Z123H page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 170Z123H as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 4004031 page in verification queue | UFI | partial | Fleetguard's online catalog lists 4004031 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 57A501 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 57A501 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 63000004 page in verification queue | UFI | partial | Fleetguard's online catalog lists 63000004 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 7003A page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists 7003A as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ D910G10 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists D910G10 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ D910G25A page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists D910G25A as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FC5008Q020BS page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists FC5008Q020BS as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ GO1785 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists GO1785 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ GO1789 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists GO1789 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ GO1789Q page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists GO1789Q as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HY9712 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists HY9712 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ KPV1500810 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists KPV1500810 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P560706 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P560706 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P567008 page in verification queue | Donaldson | partial | Fleetguard's online catalog lists P567008 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PEL293 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists PEL293 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PFA170325GV page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists PFA170325GV as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PR3363 page in verification queue | Parker | partial | Fleetguard's online catalog lists PR3363 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ PT8998-MPG | Baldwin Filters | partial | Fleetguard's online catalog lists PT8998MPG as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ PT8998-MPG | Baldwin Filters | partial | Baldwin's Form 561 Number-Finder cross-reference lists HF30668 (FLEETGUARD) as replaced by Baldwin PT8998-MPG. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ V0172B1C10 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists V0172B1C10 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ WGAL1711 page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists WGAL1711 as an interchange for HF30668. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ ZL170L123A page in verification queue | Aftermarket | partial | Fleetguard's online catalog lists ZL170L123A as an interchange for HF30668. 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 HF30668 model number is decoded
- HF30668Fleetguard HF-series hydraulic cartridge element part number.
- 66 mmOverall height.
- 55 mmLargest outside diameter.
- 19.2 mmLargest end inside diameter.
- 15 µm at β75(c); 25 µm at β200(c) 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
- “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 HF30668 filter element?
The published envelope is 55 mm OD × 66 mm length with a 19.2 mm inside diameter (2.165 × 2.598 in × 0.756 in ID). Confirm against the housing drawing before ordering.
What micron rating does HF30668 use?
This element is rated 15 µm absolute — 15 µm at β75(c); 25 µm at β200(c) 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 HF30668 filter element?
32 partial match(es) requiring parameter review
How do I read the HF30668 part number?
See the designation decoder above: each segment of HF30668 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 2 catalog element(s) share the 55×66 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.
Other models in the HF Hydraulic series
All 2621 →Reviewed & verified by the ElementRef engineering desk against Cummins Filtration / Fleetguard on 2026-09-28. Read our editorial & correction policy.