STAUFF · Replacement Elements · inline line

SF-6621 filter element: specifications & equivalents

Q: What are the dimensions of the SF-6621 filter element?

The published envelope is 95 mm OD × 203 mm length (3.740 × 7.992 in). Confirm against the housing drawing before ordering.

The SF-6621 is a STAUFF inline-line hydraulic filter element, sized 95 × 203 mm OD × length. Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 95 × 203 mm

Line type inline

Partially verified. Fit and grade trace to an official interchange document; dimensional values are compiled from 0 aftermarket listing(s) and must be confirmed against the manufacturer housing drawing. Confidence score 0.85.

Micron rating, media type, collapse pressure and seal material are not printed in the STAUFF interchange listing and are pending extraction from STAUFF product data sheets. Verify against the current STAUFF catalog before ordering.

Specification table

Parameter	Value
Filter type	inline line
Outside diameter OD	95 mm
Length	203 mm
Integral bypass valve	none (housing/valve-dependent)
Source catalog	STAUFF: STAUFF Filter Interchange online database (filterinterchange.com)
Last verified	2026-09-28

Sources: STAUFF — STAUFF Filter Interchange online database (filterinterchange.com) — accessed 2026-09-27.

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

Dimensional drawing

Reference drawing generated from the source values cited on this page — nominal envelope, schematic section, not a manufacturer drawing. The PDF is A3 landscape and vector; the PNG is sized for a WhatsApp preview. Confirm thread, end caps, seal compound and micron/Beta grade against the original element before ordering.

Dimensions & series range

Outside diameter	95 mm (3.740 in)
Overall length	203 mm (7.992 in)

All 95×203 mm interchange elements →

Cross references & equivalents

Equivalent model	Brand	Match level	Note
↔ 561980C1 page in verification queue	Aftermarket	partial	STAUFF Filter Interchange lists 561980C1 (NAVISTAR) as replaced by SF-6621. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits.
↔ 92724 page in verification queue	Aftermarket	partial	STAUFF Filter Interchange lists 92724 (BIGA) as replaced by SF-6621. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits.
↔ 9904103228 page in verification queue	Aftermarket	partial	STAUFF Filter Interchange lists 9904103228 (GROVE) as replaced by SF-6621. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits.
↔ HF6621	Fleetguard	partial	Fleetguard's online catalog lists SF6621 as an interchange for HF6621. 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.

Full chart: STAUFF cross reference chart →

How the SF-6621 model number is decoded

SF-6621STAUFF replacement element part number per the STAUFF Filter Interchange database.

Typical equipment & applications

Replacement element for OEM hydraulic filter housings

Frequently asked questions

What are the dimensions of the SF-6621 filter element?

The published envelope is 95 mm OD × 203 mm length (3.740 × 7.992 in). Confirm against the housing drawing before ordering.

What replaces the SF-6621 filter element?

4 partial match(es) requiring parameter review

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.

Same-envelope elements from other brands

View full interchange →

These 1 catalog element(s) share the 95×203 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.

SF-6604 STAUFF

Other models in the Replacement Elements series

All 4930 (list page 8/10) →

AD-030-B-125-B 83×193 mm AD-030-B-40-B 83×193 mm AD-030-B-60-B 83×193 mm AD-030-B-80-B 83×193 mm AD-030-E-20-B 83×193 mm AD-033-B-40-B 89×226 mm AD-033-B-60-B 89×226 mm AD-033-B-80-B 89×226 mm AD-033-E-10-B 89×226 mm BL-200-E-10-B 86×62 mm

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