AF421M Cross Reference

Name: AF421M Fleetguard air filter
Brand: Fleetguard
SKU: AF421M

Fleetguard replacement lookup and OEM interchange guide

36 OEM matches0 alternative filtersair filter

Quick Answer

AF421M is a Fleetguard air filter that replaces 36 OEM part numbers. Use the table below to check which original equipment numbers are covered before you order a replacement.

How to Verify a Replacement

Cross-reference data helps you build a shortlist, but it should not be the last step. Before buying a replacement for AF421M, verify the application, dimensions, seal or thread style, and service interval requirements against your current filter. If the equipment manual or supplier data disagrees with the lookup result, follow the equipment-side specification first.

OEM Part Numbers Replaced by AF421M

OEM Number	Brand	Source
ATLAS 11565	OEM	fleetguard
ATCO 11565	OEM	fleetguard
HAST 11565	OEM	fleetguard
CPG 1408296	OEM	fleetguard
15295	OEM	fleetguard
17801-2020	OEM	fleetguard
UFI 27.926.00	OEM	fleetguard
IVCO 50616424	I-R	fleetguard
MACOM 5295	OEM	fleetguard
MACK 57PS-4670	OEM	fleetguard
NELSN 8505-68	OEM	fleetguard
GMC 8994736	OEM	fleetguard
GMC 8994737	OEM	fleetguard
AF802 FILT A2771	MICRO	fleetguard
A417CL	OEM	fleetguard
SAKUR A724	OEM	fleetguard
AC535	OEM	fleetguard
FF147 AC ADG479	GUD	fleetguard
AF-2222	OEM	fleetguard
AF26152 HAST AF-2771	MICRO	fleetguard
CFM CFM608	OEM	fleetguard
FA-648	OEM	fleetguard
FENGY FK-751	OEM	fleetguard
FMA535	OEM	fleetguard
FILT G10-9086	OEM	fleetguard
AF874 RYCO HDA5335	RYCO	fleetguard
MAHLE LA-608	OEM	fleetguard
LBRF LAF-9086	OEM	fleetguard
LBRF LAF9086XL	OEM	fleetguard
DON P11-3179	OEM	fleetguard
DON P11-7435	OEM	fleetguard
DON P11-7580	OEM	fleetguard
DON P11-9235	DON	fleetguard
AF4078 DON P13-1333	DON	fleetguard
DON P13-8133	OEM	fleetguard
SA10371	OEM	fleetguard

About This Cross Reference Page

This page is designed to help you move from a part number to a verified shortlist. We combine OEM references, equivalent filter matches, and related pages so you can compare options faster without losing the original application context.

If you are sourcing for maintenance, fleet purchasing, or overseas supply, use the OEM list and related replacements together. That approach is safer than choosing a substitute based only on a similar-looking part number.

Frequently Asked Questions

Which OEM part numbers does AF421M replace?

AF421M replaces OEM part numbers such as ATLAS 11565, ATCO 11565, and HAST 11565 plus 33 additional OEM numbers. Use the cross-reference table to review the supported original equipment numbers.

Which brands are associated with AF421M?

AF421M is connected to 7 brands in our records, including OEM, I-R, MICRO, and GUD and 3 more brands. Use those references as a starting point, then verify the application before buying.

How should I verify a Fleetguard replacement for AF421M?

Before replacing AF421M, verify the application, dimensions, thread or seal style, and service requirements against your current filter. Cross-reference data should narrow the shortlist, but final fitment should always be confirmed on the equipment side.

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