High Capacity 6 Inch Replacement Transmission Filter Kit - Heavy Duty

In this review of the High Capacity 6 Inch Replacement Transmission Filter Kit, the bottom line is simple: this kit is for technicians and fleet owners who need a direct, reliable replacement for Allison 3000 and 4000 series transmissions. The reviewer found the kit notable for its complete contents and OEM-compatible fit, which makes a routine transmission service straightforward. Built to ISO standards and made in USA, the kit promises durability and fluid compatibility that matter most when addressing heavy-use, vocational vehicles.

Key Features

• Direct interchange: Comes compatible with FLEETGUARD P/N HF28943 so the filter fits Allison 3000-4000 transmissions in the same form and function.
• Complete kit: Includes two filters plus all required gaskets and o-rings so a full filter change can be completed without sourcing additional parts.
• High capacity media: The glass product media and Beta ratio of 200/20.7 deliver improved particle retention for longer fluid life under heavy duty conditions.
• ISO-built quality: Manufactured to several ISO specifications for dirt capacity, flow fatigue and fluid compatibility, which supports consistent performance across service intervals.
• Made in USA: Domestic production with strict quality control reduces the risk of manufacturing defects and supports parts traceability.

Who It's For

This kit is aimed at fleet maintenance shops, owner-operators, and mechanics who service Allison 3000 and 4000 transmissions and want an OEM-compatible replacement that includes everything for a complete change. It is best for heavy duty trucks and vocational equipment that benefit from a higher capacity filter and attention to contamination control.

Customers who need a one-off, non-Allison application or who require a different micron rating should look elsewhere, since this kit is specified for transmissions compatible with the HF28943 interchange and a 20 micron performance target.

Pros & Cons

Pros

• Direct replacement compatibility reduces fitment guesswork and installation time.
• Two filters plus gaskets and o-rings provide a full service solution in one purchase.
• Manufactured to ISO standards and made in USA for reliable quality control.

Cons

• Micron rating and Beta ratio are fixed to this media type, so users needing a different filtration level must choose another product.

Specifications

Our Verdict

The High Capacity 6 Inch Replacement Transmission Filter Kit is a sensible choice for anyone servicing Allison 3000-4000 transmissions who wants a complete, OEM-compatible kit built to ISO standards. It delivers good value through included gaskets and o-rings, proven filter media and domestic manufacture, making it well suited to fleet and heavy duty service environments.

Frequently Asked Questions

Is this kit a direct replacement for Fleetguard HF28943?
Yes, the kit is compatible in fit, form and function with FLEETGUARD P/N HF28943.

How many filters are included?
The kit includes two filters plus all required gaskets and o-rings for a complete change.

What fluids is the filter compatible with?
The filter is specified for HH, HL, HM and HV fluid types and is manufactured to relevant ISO specifications for fluid compatibility.