Doc's Diesel Transmission Filter Kit DF-370 - Reliable OEM Fit

In this review of the Doc's Diesel Transmission Filter Kit DF-370 the bottom line is straightforward: this kit is for owners of Ram 6.7L Cummins HO 3500, 4500 and 5500 trucks with the AISIN AS69RC transmission who want an affordable, reliable replacement that mirrors OEM fit and function. The reviewer found the kit traps debris effectively and helps keep the torque converter and fluid pump protected, which translates to smoother shifting and lower risk of costly transmission repairs when maintenance intervals are observed.

Key Features

• Direct Fit Compatibility: Designed to fit Ram 6.7L Cummins HO 3500, 4500 and 5500 models with AISIN AS69RC transmissions from 2013-2025 for straightforward installation.
• OEM Interchange: Replaces Mopar part numbers 68224232AA and 68214914AA so it matches expected dimensions and sealing for dependable performance.
• Debris Filtration: Traps dirt and metal particles to reduce wear on the torque converter and fluid pump, which helps extend transmission life.
• Heat and Wear Reduction: By keeping fluid cleaner the filter contributes to lower operating temperatures and reduced internal wear over time.
• Maintenance Guidance: The manufacturer recommends changing transmission filters every 25,000-50,000 miles (60,000 miles maximum) to maintain optimal performance and warranty compliance.
• Aftermarket Quality: Made by Docs Diesel, a company focused on filters engineered to meet or exceed OEM standards for durability and value.

Who It's For

This kit is best for owners and fleet managers who run Ram 3500/4500/5500 trucks with the 6.7L Cummins HO and AISIN AS69RC transmission and who prefer a cost-effective aftermarket replacement that adheres to OEM interchange numbers. It suits DIY mechanics who perform scheduled transmission service and want a part that fits without modification.

Those who should look elsewhere are owners of trucks without the AISIN AS69RC transmission or anyone requiring a transmission filter kit with additional specialty components not listed in the product interchange. Also consider dealer or factory parts if you require manufacturer-supplied packaging or dealer-specific warranties.

Pros & Cons

Pros

• Fits the specified Ram 6.7L Cummins HO models precisely, making installation straightforward.
• Matches Mopar interchange numbers, easing verification and compatibility concerns.
• Customers report good quality and fit, indicating reliable aftermarket performance.
• Helps reduce internal wear and heat by keeping transmission fluid cleaner.

Cons

• Replacement guidance is general; washers or seals specific to some service procedures may still be sourced separately.
• Not intended for transmissions outside the listed AISIN AS69RC fitment range.

Specifications

Product	Transmission Filter Kit DF-370
Fitment	Ram 6.7L Cummins HO 3500, 4500, 5500 with AISIN AS69RC 2013-2025
Interchange	Replaces Mopar 68224232AA, 68214914AA
Recommended Change Interval	Every 25,000-50,000 miles; 60,000 miles maximum
Brand	Docs Diesel
Primary Benefit	Reduces debris, wear, and heat in the transmission

Our Verdict

The Doc's Diesel DF-370 is a practical, value-oriented transmission filter kit for Ram 6.7L Cummins HO trucks with the AISIN AS69RC transmission. It replaces the corresponding Mopar numbers and delivers the fit and filtration most owners need to keep shifts consistent and reduce long-term wear, making it a smart choice for routine maintenance when following recommended service intervals.

Frequently Asked Questions

Will this kit fit my Ram 6.7L Cummins?
It fits Ram 3500, 4500, 5500 models with the AISIN AS69RC transmission from 2013-2025; verify your transmission code before purchasing.

Does it replace original Mopar parts?
Yes, the DF-370 is listed as an interchange for Mopar 68224232AA and 68214914AA.

How often should the transmission filter be changed?
Docs Diesel recommends every 25,000-50,000 miles with a 60,000 mile maximum, and to follow any manufacturer warranty requirements.