Allison External Spin On Filter - 29539579 Multipack (Pack of 2)

The Allison External Spin On Filter - 29539579 is a must-have for maintaining my RV’s Allison 1000/2000/2400 series transmission! This genuine OEM filter, designed for 2001–2019 GM 6.6L Duramax trucks and other vehicles with Allison transmissions, ensures optimal fluid cleanliness to protect the valve body circuits. Made with high-quality materials, it traps dirt and debris effectively, keeping my transmission running smoothly. I installed it on my Chevy Silverado 2500HD, and the spin-on design made replacement a breeze—less than 10 minutes with a filter wrench, losing only about a pint of fluid. The filter’s fit is perfect, with no leaks, and it’s recommended to change after the initial 5,000 miles and every 12,000–25,000 miles thereafter, per Allison’s guidelines. I reused the existing magnet (cleaned thoroughly, as it’s not always included), which captures metal particles, adding an extra layer of protection. The black finish (a recent change from red) looks sleek and matches OEM specs perfectly. My only minor note is to ensure a tight seal (one full turn after gasket contact, as per Allison’s manual) to avoid under-tightening, but a good filter wrench makes this easy. Priced around $15–$25 for a single pack, it’s a cost-effective choice compared to dealership prices or aftermarket alternatives like Wix, offering superior reliability. For RVers or truck owners prioritizing transmission longevity, this Allison filter is a fantastic investment! Highly recommend!

Good product and arrived fast

Great price for allison filter. Dont waste your time buying the knockoff filters.

Worked good and didn't leak if not turned too tight. Appears to be legit factory filter, so I'm happy with it after installing about 5 months ago.

Why did you pick this product vs others?: OEM part perfect fit and function

Good fit, purchased before. Wish this was available for a better price. This was the best price found, but it's much more than oil filters

Shipping was fast and price was good for 2 filters.

Fit 2014 gmc sierra 6.6 diesel perfectly