Keep your Allison transmission running clean with this professional-grade spin-on filter. Fits Allison 1000, 2000, and 2400 series transmissions, including GMC 2500HD models from 2000 onward. This is a high-quality aftermarket filter—not AC Delco—but built to OE specs for reliable performance. Part numbers cross-reference to 37712, 29539579, 29531007, and 121013. Made by Raybestos/Allomatic, it's designed for easy installation and efficient filtration. Helps extend transmission life by trapping contaminants. Perfect for DIY fluid changes or shop use. Note: Country of manufacture is unknown, but the filter meets industry standards. Works as a direct replacement for OEM filters. No modifications needed—just spin off the old, spin on the new. Great for maintenance schedules or after a rebuild. Keeps your Allison shifting smoothly. A must-have for truck owners who want to protect their transmission without paying dealer prices. UPC does not apply.
