This part is a Genuine Allison replacement part. If you have a GMC/Chevy Truck equipped with the Allison 6 speed transmission this filter is the OEM replacement for your application. The Allison internal filters were redesigned recently and have new part numbers. The Allison Part Number (Old) 29537965 (New) 29542833* will fit all Allison 1000 6 speed transmissions in the GMC/Chevy Duramax Diesel pick-up truck with the factory shallow sump pan.
Order a Sun Coast Filter Lock to insure your internal filter will not slide down causing cavitation or slide out completely causing complete transmission failure. The Sun Coast shallow filter lock is cheap insurance for a $15,000.00 transmission in your $50,000 dollar truck.