If you have an aftermarket deep pan such as the PPE, Allison Stamped Steel, Mag-Hytec Deep Pan or a Kodiak or Top Kick with the Allison 1000 transmission this filter is the replacement for your application. The Allison internal filters were redesigned recently and have new part numbers.
This filter will work with the Sun Coast filter lock. This is the old style filter part #29537965
Order a Sun Coast Filter Lock to insure your deep pan filter will not slide down causing cavitation or slide out completely causing complete transmission failure. The Sun Coast deep filter lock is cheap insurance for a $15,000 transmission in your $50,000 dollar truck.