Precision Filtration for Allison 1000 Transmissions​
This ​dual-filter kit​ delivers ​OEM-grade protection​ for ​2001-2010 GM trucks​ equipped with the ​6.6L Duramax engine​ and ​Allison 1000 transmission.
​Technical Specifications​
​Internal Filter (29537965)​: ​Steel-backed cellulose media​ with ​30-micron retention​
​External Filter (29539579)​: ​Spin-on design​ with ​silicone anti-drainback valve​
​Pressure Range: ​45-75 PSI​ operating pressure
​Temperature Tolerance: ​​-20°F to 275°F (-29°C to 135°C)​​
​Compatibility Validation​
​Certified fitment for:
​2001-2010 6.6L Duramax 2500/3500​ with ​1000/M74 Transmission​ with ​shallow pan​
​Pan Requirement: ​Factory shallow pans only​ (does not fit deep aftermarket pans)
​Performance Advantages​
​Targeted Contaminant Control​
​Internal filter prevents valve body clogging​ during ​high-torque towing​
​External filter maintains fluid flow​ during ​cold-start viscosity spikes​
​Maintenance Efficiency​
​Reusable pan gasket​ reduces waste and service costs
​Spin-on filter enables 10-minute external replacements