2020up 10L1000 GM Silverado HD Transmission Oil Pan Upgrade Aluminum 2500 3500
2020up 10L1000 GM Silverado HD Transmission Oil Pan Upgrade Aluminum 2500 3500
E256269865064
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GM Allison 10L1000 Durability Upgrade Package
Includes Deep Transmission Pan, Filter, OE Bonded Pan Gasket, and Ratiotek Valve Body Tuner Kit
Fits:
2020–Current Chevrolet Silverado 2500 HD & 3500 HD pickups
2020–Current GMC Sierra 2500 HD & 3500 HD pickups
2020–Current Chevrolet Silverado 3500 HD chassis cabs
2020–Current GMC Sierra 3500 HD chassis cabs
Kit Includes:
- PPE Deep Aluminum Transmission Pan (#128051400)
- Bonded Aluminum Pan Gasket
- OE-spec Filter Assembly
- RatioTek Valve Body Tuner Kit (Increases torque capacity)
Features:
- Increases fluid capacity by 4 quarts to lower transmission fluid temperature
- Thick cast A356.0 T6 aluminum alloy construction
- External fins (.75") and internal heat sinks (.75" & 1.2") for improved heat dissipation
- Neodymium magnet-equipped 304 stainless steel drain plug with Viton O-ring
- 9/16" ORB magnetic plug seals fluid level check port
- 1/8" NPT port for optional fluid temperature sensor
- External gussets for added flange support
- Compatible with OEM gasket (included)
- Limited lifetime warranty
The Allison 10L1000 continues its legacy of durability. This upgrade package enhances performance and protection with a deep PPE pan that increases fluid capacity by a full gallon. Engineered fins and heat sinks improve thermal management, while powerful magnets remove harmful metal particles.
Valve Body Tuner Kit Includes:
- Pressure Regulator Spring
- High Feed Limit Valve Springs (Inner & Outer)
- Low Feed Limit Valve Springs (Inner & Outer)
- Lube Control Valve Spring
- LPC Regulator Valve, Steel Ball & Spring
- Patented EPC Regulator Valve System
- Pump Pressure Spring Shim
- Two Drill Bits
This professional-level kit increases torque capacity and installs from the bottom—no transmission removal required.




