OE/OEM Numbers: Manufacturer Part Number 77754-41, designed for GM 4L60-E, 4L65-E, and 4L70-E transmission systems
Fitment: Compatible with Hummer H2/H3 (2004-2010), Chevrolet Avalanche/Camaro/Corvette (1991-2009), GMC Sierra/Silverado (1995-2011), and other models with V6/V8 engines (see full list in specs)
Function: Restores overrun clutch application in D3 1st-3rd gears to enhance input sprag and forward clutch durability, addressing OEM torque capacity limitations
Material & Design: Heavy-duty construction by Sonnax, engineered to withstand high-stress conditions and improve transmission performance longevity
Package Include: 1 x 2-3 Shift Valve. Direct replacement for factory units; recommended for transmissions needing improved durability in D3 operation