4L60-E Sonnax has developed a drop-in replacement 2-3 shift valve. The factory valve applies the overrun clutch for D3, 1st, 2nd and 3rd gears only to D3 and 3rd gears. Adds durability to the input spray and forward clutch on heavy-duty vehicles by applying the first and second overrun clutches. L, plow trucks and high performance applications. Additionally, this upgrade works well with applications that use aftermarket electronic paddle shifters. With overrun. No special tools required. Extends the life of the forward clutch and input. Ideal for electrically downshifted units with aftermarket paddles.

Heavy duty 2-3 shift valve. 4L60-E Sonnax has developed a drop-in replacement 2-3 shift valve that applies D3, 1st, 2nd and 3rd gear overrun clutches. Applying overrun clutches on first and second provides additional durability to input sprags and forward clutches in heavy duty vehicles, plow trucks, and high performance applications. Additionally, this upgrade works well with applications that use aftermarket electronic paddle shifters. When the overrun clutch is engaged, the Sonnax valve allows a second full downshift engine brake, and the shift remains in the D3 position. No special tools required. Extends the life of the forward clutch and input spray. Ideal for electric downshift units with aftermarket paddle shifters.


Manufacturer: ‎Sonnax
Brand: ‎Sonnax
Product size: ‎14.73 x 10.67 x 1.27 cm; 0.28 g
Manufacturer reference: ‎77754-41
Genuine Product number: 77754-41
Product dimensions: Depth x Width x Height: 14.7 x 10.7 x 1.3 cm
Product weight: 0.28 g