TH700-R4, 4L60

.471" Dia., O-Ring Style

Symptoms:

• Soft slide shifts
• 3-4 Clutch burned
• Reduced band life

Cause:
MTV boost loss and insufficient line rise.

Correction:
Sonnax TV boost valve kits prevent oil loss between the outside diameter of the TV sleeve and the pump body.

A common problem in GM 200-4R and 4L60 transmissions is burned bands and/or 3-4 clutches. This failure can be reduced by eliminating throttle boost oil leakage. The Sonnax TV boost valve kits with .423" dia., with .471" dia. and with .500" dia. eliminate these problems for a variety of applications. For higher line pressure for towing and off-road, use this Sonnax TV boost valve kit.

• Throttle valve boost valve and sleeve are made from made from hardened steel for better wear resistance
• O-Rings on sleeve separate throttle pressure and Reverse boost circuits, providing additional protection against cross-leaks
• O-Rings prevent loss of oil between the outside diameter of the throttle valve sleeve and pump body

Contents:

• Valve
• Sleeve .471" Dia.
• O-Rings (2)

SONNAX Installation Instructions