TV Boost Valve Kit - .471" Bore Dia., O-Ring Style
77917-471
4L60, 200-4R
Pricing:
$30.98
Description
.471" Bore Dia., O-Ring Style
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 [77917-01K] (.423" dia.), 77917-471 (.471" dia.) and 77917-500 (500" dia.) eliminate these problems for a variety of applications. For higher line pressure for towing and off-road, use Sonnax TV boost valve kit 77917-471.
- 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
- Drop-in Zip Valve™ parts install quickly and easily
| Sonnax Part No. | Sleeve Dia. | Performance Application |
|---|---|---|
| [77917-01K] | .423" dia. | Minimum line pressure for V8 applications |
| 77917-471 | .471" dia. | Higher line pressure for towing and off-road |
| 77917-500 | .500" dia | Maximum line pressure & shift feel for high performance applications |
- Valve
- Sleeve .471" Dia.
- O-Rings (2)
Symptoms:
- Soft slide shifts
- 3-4 Clutch burned
- Reduced band life
Cause:
MTV boost loss and insufficient line rise.Correction:
Sonnax drop-in TV boost valve kits prevent oil loss between the outside diameter of the TV sleeve and the pump body.Details
Shipping Information
- Item Requires Shipping
- 2.0 lbs.
- W4.0000” x H4.0000” x L4.0000”
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