VAN FULL SIZE 2500 96-03 4 SP RWD V6 4.3L V8 4.8L/5.7L/6.0L/8.1L 6.5L DIESEL
VAN FULL SIZE 2500 04-08 4SP RWD/AWD V8 6.0L
VAN FULL SIZE 2500 06-08 4 SP RWD V8 6.6L DIESEL
VAN FULL SIZE 3500 95-03 4 SP RWD V6 4.3L V8 4.8L/5.7L/6.0L/7.4L/8.1L/6.5L
VAN FULL SIZE 3500 04-08 4 SP RWD V8 4.8L/6.0L
VAN FULL SIZE 3500 06-08 4 SP RWD V8 6.6L DIESEL
YUKON 2500 04-06 4 SP RWD/4X4 V8 6.0L
YUKON 2500 04-06 4 SP RWD/4X4 V8 8.1L
YUKON 2500 07 4 SP RWD 4X4 V8 6.0L
FITS THESE 4L80E BENTLEY & ROLLS ROYCE MODELS:
BENTLEY ARNAGE '02-'06
ROLLS ROYCE ARNAGE / SILVER SERAPH '00-'03 6.8L
Hardened steel boost valve has over 20% wider spools to provide better durability and increased sealing contact area.
Boost valve spools have annular grooves to reduce side loading that causes wear.
Quality steel boost sleeve with external o-rings provides positive seal to compensate for pump cover bore wear.
Kit includes a replacement aluminum balance oil plug with an o-ring to ensure proper sealing and adequate back pressure on the pressure regulator valve.
Kit includes instructions to retrofit parts dating back to 1989.
Common problems in vehicles with a 4L80-E transmission are uncontrollable line rise (upward of 500-600 psi), high line pressure in reverse, buzzing noise, broken direct clutch drums and/or broken cases. These problems are usually caused by reverse boost oil that enters the torque signal circuit due to a wear-created cross leak at the sleeve. High line pressure and buzz is created by oil leakage past the aluminum balance plug. The Sonnax replacement assembly 34200-01K eliminates these problems.
SONNAX 34200-01K
O-RING STYLE SLEEVE
INSTALLATION INSTRUCTIONS INCLUDED
PHOTO SHOWS ACTUAL SONNAX BOOST VALVE & SLEEVE KIT
FREE SHIPPING TO ALL 50 U.S. STATES & PUERTO RICO!
