4L80E 4L85E TRANSMISSION: SONNAX O-RING STYLE BOOST VALVE & SLEEVE KIT FITS '91-'08

SKU:
S34507RDK
Condition:
New
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$45.95
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4L80E  
4L85E
'91-'08 4-SPEED AUTOMATIC TRANSMISSION WITH 17 BOLT PAN:
BOOST VALVE & SLEEVE KIT
  • O-RING STYLE
  • INCLUDES O-RINGS
  • SONNAX 34200-01K

s34507rdk-sonnax-34200-01k.jpg

  • FITS THESE 4L80E & 4L85E EQUIPPED CHEVY, GMC, & HUMMER MODELS:
  • AVALANCHE 02-06 4 SP RWD/4X4 V8 8.1L
  • C/K PICK-UP 1500-2500 95-99 4 SP RWD/4X4 V8 5.0L/5.7L/6.0L/7.4L/6.5L DIESEL
  • C/K,SILVERADO/SIERRA PICK-UP, 1500, 00-03 4 SP RWD/4X4 V8 6.0L
  • C/K,SILVERADO/SIERRA PICK-UP, 2500, 00-03 4 SP RWD/4X4 V8 5.7L/6.0L/7.4L/8.1L/6.5 DIESEL
  • C/K PICK-UP 3500 95 4 SP RWD/4X4 V8 5.7L
  • C/K,SILVERADO/SIERRA PICK-UP 3500 95-03 4 SP RWD/4X4 V8 5.0L/5.7L/6.0L/7.4L/8.1L/6.5L DIESEL
  • H1 HUMMER 93-05 4 SP 4X4 V8 5.7L, 6.5L DIESEL
  • SILVERADO 1500HD/1500SS/SIERRA DENALI 04-05 4 SP RWD/4X4 V8 6.0L
  • SILVERADO/SIERRA 2500/2500HD/3500 04-07 4 SP RWD/4X4 V8 6.0L
  • SUBURBAN 1500-2500 95 4 SP RWD/4X4 V8 7.4L/6.5L DIESEL
  • SUBURBAN 1500 96-99 4 SP RWD/4X4 V8 6.5L DIESEL
  • SUBURBAN 1500 06-07 4 SP RWD/4X4 V8 6.0L
  • SUBURBAN 2500 96-07 4 SP RWD/4X4 V8 5.7L/6.0L/7.4L/8.1L/6.5L DIESEL
  • TAHOE/YUKON 95-03 4 SP RWD/4X4 V8 6.0L/8.1L/6.5L DIESEL
  • 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!
  • WE SHIP WORLD WIDE
FITS 4L80E 4L85E:
'91-'08