4L60E 4L65E TRANSMISSION BOOST VALVE & SLEEVE KIT FITS '93-'05 .470" DIA. WITH O-RINGS EARLY PUMP BY SONNAX

SKU:
S74507FA
Condition:
New
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$38.88 $34.77
$49.99
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4L60E
4L65E
4L70E
'93-'05 4-SPEED AUTOMATIC TRANSMISSION (WITH 16-BOLT PAN):
BOOST VALVE & SLEEVE KIT WITH O-RINGS
  • .470" Diameter
  • FOR EARLY PUMP
  • SONNAX 77898E-4K
  • Sonnax valve and sleeve kits restore hydraulic integrity and prevent leakage.
s74507fa-77898e-4k.jpg
  • INCLUDES BOOST VALVE & SLEEVE, & O-RINGS
  • ALUMINUM CONSTRUCTION

WE'LL LET THE GUYS FROM SONNAX EXPLAIN:

Vehicles with a 4L60-E transmission frequently have poor line rise, which can result in 3-4 clutch, 2-4 band failure or poor shift quality. The duty cycle of the EPC solenoid causes the boost sleeve to wear quickly. Oil entering the torque signal orifice, leaks past the boost valve and exhausts at the reverse orifice. Oil enters the torque signal orifice, leaks past the boost valve, and exhausts through the reverse orifice, resulting in poor line rise. Reverse oil can exhaust both to the sump and back through the torque signal orifice.
The boost valves have been specially hard coated to eliminate excessive wear from occurring on the inside diameter of the sleeves. These boost sleeves have been manufactured from high quality aluminum, specifically designed to resist wear.

  • PHOTO SHOWS ACTUAL REVERSE BOOST VALVE ASSEMBLY
  • MADE IN THE USA
  • SONNAX # 77898E-4K
  • FREE SHIPPING TO ALL 50 U.S. STATES & PUERTO RICO!
  • WE SHIP WORLD WIDE