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Sonnax 5L40-E 5L50-E Transmission Boost Valve Kit 55209-04K

Sonnax 5L40-E 5L50-E Transmission Boost Valve Kit 55209-04K

by Sonnax
SKU S144507RAK
$41.73 - $41.73
$41.73
$41.73 - $41.73
$41.73
Availability:
in stock, ready to be shipped

Delivery time

You will receive your package in 2–5 business days within the contiguous U.S.

Manufacturer Part Number: 55209-04K

Brand: Sonnax

Fitment Type: Performance/Custom

5L40-E, 5L50-E

Boost Valve Kit
Part No. 55209-04K

OE ratio with .474" & .441" dia. valve spools.

Vehicles with GM 5L40-E and 5L50-E transmissions are prone to poor line rise or high Reverse pressure problems causing poor shift quality and clutch failure due to leakage at the boost valve assembly. Sonnax offers two boost valve kits: the 55209-01K performance ratio (higher line rise and firmer shifts) and the OE ratio 55209-04K for factory performance.

  • Hardcoat anodized aluminum valves combat premature wear
  • Boost sleeves are made from alloy aluminum specifically designed to resist wear
  • Increased performance ratio 55209-01K or OE ratio 55209-04K assemblies are available
  • Valve
  • Sleeve
  • O-Ring
  • Dia.: 0.474"
  • Dia.: 0.441"

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