Sonnax 5L40-E 5L50-E Transmission Boost Valve Kit 55209-04K Featured Products 46RE / 47RE / 48RE

46RE / 47RE / 48RE A518 Model Automatic Transmission

Bolt-On Anchor Plate

Forward Clutch Hub Front Washer

Manufacturer Part Number: 04-263

98mm) Intermediate "E" Shaft Journal

Sonnax 5L40-E 5L50-E Transmission Boost Valve Kit 55209-04K Featured Products 46RE / 47RE / 48REManufacturer 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