SonnaxBoost Valve Kit

Ford vehicles equipped with 5R55W and 5R55S transmissions frequently exhibit problems such as poor line rise, erratic line pressure, delayed engagement, no Reverse, poor shift quality and burnt clutches. These troubles can often be traced to wear in the OE boost sleeve, which allows pressure escape that causes driveability concerns. Installing Sonnax boost valve kit S46741FK eliminates pressure loss and revives line rise and shift quality in all ranges. Sleeve manufactured from highly wear-resistant aluminum; Hardcoat anodized aluminum valves combat premature wear; Drop-in Zip Valve™ parts install quickly and easily

Boost Valve Kit; Boost