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 56947J-74K 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
- Sleeve
- Inner Boost Valve
- Outer Boost Valve
APPLICATIONS
Explorer 2002-2003 V6 4.0L; V8 4.6L 5 Spd RWD 4X4
Explorer, Sport Trac 2004-2007 V6 4.0L 5 Spd RWD 4X4
Explorer, Sport Trac 2004-2005 V8 4.6L 5 Spd RWD 4X4
Mustang 2005-2007 V6 4.0L: V8 4.6L 5 Spd RWD
Thunderbird 2002 V8 3.9L 5 Spd RWD
Thunderbird 2003-2005 V8 3.9L 5 Spd RWD
S Type 2002 V6 3.0L; V8 4.0L 5 Spd RWD
XK8 2002 V8 4.0L 5 Spd RWD
XKR, XKR 100 2002 V8 4.0L 5 Spd RWD
Aviator 2003-2005 V8 4.6L 5 Spd RWD 4X4
LS 2002 V6 3.0L; V8 3.9L 5 Spd RWD
LS 2003-2006 V6 3.0L; V8 3.9L 5 Spd RWD
Mountaineer 2002-2003 V6 4.0L; V8 4.6L 5 Spd RWD 4X4
Mountaineer 2004-2007 V6 4.0L 5 Spd RWD 4X4