Vehicles with AXOD, AXODE, AX4S or AX4N transmissions frequently have flare 1-2 & 2-3 upshifts, high pressure, harsh Reverse (300 psi), 2-1 downshift clunk, non-adjustable throttle pressure and clutch or band failure from poor line rise. This is caused by wear on the inside bore of the boost sleeve allowing TV/EPC and/or Reverse oil to either leak to exhaust or cross-leak. Sonnax offers boost valve kits for both 3.0 and 3.8 liter applications and sleeves with or without O-rings (factory style) to eliminate the above problems.

Sleeves are made from high-quality aluminum to prevent wear
Hardcoat anodized aluminum valve combats premature wear
O-ring sleeves prevent leakage between the sleeve and valve body bore
Available in two sizes: 96201-12K (O-ring style) and 96201-13K (factory style) with a small diameter boost valve of .475"; 96201-01K (O-ring style) and 96201-08K (factory style) with a small diameter boost valve of .491"
Drop-in Zip Valve™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

More From This Category

MANLEY Valve Spring Locator, Inside, Heat-Treated, Fits 1.255 in. OD. Spring, .577 in. ID, 1.24 in. OD, .18 in. Thick, Black, Each

MANLEY Valve Spring Locator, Inside, Heat-Treated, Fits 1.255 in. OD. Spring, .577 in. ID, 1.24 in. OD, .18 in. Thick, Black, Each

$11.77

COMP Cams Spring Seat and Seal Kit for 5.3/6.0L LS

COMP Cams Spring Seat and Seal Kit for 5.3/6.0L LS

$51.14

MANLEY Valve Lock, Super 7 Degree Captiv Loc, Conventional, Steel, .3415 in. Stem, Super, Set of 16

MANLEY Valve Lock, Super 7 Degree Captiv Loc, Conventional, Steel, .3415 in. Stem, Super, Set of 16

$278.55

Crow Cams 4 CYL.SINGLE SPRING (SET OF 8)

Crow Cams 4 CYL.SINGLE SPRING (SET OF 8)

$115.37

COMP Cams Engine Valve Spring Seat, ID Spring Locator, 1.550 in. OD, .570 in. ID, .060 in. Thick, Each

COMP Cams Engine Valve Spring Seat, ID Spring Locator, 1.550 in. OD, .570 in. ID, .060 in. Thick, Each

$9.94

COMP Cams Valve Spring Kit, Beehive Springs, Steel Retainers, Locks, Seals, Kit

COMP Cams Valve Spring Kit, Beehive Springs, Steel Retainers, Locks, Seals, Kit

$936.36