Cylinder Heads
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Manley Extreme Duty 8mm x 1.560 L83 5.3L Exhaust Valves 12363-8
MANLEY
$489.59Manley Extreme Duty 8mm x 1.560 L83 5.3L Exhaust Valves Stainless 12363-8 EXTREME DUTY SERIES Top Fuel, Funny Car and Marine Engine Exhaust Valves More Hot Hardness and High Temperature Strength than any competitive offerings Chrome Stems and Hard...12363-8$489.59 -
Manley Severe Duty 8mm x 1.930 L83 5.3L Intake Valves Stainless 12358-8
MANLEY
$296.64Manley Severe Duty 8mm x 1.930 L83 5.3L Intake Valves Stainless 12358-8 The Severe Duty® series of valves is the Manley signature in the performance and racing industry. Exhaust material XH-428 and intake material NK-844 is offered by no competitor...12358-8$296.64 -
Manley Severe Duty 8mm x 1.560 L83 5.3L Exhaust Valves Stainless 12361-8
MANLEY
$286.72Manley Severe Duty 8mm x 1.560 L83 5.3L Exhaust Valves Stainless 12361-8 The Severe Duty® series of valves is the Manley signature in the performance and racing industry. Exhaust material XH-428 and intake material NK-844 is offered by no competitor...12361-8$286.72 -
Manley Race Series 8mm x 1.930 L83 5.3L Intake Valves Stainless 12356-8
MANLEY
$179.69Manley Race Series 8mm x 1.930 L83 5.3L Intake Valves Stainless 12356-8 Manley is known as one of the leading manufacturers of Racing Valves in the world. Manley Racer Series Stainless Steel Valves were engineered for Street Performance and Racing...12356-8$179.69 -
Manley Race Series 8mm x 1.560 L83 5.3L Exhaust Valves Stainless 12359-8
MANLEY
$179.69Manley Race Series 8mm x 1.560 L83 5.3L Exhaust Valves Stainless 12359-8 Manley is known as one of the leading manufacturers of Racing Valves in the world. Manley Racer Series Stainless Steel Valves were engineered for Street Performance and Racing...12359-8$179.69 -
Chevrolet Performance CNC LS3 Aluminum Cylinder Head Assembly w/ Inconel Exhaust Valves 19301699
CHEVROLET PERFORMANCE
$1,117.54Chevrolet Performance CNC LS3 Aluminum Cylinder Head Assembly w/ Inconel Exhaust Valves 19301699 Heads are sold individually.19301699$1,117.54 -
Chevrolet Performance Gen V L83 5.3L MLS 5-Layer Head Gasket 12622325
CHEVROLET PERFORMANCE
$75.85Chevrolet Performance Gen V L83 5.3L MLS 5-Layer Head Gasket 12622325 3.835" (97.4mm) bore x .052" (1.33mm) thickness x 5-layer MLS.12622325$75.85 -
Manley Titanium 8mm x 2.205 LS7 Intake Valves w/ CrN Seat Coating 11958BC-8
MANLEY
$1,427.90Manley Titanium 8mm x 2.205 LS7 Intake Valves w/ CrN Seat Coating 11958BC-8 These valves have an O.E. style single radius keeper groove. “C” suffix indicates CrN seat coating Use Manley valve lock P/N 13098-16 (7°) or 13153-16...11958BC-8$1,427.90 -
Chevrolet Performance Coolant Crossover Pipe 12694769
CHEVROLET PERFORMANCE
$68.99Chevrolet Performance Coolant Crossover Pipe 12694769 Front cylinder head steam bleed tube. Includes O-rings in the fittings that bolt to the heads.12694769$68.99 -
Chevrolet Performance Steam Crossover Bolt 11588714
CHEVROLET PERFORMANCE
$6.99Chevrolet Performance Steam Crossover Bolt 11588714 6mm x 1.0 x 1.181" UHL11588714$6.99 -
Chevrolet Performance Coolant Air Bleed Plug 12602540
CHEVROLET PERFORMANCE
$25.79Chevrolet Performance Coolant Air Bleed Plug 1260254012602540$25.79 -
Chevrolet Performance GM Gen V LT1/L86 6.2L MLS 5-Layer Head Gasket 12688943
CHEVROLET PERFORMANCE
$89.95Chevrolet Performance GM Gen V LT1/L86 6.2L MLS 5-Layer Head Gasket 12688943 4.0944" (104mm) bore x .0523" (1.33mm) thickness x 5-layer MLS.12688943$89.95