Manley Valve Lock/Keeper, LOC-CAPTIVE .3415 - 13031-16

Manley Performance Valve Locks are precision-machined to securely retain the valve spring retainer to the valve stem, ensuring accurate valvetrain geometry and dependable performance. Available for...

Manley Valve Lock/Keeper, LOC-TI S7 7mm -.050 B/L - 13030T-8

Manley Performance Valve Locks are precision-machined to securely retain the valve spring retainer to the valve stem, ensuring accurate valvetrain geometry and dependable performance. Available for...

Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.594in O/A Length, 0.3110in Stem - 12898-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive...

Manley Chevrolet Big Block Intake Valve Kit - 2.350in Head Dia. 5.594in O/A Length, 0.3110in Stem - 12880-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive...

Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.594in O/A Length, 0.3110in Stem - 12878-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive...

Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3110in Stem - 12856H-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive...

Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3110in Stem - 12856-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive...

Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3110in Stem - 12850H-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive...

Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3110in Stem - 12850-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive...

Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3110in Stem - 12842-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive...

Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.494in O/A Length, 0.3110in Stem - 12838-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive...

Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive...