Rocker Arm Spacers and Shims

Ford Performance Parts Rocker Arm Pedestal Shim Kits

Have you ever had problems adjusting rocker arms on your car? Kiss those problems goodbye with these rocker arm shim kits from Ford Performance Parts. They are to be used with all bolt-down style roller rocker arms to obtain correct lifter preload. These kits include 16 or 32 shims in various thicknesses to achieve the correct lifter preload needed.

4.8 out of 5 stars ( 66 )

$25.99

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$35.99

Jesel Rocker Arm Shims

Jesel offers rocker arm shaft shims in a variety of applications, including many Chevrolet small and big block engines from 1955 and up. The spacers come in a kit with various thicknesses. They're color-coded steel so you can distinguish the size needed for your application. These accessories assist in mounting your rocker stand assemblies. Order the shims recommended for your year, make, and engine family.

4.0 out of 5 stars ( 7 )

$34.00

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$70.50

Scorpion Rocker Arm Shims

Scorpion performance offers these rocker arm shims to correct the excessive lifter preload sometimes encountered due to cam changes and valve jobs. These shims are designed for use with Scorpion rocker arms to obtain correct lifter preload for your application.

4.88 out of 5 stars ( 16 )

$30.99

PRW Rocker Arm Shims

PRW rocker arm shims are available for your Chevy, Ford, and Mopar setups. Each kit includes several shims in three different thicknesses to gain the ideal fit for your rockers. Choose the set created for your vehicle.

5.0 out of 5 stars ( 5 )

$0.52

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$43.87

Harland Sharp Rocker Arm Shaft Spacers

Harland Sharp offers rocker arm shaft spacers for a variety of applications, including many Ford, Mercury, Chrysler, Dodge, and Plymouth engines from the 1950s, '60s, '70s, '80s, and '90s. Machined from aluminum or steel, these components are used in engine valvetrains to adjust the alignment of the rocker arm roller tip on the valve stem. They're placed on the rocker arm shaft to shim the rocker arm assembly, ensuring the roller rolls in the center of the valve tip and improving valve alignment. This alignment is critical for engine efficiency and prevents premature wear, especially at higher RPMs. Additional details: * Shims are used to push the rocker arm assembly sideways on the shaft * Centering the roller prevents it from walking off the end of the valve, which can cause parts to break * The shims are primarily used in engines with shaft-mounted rocker arms, especially for high performance applications where engine stress is higher * Various thicknesses and inner diameters are available to fit different engine specifications

3.75 out of 5 stars ( 4 )

$12.99

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$15.99

PRW Rocker Arm Shaft Spacers

PRW rocker arm shaft spacers (and shims) are precision-machined valvetrain components used with shaft-mount rocker arm systems to adjust stand height, align the rocker roller tip centrally on the valve stem, and establish correct lifter preload or valve geometry. These steel spacers are available in multiple thicknesses. They're available for a variety of applications, including select Chrysler, Dodge, and Plymouth Mopar engines from the 1960s, '70s, '80s, and '90s. Additional details: * Geometry alignment: Spacers ensure the rocker pad or roller tip stays properly centered on the valve stem across various engine block and cylinder head combinations * Height adjustment: They allow engine builders to tweak the installed height of the rocker shaft stands (using specific baseline measurements) to correct pushrod length discrepancies and achieve precise lifter pre-load/valve lash * Construction: Engineered to maintain high rigidity under high-RPM valve spring loads

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$3.10

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$5.26