Engine Components

Idler Pulley-Smooth SC LT4 GM Engine 90mm

• Genuine Holley Quality Parts

ID Spring Locator - 1.253" OD, .780" ID, .120" Thickness

The old standard shims will not hold up to the extreme spring pressures and high RPM in today's race engines.

ID Spring Locator - 1.300" OD, .520" ID, .060" Thickness

The old standard shims will not hold up to the extreme spring pressures and high RPM in today's race engines.

ID Spring Locator - 1.300" OD, .520" ID, .060" Thickness

The old standard shims will not hold up to the extreme spring pressures and high RPM found in racing engines being built today.

ID Spring Locator - 1.300" OD, .570" ID, .060" Thickness

The old standard shims will not hold up to the extreme spring pressures and high RPM in today's race engines.

ID Spring Locator - 1.350" OD, .515" ID, .050" Thickness

The old standard shims will not hold up to the extreme spring pressures and high RPM found in racing engines being built today.

ID Spring Locator - 1.510" OD, .630" ID, .060" Thickness

The old standard shims will not hold up to the extreme spring pressures and high RPM in today's race engines.

ID Spring Locator - 1.540" OD, .520" ID, .060" Thickness

ID Spring Locator - 1.540" OD, .570" ID, .060" Thickness

Made from hardened steel, this locator uses an inboard locating shoulder to center the seat and hold the spring in place.

ID Spring Locator - 1.550" OD, .570" ID, .060" Thickness

The old standard shims will not hold up to the extreme spring pressures and high RPM in today's race engines.

ID Spring Locator - 1.550" OD, .570" ID, .060" Thickness

The old standard shims will not hold up to the extreme spring pressures and high RPM in today's race engines.

ID Spring Locator Set of 100 - 1.300" OD, .570" ID, .060" Thickness

The older style standard shims will not hold up to the extreme spring pressures and high RPM found in racing engines being built today.

ID Spring Locator Set of 100 - 1.550" OD, .570" ID, .060" Thick

The older style standard shims will not hold up to the extreme spring pressures and high RPM found in racing engines being built today.

ID Spring Locator Set of 100 - 1.550" OD, .570" ID, .060" Thick

The older style standard shims will not hold up to the extreme spring pressures and high RPM found in racing engines being built today.

ID Spring Locator Set of 12 - 1.300" OD, .570" ID, .060" Thickness

ID Spring Locator - 1.300" OD, .570" ID, .060" Thickness, .875" Spring ID - Set of 12

ID Spring Locator Set of 16 - 1.100" OD, .470" ID, .060" Thickness

The old standard shims will not hold up to the extreme spring pressures and high RPM in today's race engines.

ID Spring Locator Set of 16 - 1.300" OD, .505" ID, .040" Thickness

Complete Set of (16) ID Spring Locators.

ID Spring Locator Set of 16 - 1.300" OD, .510" ID, .060" Thickness

ID Spring Locator Set of 16 - 1.340" OD, .570" ID, .100" Thickness

The old standard shims will not hold up to the extreme spring pressures and high RPM in today's race engines.

ID Spring Locator Set of 16 - 1.400" OD, .520" ID, .060" Thickness

The old standard shims will not hold up to the extreme spring pressures and high RPM in today's race engines.

ID Spring Locator Set of 16 - 1.420" OD, .570" ID, .060" Thickness

ID Spring Locator Set of 16 - 1.540" OD, .570" ID, .060" Thickness

ID Spring Locator Set of 16 - 1.540" OD, .640" ID, .060" Thickness

ID Spring Locator Set of 32 - 1.080" OD, .440" ID, .045" Thickness

ID Spring Locator Set of 4 - 1.500" OD, .585" ID, .060" Thick

The old standard shims will not hold up to the extreme spring pressures and high RPM in today's race engines.