Why are these spring seats better than standard shims for high-RPM engines?

Standard shims can't handle the extreme spring pressures and high RPMs found in race engines. These hardened steel seats are designed to locate and hold the spring securely, preventing issues that shims alone can't manage.

What is the advantage of the 'ID locator' design?

The ID locator design has the locating shoulder on the inside. This means it centers the spring and holds it in place without requiring extensive machining of the cylinder head, which was often necessary with older outer-cup designs.

What specific COMP Cams valve springs are these seats compatible with?

These spring seats are designed to work well with COMP Cams' 932, 935, and 26094 dual valve springs.

COMP Cams Valve Spring Seats 4773-16 | Hardened Steel

Name: COMP Cams ID Spring Seats 1.5 X 630 X
Brand: COMP Cams
SKU: comp-cams-comp-cams-id-spring-seats-1-5-x-630-x-t14-4392430
Price: 70.34 USD
Availability: BackOrder

COMP Cams ID Spring Seats 1.5 X 630 X

$70.34

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

COMP Cams ID Spring Seats 1.5 X 630 X. Hardened steel seats protect heads and locate springs in high-RPM engines.

Key Features

Set of 16 ID Spring Seats.
Made from hardened steel alloy for durability.
Features an inboard locating shoulder to center the spring.
Protects the cylinder head and shim from spring pressure.
1.540-inch outer diameter and .640-inch inner diameter.
.060-inch thickness.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

COMP Cams is a well-known name when it comes to performance valvetrain parts, and these ID Spring Seats are a great example of their practical solutions. If you're building a race engine that's going to see high RPMs, standard shims just won't cut it under the extreme spring pressures involved. These valve spring locators offer a simple yet effective fix.

They're made from a hardened steel alloy, which means they're built to last under tough conditions. The design protects both the cylinder head and the shim underneath, while also ensuring the spring stays centered and securely in place. Unlike older designs that required machining the head to fit an outer retaining cup, COMP Cams now offers an ID locator. This means the locating shoulder is on the inside, making installation more straightforward.

This particular set features a 1.540-inch outer diameter and a .640-inch inner diameter, with a .060-inch thickness. They work well with COMP Cams' 932, 935, and 26094 dual valve springs, making them a solid choice for many performance builds.