Why do I need these spring seats instead of just shims?

Standard shims can deform or fail under the extreme spring pressures found in high-RPM race engines. These hardened steel seats protect both the cylinder head and the shim, while also providing a stable location for the spring.

What valve springs are these ID Spring Seats compatible with?

These specific locators (part 4786) have a 1.635" OD and .570" ID. They are designed to work well with COMP Cams 959 dual springs and 947, 948, 26082, and 26028 triple valve springs.

What material are these spring seats made from?

They are made from a hardened steel alloy, which provides the necessary strength and durability to withstand high spring pressures and repeated valve operation.

COMP Cams Valve Spring Seats 4786-16

Name: COMP Cams ID Spring Seats 1.635 X 570 X
Brand: COMP Cams
SKU: comp-cams-comp-cams-id-spring-seats-1-635-x-570-x-t14-4392469
Price: 70.34 USD
Availability: BackOrder

COMP Cams ID Spring Seats 1.635 X 570 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 1.635 X 570 X. Protects heads and shims from extreme spring pressures.

Key Features

Set of 16 ID Spring Seats.
Hardened steel alloy construction protects cylinder heads and shims.
Internal shoulder centers and holds the valve spring securely.
1.635 inch outer diameter.
0.570 inch inner diameter.
Designed to work with popular COMP Cams dual and triple valve springs.

⚠️ 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 well-known for performance valvetrain components, and these ID Spring Seats are a prime example of their practical solutions for demanding engines. If you're building a race engine or pushing your current setup to higher RPMs, you know that standard shims can struggle under extreme spring pressures. These valve spring locators offer a simple yet effective way to protect your cylinder head and the shim itself, while also ensuring the spring stays properly seated and centered.

What makes these different is the design. Unlike older styles that required significant machining to fit a cup on the outside, COMP Cams designed these with an internal locating shoulder and spring cup. They're made from hardened steel, which gives them the strength to handle high spring loads without deforming. The 1.635-inch outer diameter and 0.570-inch inner diameter are specifically chosen to work well with many popular COMP Cams dual and triple valve springs, like their 959 dual springs and 947, 948, 26082, and 26028 triple valve springs.