Why do I need spring seats for a performance engine?

Standard shims can't handle the high spring pressures and RPMs found in race engines. These hardened steel seats protect your cylinder head and shim while ensuring the valve spring stays properly located and held in place.

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

The 'ID' or inboard locating shoulder is on the inside of the seat. This design helps center the seat and hold the spring securely, and it avoids the need for extensive machining on the cylinder head that older 'cup' style locators might require.

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

These 4785-16 spring seats have a 1.550" OD and a 0.570" ID. They are designed to work well with COMP Cams' 917, 919, and 943 dual valve springs.

COMP Cams Valve Spring Seats 4785-16

Name: COMP Cams ID Spring Seats 1.55 X 570 X
Brand: COMP Cams
SKU: comp-cams-comp-cams-id-spring-seats-1-55-x-570-x-t14-4392466
Price: 72.19 USD
Availability: BackOrder

COMP Cams ID Spring Seats 1.55 X 570 X

$72.19

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 1.55 X 570 X. Protects your head and shim while locating and holding the valve spring in place.

Key Features

Fits COMP Cams 917, 919, and 943 dual valve springs.
Made from hardened steel alloy for durability.
Features an inboard locating shoulder to center the seat and hold the spring.
Protects the cylinder head and shim from spring pressure.
1.550" outer diameter and 0.570" inner diameter.
Set includes 16 spring seats.

⚠️ 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

Secure CheckoutFast Shipping631-982-0042

Product Details

If you're building a performance engine that's going to see high RPMs, you know that standard shims just won't cut it. They can't handle the extreme spring pressures and the constant stress. That's where these ID Spring Seats from COMP Cams come in. They're a simple but really effective way to make sure your valve springs stay put and your cylinder heads are protected.

These aren't just simple washers; they're made from a hardened steel alloy. This tough material is designed to withstand the forces involved in high-performance engines. The unique inboard locating shoulder helps center the seat perfectly and keeps the spring seated correctly, preventing any unwanted movement. This design also protects both the cylinder head surface and the shim underneath from the spring's pressure.

This particular set, the 4785-16, features a 1.550-inch outer diameter and a 0.570-inch inner diameter. They're a great match for COMP Cams' popular 917, 919, and 943 dual valve springs, ensuring a solid setup for your build.