Engines and Components› Camshafts and Valvetrain

COMP Cams

COMP Cams ID Spring Seats Eb 1.55 X 630 - Set of 100

$307.95

SKU: C007 4777-100

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INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 4777-100

The older style standard shims will not hold up to the extreme spring pressures and high RPM found in racing engines being built today. COMP Cams offers a simple but effective solution to this problem - a thin, hardened steel alloy seat which will not only protect the head and shim but also locate and hold the spring in place. Previously, this part has been available only in a cup form with the retaining portion being on the outside of the part. This required that the head be machined a great deal to accept this cup so COMP now offers an I.D. locator with the locating shoulder on the inside, as well as the spring cup. Many sizes are available to locate from the inside or outside diameter.

4777-100 - ID Spring Seats, EB 1.55 X 630 X 790

MIA's Description

These ID Spring Seats are designed to protect the cylinder head and shims, while also precisely locating and securing the valve spring. They are made from a thin, hardened steel alloy to withstand extreme spring pressures and high RPMs in racing engines. Unlike older cup-style locators that required extensive head machining, these ID locators have the locating shoulder on the inside, simplifying installation. They are available in various sizes to accommodate different inside or outside diameter spring fitments.

Fitment

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Specifications

BrandCOMP Cams
Part NumberC007 4777-100

Videos

Checking Valve Spring Install Height & Seat Diameter

Checking Valve Spring Install Height & Seat Diameter
COMP Cams® Quick Tech: LS Spring Compressor Tool

COMP Cams® Quick Tech: LS Spring Compressor Tool

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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