COMP Cams 4747-1 Valve Spring Seat / Spring Locator

The COMP Cams 4747-1 is a precision-machined valve spring seat (spring locator) designed to properly locate and support valve springs in performance and racing engine builds. Standard shims and OEM-style seats are no match for the extreme spring pressures and elevated RPM demands of today's high-performance engines — the COMP Cams 4747-1 provides a durable, reliable solution built to last.

Key Features:

• Constructed from hardened steel alloy for superior resistance to extreme spring pressures and high RPM
• Precision machined in-house to tight tolerances for consistent thickness and accurate inside/outside diameters
• Seats and locates the valve spring correctly, preventing movement and ensuring valvetrain stability
• Protects cylinder heads — especially critical on aluminum heads where direct spring contact can cause wear and damage
• Available individually (single unit) for targeted replacement or custom builds
• Compatible with both factory and aftermarket cylinder head dimensions
• Eliminates the need to stack multiple shims for installed height correction

COMP Cams valve spring seats are a trusted upgrade for enthusiasts and engine builders looking to maximize valvetrain reliability. Whether you're building a street performance engine or an all-out race motor, the 4747-1 delivers the precision fit and durability required for consistent, long-lasting performance.