Fel-Pro 1643 is a performance valve cover gasket set for Ford-family 429 and 460 big-block V8 engines used across Ford, Lincoln, and Mercury platforms. The Cork-Lam cork-rubber construction with a steel core helps control leaks on demanding builds, especially where high vacuum, blowout forces, or less-than-perfect sealing surfaces can make ordinary gaskets struggle.

Fel-Pro 1643 Features:

• Cork-Lam cork-rubber material is chemically and mechanically bonded to both sides of a steel core for a stable sealing surface.
• .313 in. thickness gives the gasket extra body for torque retention and can add valve cover clearance around valvetrain components.
• Designed for Big Block Ford 429 and 460 applications, including 429 OHV Wedge, 429CJ, 429SCJ, 460, and 460 OHV Wedge engines.
• Performance-grade construction is suited to racing and repair environments where high vacuum or blowout conditions may be a concern.
• Engineered for aftermarket service work, with materials intended to help seal imperfect surfaces found during real-world repairs.

Includes:

• Pair of valve cover gaskets

Use this gasket set when servicing valve covers on 429 or 460 big-block builds that need a thicker, steel-core cork-rubber gasket for better stability under clamp load.

Fits Ford, Lincoln, and Mercury applications equipped with 429 or 460 V8 engines within the supported 1968-1987 coverage. Not intended for use on emission-controlled vehicles.