Briggs 25-40HP Big Block OEM Valve Springs | Built for Surface Drive & Mud Motor Power –

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Briggs Big Block Factory Valve Spring (25HP–40HP) Keep your engine running strong with this factory valve spring designed specifically for Briggs Big Block engines ranging from 25H P to 40HP. Built to meet or exceed OEM standards, this spring provides the reliable valve control and consistent pressure your engine needs for peak performance. Whether you’re rebuilding your mud motor, replacing worn parts, or doing preventative maintenance, this factory spring ensures proper valve operation at all RPM ranges. Its durable construction helps maintain correct valve timing, improves longevity, and prevents float under high load — essential for heavy-duty mud motor applications. At Mud Motor Central, we specialize in performance and reliability for outdoor enthusiasts who expect their engines to handle tough environments. This valve spring is an ideal direct replacement for stock Briggs Big Block setups, giving you confidence on the water or in the field. Features: Fits Briggs Big Block 25HP–40HP engines Factory OEM-grade material and compression rate Ensures reliable valve seating and performance Prevents valve float under high RPM Perfect for stock rebuilds or replacement maintenance Upgrade or replace with confidence — backed by Mud Motor Central’s commitment to quality and customer support. Show more