Street Sport Industries 60# High RPM Valve Springs For Cummins 5.9L 6BT 12V 1989?1998 ? Upgraded Chrome Silicon Valve Springs For Exhaust & Intake ? Interchange 3916691 ? Set Of 12

• BUILT TO PROTECT POWER AND PERFORMANCE: These 60# high-RPM valve springs deliver stronger valve control and improved sealing, keeping your Cummins running smooth and safe under heavy boost, towing, or spirited driving.
• PREMIUM CHROME-SILICON CONSTRUCTION: Made from high-tensile chrome-silicon wire for unmatched strength, heat resistance, and long-term durability ? built to handle the demands of high-boost diesel engines.
• SHOT-PEENED FOR LASTING RELIABILITY: Each spring is shot-peened to relieve internal stress and prevent fatigue, ensuring steady spring pressure and consistent performance through years of use.
• OEM-SPEC REPLACEMENT FOR PERFECT FIT: Direct interchange for part number 3916691, designed to fit 1989?1998 Cummins 5.9L 12-Valve 6BT engines with factory geometry ? no modification needed for installation.
• COMPLETE SET OF 12 FOR BALANCED CONTROL: Includes twelve (12) valve springs for both intake and exhaust valves, providing even tension and synchronized operation across every cylinder.

Valve Springs from Street Sport Industries, with interchange part number 3916691, are precision-engineered for 1989?1998 Dodge Ram trucks equipped with the 5.9L 12-Valve Cummins 6BT engine. These 60# high-RPM valve springs deliver enhanced seat pressure and valve stability to prevent float, ensuring smoother operation and reliable sealing under boost or heavy load. Built from premium chrome-silicon wire and shot-peened for superior fatigue resistance, they maintain consistent performance even under extreme temperature and vibration. Designed to OEM specifications for a direct-fit installation, this set of 12 provides balanced valve control for both intake and exhaust, making it an ideal upgrade for performance, towing, and longevity. With Street Sport Industries, you get trusted strength, precision engineering, and the confidence to keep your Cummins performing at its peak.