Street Sport Industries High Performance Valve Springs For GM GMC Hummer Truck 2001?2019 6.6L V8 32V Duramax LB7 LLY LBZ ? Chrome Silicon Alloy Valve Springs ? OEM 52-4041, 97225124, 98025825 ?162pcs

• BUILT FOR ENDURING POWER AND PERFORMANCE: Designed for 6.6L Duramax engines, these high-performance valve springs deliver stable valve control under boost, load, and extended RPM ? giving you the confidence to push harder while keeping your engine smooth and protected.
• FORGED FROM ADVANCED ALLOY MATERIALS: Constructed from premium Chrome Silicon or Alpha1/3 alloy, each spring resists heat, stress, and distortion ? ensuring consistent tension and precision performance for both intake and exhaust valves.
• PRECISION SHOT PEENED AND HEAT TREATED: Each spring is meticulously shot-peened and heat-treated to relieve stress, improve fatigue life, and maintain pressure consistency even under extreme diesel operating conditions.
• OEM REPLACEMENT CONFIDENCE: Direct interchange for part numbers 52-4041, 53-404-100, 97225124, 98025825, and 8972129940, ensuring perfect fitment for 2001?2019 GM, GMC, and Hummer 6.6L Duramax engines (LB7, LLY, LBZ).
• COMPLETE 16-VALVE SET FOR TOTAL BALANCE: Includes sixteen (16) valve springs sized at 1.23? OD x 0.89? ID, providing equal tension across all valves for optimized airflow, combustion, and overall engine harmony.

Valve Springs from Street Sport Industries are precision-engineered for 2001?2019 GM, GMC, and Hummer trucks equipped with the 6.6L V8 32-Valve Duramax LB7, LLY, and LBZ engines. Designed as a direct replacement for part numbers 52-4041, 53-404-100, 97225124, 98025825, and 8972129940, this set of high-performance valve springs ensures balanced valve control and improved reliability under high load, boost, and RPM conditions. Each spring is crafted from premium Chrome Silicon or Alpha1/3 alloy, shot-peened, and heat-treated to deliver exceptional strength, fatigue resistance, and stable pressure through continuous operation. Suitable for both intake and exhaust valves, these springs maintain factory geometry while providing a refined performance upgrade for towing, racing, or daily use. With Street Sport Industries, you can count on precision-built components that honor your truck?s power, protect its performance, and keep it running strong for years to come.