The Industrial Injection Duramax 130lb we recommend this valve spring kit for engines that are pushing over 45psi boost and/or 3200rpm. This performance valve spring kit will help prevent valve float, there for allowing your truck to run more efficiently and make more power safely. This comes as a complete kit with conical valve springs, billet steel retainers, chromoly spring seats and valve locks to provide the best durability and reliability to your valve train.

Features:

• Helps Prevent Valve Float
• Rated up to 130psi Boost/Drive Pressure
• Rated up to 5000rpm
• 32 Conical Valve Springs
• 32 Billet Steel Retainers
• 32 Chromoly Spring Seats
• 64 Valve Locks
• Fits 2001-2016 LB7, LLY, LBZ. LMM, LML 6.6L Duramax Engines