52-4049 | QualFast High Performance Springs for Cummins 12V Diesel

QualFast High Performance Springs are manufactured by the industry-leading high performance valve spring factory using the latest materials and manufacturing processes. All QualFast springs are wound using super-clean chrome silicon or new Alpha 1 or 3 alloy wires. Engineered for high performance to give optimum lift and prevent valve float.

Specs

• OD : 1.344"
• ID : 0.945"
• Closed Load : 178 @ 1.800"
• Open Load : 250 @ 1.380"
• Spring Type : Single
• Coil Bind : 1.250"