Hypercoils 8" Tall Coil-Over Spring - 2-1/4" I.D. - 375 lb. 91501 Thread-in 3/8" NPT probeDerale has

Thread-in 3/8" NPT probeDerale has been the leader in performance cooling for decades

Aramid Fiber

Vehicle Applications: 1970-1974 Dodge Challenger Base CID 318 Naturally Aspirated GAS

undercut stems

Provides hands-free engine cranking when adjusting valves

Hypercoils 8" Tall Coil-Over Spring - 2-1/4" I.D. - 375 lb. 91501 Thread-in 3/8" NPT probeDerale hasHypercoils are manufactured from the highest quality chrome silicone steel and high tensile chrome silicone steel available in the world. The material used in producing Hypercoils undergoes two separate magnaflux inspections. Once before manufacture and again after coiling. These inspections insure the wire is free from surface imperfections which, if gone undetected could lead to spring failure. The life of a suspension coil is directly related to