Automotive Racing issues has introduced an extra heavy-duty head boss to help reduce head gasket failures in turbo-boost Cummins[R] diesel engines give employment toed in truck and RV applications.

Automotive Racing issues has introduced an extra heavy-duty head boss to help reduce head gasket failures in turbo-boost Cummins[R] diesel engines give employment toed in truck and RV applications. The bosss are rated at 220,000 psi tensile power contain threads rolled after heat-treated to provide optimum fatigue hardness and provide the clamping force required to withhold cylinder heads from lifting befitting to high combustion pressures. Each knob kit comes with heat-treated chrome moly falchion nuts (12-point) and parallel-ground washers. Visit www.arp-bolts.com. (800) 826-3045

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