ARP 150-7401 Thermostat Housing Bolt Kit for FORD 351W. 8740. 12pt ymm_17 which gives them about 1000%

which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice)

this high-quality stainless-steel downpipe has the catalytic converters removed

Metric Washer Kit

sandblasted high-grade titanium muffler

ARP 150-7401 Thermostat Housing Bolt Kit for FORD 351W. 8740. 12pt ymm_17 which gives them about 1000%Available in a variety of sizes to suit your needs, all ARP 12 point nuts are constructed from 8740 chrome moly steel or ARP 300 Series stainless steel material, and meet ARPs highest standards of quality. Rated at 180, 000 psi tensile strength, ARP 12 point nuts are manufactured in thick wall versions for optimum strength and rigidity and thin wall versions for applications with limited space requirements. All 8740 chrome moly steel nuts are black