12-Pt Head Stainless Intake Manifold Bolts for Ford 351W, uses 3/8 wrenching

12-Pt Head Stainless Intake Manifold Bolts for Ford 351W, uses 3/8 wrenchingPrevent intake manifold leaks with ARPs quality fasteners. Theyre nominally rated at 180,000 psi and precision machined for optimum thread engagement. Wide underhead flange and companion washers provide even load distribution. Precision rolled threads prevent galling while promoting more consistent torque loading. Facilitates optimum sealing of gasket surfaces. Available in choice of black oxide finish chrome moly or corrosion resistant stainless

so that’s why ARP came up with these super tough bolts

self-locking nuts

Secure any engine with complete confidence with ARP’s rugged motor mount bolts

Our special purpose washers are constructed from either premium chrome moly with a black oxide finish or polished ARP stainless steel and are hardened and parallel-ground

PROFESSIONAL SERIESAll Pro Series bolts are cold-forged to ensure molecular integrity

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Material 2: Custom Age 625+

Rated at 180

has been applied

One of the most critical – yet often overlooked – fasteners used in any engine locks the timing in place

It has approximately 200% the fatigue life of 8740 chrome moly steel and has a tensile strength of 220

They’re made from premium grade aerospace chrome moly and centerless ground to precise diameter