Mr. Gasket Headlock Locking Header Bolts - 3/8-16 x 3/4 Inch - Set of 12 - 2230G downpipes 63/6 L 1961 - 1962

63/6 L 1961 - 1962 Mercury Monterey   3

Year Make Model Submodel Engine Size 1966 - 1968 Ford Bronco 289/4

2 L L4 1972 - 1973 Jeep Commando 258/4

including the timing cover

Mr. Gasket Headlock Locking Header Bolts - 3/8-16 x 3/4 Inch - Set of 12 - 2230G downpipes 63/6 L 1961 - 1962Overview: Headlock Bolts eliminate the need for lock washers, Period. That's because each Headlock Bolt features 24 equally spaced, stainless steel teeth serrations that bite into and hold onto the attaching surface eliminating the need for lock washers. Features: 12 per Package Includes a ball head hex key socket installation tool that makes it easy to get them started 410 stainless steel Minimum 180,000 PSI tensile strength 24 equally spaced