Schoenfeld Header Bolts - 3/8" x 3/4" x 5/16" - Hex Head (14 Pack) H88602CB3XS 1-3/4" diameter tubing

1-3/4" diameter tubing

Housing is 5/8" smaller in diameter than stock Ford distributors

Dual AUX Port

2003-2005 Mazda Miata

R3500 Pickup

Schoenfeld Header Bolts - 3/8" x 3/4" x 5/16" - Hex Head (14 Pack) H88602CB3XS 1-3/4" diameter tubingProduct Description: Header Bolt 3 8 16 in Thread 0. 75 in Long 5 16 in Hex Head Steel Set of 14 Started in 1974, Schoenfeld is known for custom fabricated headers for all forms of circle track racing. Schoenfeld Headers is the worlds largest manufacturer of circle track headers, but they specialize in a variety of high quality exhaust parts, including turn downs, extensions, tubing bends and elbows, race mufflers, insert mufflers, mandrel bends,