Schoenfeld Slip-Together Reducer - 4" to 3-1/2" Diameter Remote Oil Filter Mount while providing superior thermal insulation

while providing superior thermal insulation and protection against vibration and noise

1972-1989 Buick Electra

GM Converter to Small Block Ford Crank

2014-2015 Infiniti QX70

See 4810-1 for a single guide plate

Schoenfeld Slip-Together Reducer - 4" to 3-1/2" Diameter Remote Oil Filter Mount while providing superior thermal insulationAllows easy fabrication of exhaust system and muffler installation. 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, exhaust reducers, header gaskets,