These 4-1 Long Tube Headers are designed specifically for a Jet Boat application with a Big Block Chevy engine. Headers feature ports for optional water injection system. These headers are designed to allow the exhaust gasses to flow more freely from each 4 cylinder bank and combine in a more efficient manner. Tubing has been optimized for the 396, 402, 427 and 454 engines.
Package Included:
1 x Set of Header Exhaust System, Gasket(s) and Bolt(s)
Compatible with:
Big Block Chevy 496 MAG BBC V-Drive Jet Boat
  • Made of high quality steel with 2-pieces 4-1 (8-2-1) direct bolt-on design
  • TIG welded CNC machine flange
  • O2 sensor bung insertion / Metal gasket included / Water injection ports above transom headers
  • Increase high flow air, instantly gain 10 to 15 Hp. / Tq
  • Application: Please check part finder on top of the page (Professional Installer is Highly Recommended) (No Instruction Included)

Big Block BBC Jet Boat 2pcs Stainless Steel Water Injected Racing Exhaust Header Manifold

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