💨 Unleash Big Block Power & Ride the Wave of Performance!
This Chevy Big Block Jet Boat Water Inject Exhaust Header Kit is a premium, direct bolt-on 2-piece 4-1 header system designed specifically for Big Block Chevy V8 engines (396, 402, 427, 454). Featuring TIG welded CNC flanges, O2 sensor bung, and water injection ports, it boosts horsepower by 10-15 HP while enhancing exhaust flow and cooling. Crafted from high-quality steel, it’s built to endure marine conditions and elevate your jet boat’s performance.
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