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Exhaust Manifolds & Risers

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  • 1" Stainless "Y" Style Fitting

    Hardin Marine

    1" Stainless "Y" Style Fitting

    These all stainless steel "Y" style water divider fittings are commonly used when plumbing 4-port thermostat housing down to 2 hoses for water outlet to the exhaust manifold connection.

    $99.99
  • Stainless Steel 18MM Oxygen Sensor Plug Stainless Steel 18MM Oxygen Sensor Plug Stainless Steel 18MM Oxygen Sensor Plug

    Hardin Marine

    Stainless Steel 18MM Oxygen Sensor Plug

    Stainless Steel 18MM Oxygen Sensor PlugThis plug only is designed fit popular O2 bungs and ports designed to allow you to cap/plug a oxygen sensor bung Price does not include bung only plug. Sold Each. 18mm x 1.5

    $23.95
  • O2 Spacer, Stock Mercury Riser Wet Joint

    Hardin Marine

    O2 Spacer, Stock Mercury Riser Wet Joint

    O2 Spacer, Stock Mercury RiserThis Unique 1" thick adapter plate provides an installation option for retro fitting a Oxygen sensor and or air fuel ratio gauge for tuning purposes Into Mercruiser's most common Wet Joint style exhaust manifold systems. The...

    $105.99
  • Seaward O2 Wedge / Gauge Kit Seaward O2 Wedge / Gauge Kit Seaward O2 Wedge / Gauge Kit

    Hardin Marine

    Seaward O2 Wedge / Gauge Kit

    Seaward O2 Wedge / Gauge Kit Gauge kit includes custom tuned .1 AFR Resolution Bosch LSU 4.9 Sensor, 8ft. wiring harness, 304 stainless steel weld-in bung, mounting hardware, and detailed instructions for installation 0-5v data and serial data...

    $409.99
  • Seaward O2 Oxygen Sensor Adapter Flange Seaward O2 Oxygen Sensor Adapter Flange Seaward O2 Oxygen Sensor Adapter Flange

    Hardin Marine

    Seaward O2 Oxygen Sensor Adapter Flange

    Whether you're a tuner seeking to add a popular Air/Fuel ratio gauge or you're entering the world of aftermarket fuel injection we have developed the critical part to make this addition a snap. This billet aluminum anodized wedge is at just the perfect...

    $99.99
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Michigan Motorz is pleased to offer products manufactured by BARR Marine - "The Strongest IRON in the Business!" - a pioneer in the marine aftermarket exhaust business since 1933. Barr Marine's "industry first" 3-year warranty set the standard for all others to meet. Don't be fooled by companies who outsource their product line and say their quality is superior. Barr exhaust systems are CNC machined at their facility and molded from their own tooling by carefully selected foundries across the U.S. Michigan Motorz customers deserve the best money can buy and you'll sleep better knowing your engine has been installed with an exhaust system manufactured by BARR Marine.