Marine Exhaust Manifolds
- Barr Marine®Exhaust Block-Off Plate for GM EnginesExhaust Block-Off Plate for GM Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$19.67 - $20.99
- Barr Marine®Exhaust Manifold Gasket Kit for Chrysler EnginesExhaust Manifold Gasket Kit for Chrysler Engines by Barr Marine®. Manifold to cylinder head gasket set, (1) required per engine. Will fit both manifold styles. This product is made of high-quality materials to serve you for years to...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$22.17
- Barr Marine®Exhaust Manifold Kit for Chris Craft EnginesExhaust Manifold Kit for Chris Craft Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$341.52 - $419.46
- Barr Marine®Exhaust Manifold Kit for Crusader EnginesExhaust Manifold Kit for Crusader Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$419.46 - $536.44
- Barr Marine®Exhaust Manifold Kit for GM EnginesExhaust Manifold Kit for GM Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$341.52 - $536.44
- Barr Marine®Exhaust Manifold Kit for Indmar EnginesExhaust Manifold Kit for Indmar Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$341.52 - $419.46
- Barr Marine®Exhaust Manifold Kit for Interceptor EnginesExhaust Manifold Kit for Interceptor Engines by Barr Marine®. Water cooled center discharge manifold to fit the small block Ford engine (3/4" N.P.T. cooling hose connections). All years. This product is made of high-quality materials to...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$375.23
- Barr Marine®Exhaust Manifold Kit for MerCruiser EnginesExhaust Manifold Kit for MerCruiser Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$341.52 - $801.10
- Barr Marine®Exhaust Manifold Kit for OMC EnginesExhaust Manifold Kit for OMC Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$341.52 - $614.13
- Barr Marine®Exhaust Manifold Kit for Volvo Penta EnginesExhaust Manifold Kit for Volvo Penta Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$341.52 - $537.45
- GLM®Conversion Kit for MerCruiser EnginesConversion Kit for MerCruiser Engines by GLM®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$1,313.41
- GLM®Conversion Kit for OMC EnginesConversion Kit for OMC Engines by GLM®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$1,715.96
- GLM®Exhaust Manifold Kit for Ford EnginesExhaust Manifold Kit for Ford Engines by GLM®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$304.12 - $401.81
- GLM®Exhaust Manifold Kit for MerCruiser EnginesExhaust Manifold Kit for MerCruiser Engines by GLM®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$308.48
- GLM®Exhaust Manifold Kit for OMC EnginesExhaust Manifold Kit for OMC Engines by GLM®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$401.81
- GLM®Exhaust Manifold Kit for Volvo Penta EnginesExhaust Manifold Kit for Volvo Penta Engines by GLM®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$304.12
- GLM®Exhaust Manifold Mounting Kit for GM EnginesExhaust Manifold Mounting Kit for GM Engines by GLM®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$18.22 - $28.90
- GLM®Exhaust Manifold for MerCruiser EnginesExhaust Manifold for MerCruiser Engines by GLM®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$209.63 - $294.71
- Quality Mark®Exhaust Manifold for GM EnginesExhaust Manifold for GM Engines by Quality Mark®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$421.47
- Barr Marine®Cast Iron Exhaust Block Off Plate Adaptor for Chris Craft EnginesCast Iron Exhaust Block Off Plate Adaptor for Chris Craft Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...High quality at an affordable priceExpertly made from premium materials$30.02
- Barr Marine®Cast Iron Exhaust Block Off Plate Adaptor for Crusader EnginesCast Iron Exhaust Block Off Plate Adaptor for Crusader Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...High quality at an affordable priceExpertly made from premium materials$30.02
- Barr Marine®Cast Iron Exhaust Block Off Plate Adaptor for Flagship EnginesCast Iron Exhaust Block Off Plate Adaptor for Flagship Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...High quality at an affordable priceExpertly made from premium materials$30.02
- Barr Marine®Cast Iron Exhaust Block Off Plate Adaptor for Indmar EnginesCast Iron Exhaust Block Off Plate Adaptor for Indmar Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...High quality at an affordable priceExpertly made from premium materials$30.02
- Barr Marine®Cast Iron Exhaust Block Off Plate Adaptor for Interceptor EnginesCast Iron Exhaust Block Off Plate Adaptor for Interceptor Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...High quality at an affordable priceExpertly made from premium materials$30.02
- Barr Marine®Cast Iron Exhaust Block Off Plate Adaptor for MerCruiser EnginesCast Iron Exhaust Block Off Plate Adaptor for MerCruiser Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...High quality at an affordable priceExpertly made from premium materials$30.02
- Barr Marine®Cast Iron Exhaust Block Off Plate Adaptor for OMC EnginesCast Iron Exhaust Block Off Plate Adaptor for OMC Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...High quality at an affordable priceExpertly made from premium materials$30.02
- Barr Marine®Cast Iron Exhaust Block Off Plate Adaptor for Pleasurecraft EnginesCast Iron Exhaust Block Off Plate Adaptor for Pleasurecraft Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind....High quality at an affordable priceExpertly made from premium materials$30.02
- Barr Marine®Cast Iron Exhaust Block Off Plate Adaptor for Volvo Penta EnginesCast Iron Exhaust Block Off Plate Adaptor for Volvo Penta Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...High quality at an affordable priceExpertly made from premium materials$30.02
- Barr Marine®Cast Iron Exhaust Block Off Plate Adaptor for Waukesha EnginesCast Iron Exhaust Block Off Plate Adaptor for Waukesha Engines by Barr Marine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...High quality at an affordable priceExpertly made from premium materials$30.02
- Barr Marine®Cast Iron Exhaust Block-Off Plate for Chrysler EnginesCast Iron Exhaust Block-Off Plate for Chrysler Engines by Barr Marine®. Front end plate with 1/2" N.P.T. water connection. For use where water connection is made from the front of the manifold. (1) required per manifold. Will fit both...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$60.25
Marine exhaust manifolds are often perceived as something that lasts the lifetime of a boat, but in reality, they are more like expendable items that may need to be replaced once in a few years. If your boat is equipped with an enclosed engine cooling system that utilizes fresh water and coolant instead of raw water, or if your boat sees light use in freshwater, you can expect your manifold to last for decades. But extreme use in saltwater environments may put an end to this part in as little as three years.
A manifold is water-jacketed for cooling purposes. It has a double-walled construction, with hot exhaust gases flowing within the inner wall. The outer wall surrounding it is filled with water. Over time, the inner wall develops a leak due to corrosion. Water could make its way into the engine and cause irreparable damage. A good rule of thumb is to inspect the manifold for the extent of rust once in two to four years, and every time you remove the riser. The new part is a big investment, but it will obviously cost less money than replacing the motor due to a leaking water jacket. Here you’ll find correctly-fitting, high-quality yet reasonably-priced replacement exhaust manifolds and all of the necessary gaskets, bolts, and block-off plates.