Marine Exhaust Manifolds
- Sierra®Exhaust Manifold Gasket for MerCruiser EnginesExhaust Manifold Gasket for MerCruiser Engines by Sierra®. 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, this product by Sierra will...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$9.20 - $22.35
- Sierra®Exhaust Manifold Gasket for Mercury EnginesExhaust Manifold Gasket for Mercury Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine applications....Built for maximum strength and enduranceExpertly crafted from the highest grade materials$4.18 - $13.63
- Sierra®Exhaust Manifold Gasket for OMC EnginesExhaust Manifold Gasket for OMC Engines by Sierra®. 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, this product by Sierra will last a...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$9.20 - $19.70
- Sierra®Exhaust Manifold Gasket for Volvo Penta EnginesExhaust Manifold Gasket for Volvo Penta Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$9.20 - $54.26
- Sierra®Exhaust Manifold Kit for Chris Craft EnginesExhaust Manifold Kit for Chris Craft Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine applications....Built for maximum strength and enduranceExpertly crafted from the highest grade materials$238.56
- Sierra®Exhaust Manifold Kit for Ford EnginesExhaust Manifold Kit for Ford Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine applications. It...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$278.32 - $279.55
- Sierra®Exhaust Manifold Kit for GM EnginesExhaust Manifold Kit for GM Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine applications. It will...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$238.56 - $433.44
- Sierra®Exhaust Manifold Kit for MerCruiser EnginesExhaust Manifold Kit for MerCruiser Engines by Sierra®. 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, this product by Sierra will...Engineered to high standardsHigh-grade design delivers extended lifespan$238.56 - $475.82
- Sierra®Exhaust Manifold Kit for OMC EnginesExhaust Manifold Kit for OMC Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine applications. It will...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$286.17
- Sierra®Exhaust Manifold Mounting Kit for Barr Marine EnginesExhaust Manifold Mounting Kit for Barr Marine Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$27.89
- Sierra®Exhaust Manifold Mounting Kit for Chrysler EnginesExhaust Manifold Mounting Kit for Chrysler Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$21.91
- Sierra®Exhaust Manifold Mounting Kit for Crusader EnginesExhaust Manifold Mounting Kit for Crusader Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$14.47 - $27.21
- Sierra®Exhaust Manifold Mounting Kit for Ford EnginesExhaust Manifold Mounting Kit for Ford Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$23.62 - $27.89
- Sierra®Exhaust Manifold Mounting Kit for GM EnginesExhaust Manifold Mounting Kit for GM Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine applications....Built for maximum strength and enduranceExpertly crafted from the highest grade materials$27.21 - $45.27
- Sierra®Exhaust Manifold Mounting Kit for Indmar EnginesExhaust Manifold Mounting Kit for Indmar Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$27.89
- Sierra®Exhaust Manifold Mounting Kit for MerCruiser EnginesExhaust Manifold Mounting Kit for MerCruiser Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$18.14 - $19.10
- Sierra®Exhaust Manifold Mounting Kit for OMC EnginesExhaust Manifold Mounting Kit for OMC Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$45.27
- Sierra®Exhaust Manifold Mounting Kit for Volvo Penta EnginesExhaust Manifold Mounting Kit for Volvo Penta Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$31.79 - $45.27
- Sierra®Exhaust Manifold Plug Off Cap for OMC EnginesExhaust Manifold Plug Off Cap for OMC Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine...Expertly crafted from premium materialsDesigned to match rigorous quality standards$8.49 - $8.94
- Sierra®Exhaust Manifold Plug Off Cap for Volvo Penta EnginesExhaust Manifold Plug Off Cap for Volvo Penta Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine...Expertly crafted from premium materialsDesigned to match rigorous quality standards$8.94
- Sierra®Exhaust Manifold for Chrysler EnginesExhaust Manifold for Chrysler Engines by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine applications. It...Built for maximum strength and enduranceExpertly crafted from the highest grade materials$365.50
- 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
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.