Inboard Engine Exhaust Manifolds
As tough as marine manifolds are, they can eventually fail due to the extreme heat, saltwater and corrosive gases they’re subject to. Marine Parts Source carries dozens of exhaust manifold parts so you can quickly repair your inboard engine. Shop for all the top inboard engine brands such as Volvo Penta, Crusader, Indmar and MerCruiser. Purchase OEM boat exhaust manifolds for guaranteed quality or proven aftermarket manifolds to upgrade their performance. You’ll even find LS engine manifolds for high performance applications.
Browse our full collection below or enter an exhaust manifold part number into the search bar to find the correct part for repairs and rebuilds. We provide all the information you need, including which OE parts it replaces. You can even see which warehouses the manifold is in stock at. We’ll ship from the nearest location, so it arrives fast — and most marine exhaust manifolds qualify for free shipping.
Exhaust Manifolds
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ETX Port Aluminum Exhaust Manifold | Indmar 531301EIND-531301EQty In Stock: 10Brand: IndmarOEM Indmar one piece exhaust manifold used on Vortec 5.7 liter Monsoon & 6.2 liter Hammerhead marine engines
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ETX Starboard Aluminum Exhaust Manifold | Indmar 531300EIND-531300EQty In Stock: 5Brand: IndmarOEM Indmar one piece exhaust manifold used on Vortec 5.7 liter Monsoon & 6.2 liter Hammerhead marine engines
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EXTCAT Starboard Aluminum Catalyst Exhaust Manifold | Indmar 531400HLIND-531400HLQty In Stock: 7Brand: IndmarOEM Indmar one piece exhaust manifold with catalyst exhaust element for Vortec 5.7 liter Monsoon & 6.2 liter Hammerhead marine engines.
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EXTCAT Port Aluminum Catalyst Exhaust Manifold | Indmar 531401HLIND-531401HLQty In Stock: 0Brand: IndmarOEM Indmar one piece exhaust manifold with catalyst exhaust element for Vortec 5.7L Monsoon & 6.2L Hammerhead marine engines. Learn More
GM V8 Small Block Exhaust Manifold | Indmar 531051IND-531051Qty In Stock: 17Brand: IndmarGM V8 Small Block Exhaust Manifold Learn More© 2025 Marine Parts Source. All Rights Reserved.