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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4 Cylinder 3.0L Exhaust Manifold | Evinrude/Johnson3858870BRP-3858870Qty In Stock: 0Brand: Johnson/Evinrude/OMCOEM cast iron combination intake & exhaust manifold fits OMC & Volvo Penta 3.0L marine engines. Learn More
Ford Small BLock Exhaust Manifold | Volvo Penta 3852347VOLVO-3852347Qty In Stock: 0Brand: Volvo PentaFord Small BLock Exhaust Manifold Learn More
Exhaust Manifold Kit | Quicksilver 860235A04QS-860235A04Qty In Stock: 0Brand: QuicksilverQuicksilver 860235A04 Exhaust Manifold Kit
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Catalyst Exhaust Manifold Starboard Tall | Volvo Penta 21356425VOLVO-21356425Qty In Stock: 0Brand: Volvo PentaVolvo Penta GM 5.0L and 5.7L tall exhaust manifold for catalyst engines, starboard side. Fits a variety of engine models requiring additional exhaust discharge height over the standard exhaust manifold.
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Manifold | Volvo Penta 21571538VOLVO-21571538Qty In Stock: 0Brand: Volvo PentaManifold Learn More
Crusader Small Block GM Exhaust Manifold Kit with 3 inch Elbows | MMD Powerline BARR-CRU-SB-KIT-3MMD-BARR-CRU-SB-KIT-3Out of stockExhaust manifold kit for Crusader small block GM engines with log style exhaust manifolds and 3-inch exhaust elbows. Each kit includes (1) port side exhaust manifold, (1) starboard side exhaust manifold, (2) exhaust elbows and all gaskets and hardware needed for installation.
Learn MoreMSRP:Special Price $0.00 Regular Price $1,225.00Out of stock
Mercruiser Catalyst Exhaust Manifold Assembly | Quicksilver 8M0103774QS-8M0103774Qty In Stock: 0Brand: QuicksilverQuicksilver port exhaust manifold used on Mercruiser 5.0L. 5.7L and 6.2L fuel injected engines with catalyst exhaust. Hot dipped and top coated for saltwater or freshwater applications.
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Mercruiser Exhaust Manifold Conversion Kit | Quicksilver 866178A02QS-866178A02Qty In Stock: 0Brand: QuicksilverQuicksilver conversion kit for Mercruiser 496 Mag and 8.1S engines includes newer style cast iron manifold to replace old-style aluminum manifold with separate water rails.
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Manifold | Volvo Penta 21571539VOLVO-21571539Qty In Stock: 0Brand: Volvo PentaManifold Learn More
OMC GM Small Block Exhaust Manifold | Barr OMC-1-912442BARR-OMC-1-912442Qty In Stock: 0Brand: Barr MarinePort side log style manifold fits OMC 225 HP & 245 HP marine engines. Learn More© 2025 Marine Parts Source. All Rights Reserved.