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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Crusader Center Rise GM Small Block Exhaust Manifold | Barr CR-1-98243BARR-CR-1-98243Qty In Stock: 17Brand: Barr MarineCrusader center rise manifold fits port and starboard side Crusader GM 5.0L & 5.7L marine engines. Learn More
OMC 3.0L 4 Cylinder Exhaust Manifold | Barr OMC-1-984054BARR-OMC-1-984054Qty In Stock: 1Brand: Barr MarineCast iron log style combination intake & exhaust manifold fits OMC 140 HP 181 CID marine engines. Includes manifold-to-head gasket, riser gasket, end plate gasket, and mounting hardware.
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OMC GM Small Block Exhaust Manifold | Sierra 18-1902SIERRA-18-1902Qty In Stock: 7Brand: SierraStarboard exhaust manifold fits OMC GM 5.0L & 5.7L marine engines with end riser. Learn More
GM Big Block Center Rise Exhaust Manifold | Barr CHVA-1-84BARR-CHVA-1-84Qty In Stock: 29Brand: Barr MarineGeneric center rise manifold for GM 454 & 502 CID marine engines. Learn More
Mercruiser 2.5-Liter 4 Cylinder Exhaust Manifold | Barr MC-1-63122BARR-MC-1-63122Qty In Stock: 8Brand: Barr MarineCast iron combination intake & exhaust manifold fits Mercruiser 120 HP 153 CID 4 cylinder marine engines. Learn More
Chrysler Small Block Exhaust Manifold | Barr CM-1-6677ABARR-CM-1-6677AQty In Stock: 46Brand: Barr MarineCast iron flat-top log style exhaust manifold fits Chrysler LM318, M340, & M360 marine engines from 1973-1986. Learn More
GM Small Block Exhaust Manifold | Crusader 98243CRU-98243Qty In Stock: 18Brand: CrusaderOEM Crusader center rise manifold fits Crusader GM 5.0L & 5.7L marine engines. Learn More
Volvo Penta GM Small Block Exhaust Manifold | Barr VO-1-835804BARR-VO-1-835804Qty In Stock: 41Brand: Barr MarineCast iron center rise exhaust manifold fits many Volvo Penta small block marine engines. Learn More
Mercruiser V8 Small Block Exhaust Manifold | Quicksilver 860246A15QS-860246A15Qty In Stock: 13Brand: QuicksilverQuicksilver saltwater manifold for Mercruiser GM V8 305, 350, and 377 CID marine engines from 1983-2002. Fits either port or starboard side.
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GM Big Block Exhaust Manifold | Evinrude/Johnson 3861459BRP-3861459Qty In Stock: 1Brand: Johnson/Evinrude/OMCOEM cast iron center rise exhaust manifold fits OMC & Volvo Penta 7.4L 454 CID & 8.2L 502 CID marine engines. 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.