-14% sale
Volvo Penta Qualifies for Free Shipping Volvo Penta Exhaust Manifold #21356421 Volvo Penta Qualifies for Free Shipping Volvo Penta Exhaust Manifold Starboard #21356421
00
DAYS
00
HRS
00
MIN
00
SEC
Volvo Penta Volvo Penta Exhaust Manifold Starboard #21356421 $1,699.16 $1,971.03
Volvo Penta 21356421 ManifoldsVolvo Penta standard height starboard exhaust manifold used on 5.0L and 5.7L catalyst engines. Volvo Penta starboard exhaust manifold Used on 5.0L and 5.7L engines with catalyst exhaust system Standard height manifold Normalized SKU: 21356421
-14% sale
Volvo Penta Qualifies for Free Shipping Volvo Penta Exhaust Manifold #21356423 Volvo Penta Qualifies for Free Shipping Volvo Penta Exhaust Manifold #21356423
00
DAYS
00
HRS
00
MIN
00
SEC
Volvo Penta Volvo Penta Exhaust Manifold Port #21356423 $1,699.16 $1,971.03
Volvo Penta 21356423 ManifoldsVolvo Penta standard height port exhaust manifold used on 5.0L and 5.7L catalyst engines. Volvo Penta port exhaust manifold Used on 5.0L and 5.7L engines with catalyst exhaust system Standard height manifold Normalized SKU: 21356423
Mercury Marine Exhaust Manifold #807078T08 Mercury Marine Exhaust Manifold #807078T08
Mercury Marine Mercury Marine Exhaust Manifold #807078T08 $379.99
Mercury Marine 807078T08 Manifolds Fits both port and starboard side of engine and economical E-COATED for longevity. Fits: • Mercruiser 7.4-LITER (454 CID) and 8.2-Liter (502 CID) engines with center riser (1983 and newer)Normalized SKU: 807078T08UPC Code: 745061739642
-14% sale
Indmar Not Qualified for Free Shipping Indmar EXTCAT Starboard Aluminum Catalyst Exhaust Manifold #531400HL Indmar Not Qualified for Free Shipping Indmar EXTCAT Starboard Aluminum Catalyst Exhaust Manifold #531400HL
00
DAYS
00
HRS
00
MIN
00
SEC
Indmar Indmar EXTCAT Starboard Aluminum Catalyst Exhaust Manifold #531400HL $1,973.20 $2,288.91
Indmar 531400HL Manifolds OEM Indmar one piece exhaust manifold with catalyst exhaust element for Vortec 5.7L Monsoon & 6.2L Hammerhead marine engines. Indmar EXTCAT starboard side aluminum one piece exhaust manifold and riser Used on Indmar Vortec 5.7L Monsoon and 6.2L Hammerhead engines with catalyst exhaust systems Engines serial no. 172317 and below require replumbing kit p.n. 495180 if not already updated (see Product Attachments) Manifold catalyst installed and non-servicable Does not include fittings or decals Painted black Starboard side only - for port side order p.n. 531401HL Manifold Gasket P/N 556202SPEC and Dump Gasket P/N 765006 - sold separately Normalized SKU: 531400HL
-18% sale
Barr Not Qualified for Free Shipping Barr Mercruiser 8.1L 496 Exhaust Manifold #MC-1-866178 Barr Not Qualified for Free Shipping Barr Mercruiser 8.1L 496 Exhaust Manifold #MC-1-866178
00
DAYS
00
HRS
00
MIN
00
SEC
Barr Barr Mercruiser 8.1L 496 Exhaust Manifold #MC-1-866178 $712.38 $862.65
Barr MC-1-866178 Manifolds Barr Marine GM 8.1 and 8.2L cast iron center rise exhaust manifold without the water rail. Can be used for the port or starboard side of the engine. Mercruiser GM V-8 Aftermarket Exhaust Manifold - 8.1L & 8.2L Fits MCM/MIE 8.1L & 8.2L non‑EC engines Barr Marine  GM 8.1 and 8.2L cast iron center rise exhaust manifold without the water rail This kit includes the exhaust manifold, the mounting bolts,  and the manifold to head gasket Normalized SKU: MC1866178
-19% sale
Crusader Not Qualified for Free Shipping Crusader Exhaust Manifold 6.0L #R028024 Crusader Not Qualified for Free Shipping Crusader Exhaust Manifold 6.0L #R028024
00
DAYS
00
HRS
00
MIN
00
SEC
Crusader Crusader Exhaust Manifold 6.0L #R028024 $402.15 $495.08
Crusader R028024 Manifolds Original equipment Crusader exhaust manifold For Crusader GM V8 6.0L marine engines from 2004 and newer Interchangeable between port and starboard side Heavy duty cast iron Painted Crusader blue from the factory Manifold to head gasket RM0276 sold separately Riser gasket RM0274A sold separately Normalized SKU: R028024
-20% sale
Volvo Penta Not Qualified for Free Shipping Volvo Penta Exhaust Manifold 5.0 and 5.7L #3847501
00
DAYS
00
HRS
00
MIN
00
SEC
Volvo Penta Volvo Penta Exhaust Manifold 5.0 and 5.7L #3847501 $514.26 $641.86
Volvo Penta 3847501 Manifolds Volvo Penta center rise exhaust manifold For Volvo Penta GM 5.0L and 5.7L marine engines with center rise exhaust manifolds Interchangeable between the port and starboard side Includes drain plug assembly and 90-degree hose connector Does not include gaskets Heavy-duty cast iron Painted black Original Volvo Penta Replaces OMC 3857723 Replaces Volvo 3857723 Normalized SKU: 3847501
Mercury Marine Mercury Marine Exhaust Manifold #807078T10 $565.99
Mercury Marine 807078T10 ManifoldsMercury Marine Exhaust Manifold #807078T10Normalized SKU: 807078T10UPC Code: 745061739659
-22% sale
Sierra Oversized - Not Qualified for Free Shipping Sierra Manifold #18-1952-1
00
DAYS
00
HRS
00
MIN
00
SEC
Sierra Sierra Manifold #18-1952-1 $327.02 $415.34
Sierra 18-1952-1 ManifoldsManifoldOEM Interchange:MERCURY MARINE: 99746A17MERCURY MARINE: 99746A8Sierra Manifold #18-1952-1Normalized SKU: 1819521UPC Code: 808282237448
Sold out -22% sale
Sierra Oversized - Not Qualified for Free Shipping Sierra Manifold #18-1925
00
DAYS
00
HRS
00
MIN
00
SEC
Sierra Sierra Manifold #18-1925 $336.79 $427.74
Sierra 18-1925 ManifoldsManifoldOEM Interchange:CRUSADER: 96120CRUSADER: 97752Sierra Manifold #18-1925Normalized SKU: 181925UPC Code: 808282126964
Sold out NEW ARRIVAL -16% sale
EMP Qualifies for Free Shipping EMP Exhaust Manifold #57-57518
00
DAYS
00
HRS
00
MIN
00
SEC
EMP EMP Exhaust Manifold #57-57518 $424.00 $503.18
EMP 57-57518 ManifoldsEMP Exhaust Manifold #57-57518Normalized SKU: 5757518UPC Code: 840080499567
NEW ARRIVAL -22% sale
EMP Qualifies for Free Shipping EMP Exhaust Manifold #57-57514
00
DAYS
00
HRS
00
MIN
00
SEC
EMP EMP Exhaust Manifold #57-57514 $336.20 $427.00
EMP 57-57514 ManifoldsEMP Exhaust Manifold #57-57514Normalized SKU: 5757514UPC Code: 840080499512
NEW ARRIVAL -22% sale
EMP Qualifies for Free Shipping EMP Exhaust Manifold #57-57511
00
DAYS
00
HRS
00
MIN
00
SEC
EMP EMP Exhaust Manifold #57-57511 $310.98 $394.96
EMP 57-57511 ManifoldsEMP Exhaust Manifold #57-57511Normalized SKU: 5757511UPC Code: 840080499482
NEW ARRIVAL -22% sale
EMP Qualifies for Free Shipping EMP Exhaust Manifold #57-57510
00
DAYS
00
HRS
00
MIN
00
SEC
EMP EMP Exhaust Manifold #57-57510 $300.84 $382.09
EMP 57-57510 ManifoldsEMP Exhaust Manifold #57-57510Normalized SKU: 5757510UPC Code: 840080499475
NEW ARRIVAL -22% sale
EMP Qualifies for Free Shipping EMP Exhaust Manifold #57-57507
00
DAYS
00
HRS
00
MIN
00
SEC
EMP EMP Exhaust Manifold #57-57507 $306.87 $389.74
EMP 57-57507 ManifoldsEMP Exhaust Manifold #57-57507Normalized SKU: 5757507UPC Code: 840080499437
Sold out NEW ARRIVAL -20% sale
EMP Qualifies for Free Shipping EMP Exhaust Manifold #57-57506
00
DAYS
00
HRS
00
MIN
00
SEC
EMP EMP Exhaust Manifold #57-57506 $372.39 $464.78
EMP 57-57506 ManifoldsEMP Exhaust Manifold #57-57506Normalized SKU: 5757506UPC Code: 840080499420
NEW ARRIVAL -22% sale
EMP Qualifies for Free Shipping EMP Exhaust Manifold #57-57503
00
DAYS
00
HRS
00
MIN
00
SEC
EMP EMP Exhaust Manifold #57-57503 $312.35 $396.70
EMP 57-57503 ManifoldsEMP Exhaust Manifold #57-57503Normalized SKU: 5757503UPC Code: 840080499390
Mercury Marine Mercury Dry Joint Conversion Exhaust #8M0164159 $1,942.99
Mercury Marine 8M0164159 ManifoldsMercury Dry Joint Conversion Exhaust #8M0164159Normalized SKU: 8M0164159UPC Code: 678633124891
Sold out
Mercury Marine Truck Freight - Not Qualified for Free Shipping Mercury Dry Joint Exhaust Kit #8M0164162
Mercury Marine Mercury Dry Joint Exhaust Kit #8M0164162 $2,073.49
Mercury Marine 8M0164162 Manifolds The Mercury 8M0164162 Exhaust Manifold & Elbow Kit is a comprehensive, genuine OEM solution designed to replace the dry joint 14° exhaust system on MCM small block V6 engines with standard cooling and no risers. This complete kit includes all necessary components for a professional-grade installation, ensuring optimal exhaust flow, reliable performance, and long-term durability in demanding marine environments. Specifically engineered for 2004 and newer MCM V6 (non-EC) engines with serial numbers 0W310000 and above, this kit delivers the precision fit and quality you expect from Mercury Marine. The dry joint design simplifies installation while providing robust, leak-free performance that stands up to the rigors of marine use. Whether you're performing routine maintenance or addressing exhaust system wear, this kit provides everything you need for a complete, factory-quality repair. Important Note: Engines equipped with freshwater cooling and/or risers may require additional exhaust elbow gaskets, which should be ordered separately to ensure proper installation. Compatibility: Fits 2004 & newer MCM V6 (non-EC) engines Serial number 0W310000 and above Standard cooling configuration without risers Normalized SKU: 8M0164162UPC Code: 678633124921
Mercury Marine Truck Freight - Not Qualified for Free Shipping Mercury Dry Joint Exhaust Kit #8M0164161
Mercury Marine Mercury Dry Joint Exhaust Kit #8M0164161 $2,128.49
Mercury Marine 8M0164161 Manifolds The Mercury 8M0164161 Exhaust Manifold & Elbow Kit is a complete, genuine OEM solution engineered to replace the dry joint 14° exhaust system on MCM small block V8 engines with standard cooling and no risers. This comprehensive kit includes all necessary components for a professional-grade installation, delivering optimal exhaust flow, reliable performance, and long-lasting durability in the demanding marine environment. Precision-engineered for GM small block engines (305, 350 & 377 CID) equipped with dry joint 14° exhaust elbows, this kit ensures a factory-quality fit and finish. The dry joint design simplifies installation while providing robust, leak-free operation that withstands the rigors of marine use. Whether you're performing scheduled maintenance or addressing exhaust system wear, this kit delivers everything you need for a complete, reliable repair using genuine Mercury Marine components. Important Note: Engines equipped with freshwater cooling and/or risers may require additional exhaust elbow gaskets, which should be ordered separately to ensure proper installation. Compatibility: 2004 & newer MCM sterndrives (non-EC) engines with serial number 0W310000 and above 2002 & newer MIE inboards (non-EC) engines with serial number 0M317000 and above GM small block engines: 305, 350 & 377 CID Dry joint 14° exhaust elbow configuration Standard cooling without risers Normalized SKU: 8M0164161UPC Code: 678633124914

Frequently Asked Questions

First Choice Marine is an online marine retailer carrying a diverse line of marine parts and accessories and related items from industry-respected and demanded manufacturers and suppliers. Through our diverse distributor network, we are able to access over 150,000 items, including our current site inventory, new products being added, and special order items. If you need it on your boat... we are your one-stop shop!

Yes, we offer FREE Shipping on most orders over $149 to US-48*.

Each product displays a shipping status message, just above the item price. Below is the meaning for each of these codes.

  • Qualifies for Free Shipping: This item qualifies for free shipping when the order is $149+
  • Qualifies for Free Ground Shipping: This item qualifies for free ground shipping when the order is $149+.
  • Oversized - Not Qualified for Free Shipping: This item is too large/heavy to qualify for free shipping
  • Hazardous Item - Not Qualified for Free Shipping: This item is hazardous and does not qualify for free shipping
  • Truck Freight - Not Qualified for Free Shipping: This item has to be shipped via truck freight. Please contact us for a quote
  • In-Store Pickup Only: This item can only be picked up in our Grain Valley, MO retail store

Below the price of the item, on the product page, there is a message indicating the availability of the product.

The quantity on hand is updated as inventory events happen and matches what we have available. If you have urgent needs and we are close to what you need, contact us, and we can confirm stock.

We offer a hassle-free return policy. If you're not completely satisfied with your purchase, you can return it within 30 days for a full refund or exchange.

If you need to return an item, please follow the guidelines here so we can process a prompt refund and assist you in finding the correct item.

Free Shipping

On most orders $149+ to the continental 48 US states.

Secure Shopping

Fast, secure checkout with a variety of payment methods.

Shop with confidence

25+ years serving the marine industry.

Support center

Need help? Contact us via live chat, phone, or email.