MerCruiser Exhaust
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OEM MerCruiser 496 / 8.1 Mag Exhaust Manifold Kit With Parts 866178A02
Mercury Marine / Quicksilver
$924.99 $819.99OEM MerCruiser 496 Mag Exhaust Manifold 866178A02 Exhaust conversion kit 866178A02 converts exhaust manifolds with water rails to the newer style, cast iron manifolds without water rails. For use on 496 Magnum and 8.1S MerCruiser...- Part Number:
- 710-866178A02
- Availability:
- In Stock - Ships same or next business day.
$924.99 $819.99 -
OEM MerCruiser 496 Exhaust Riser Gasket 27-862356
Mercury Marine / Quicksilver
$13.60 $10.99NEW Factory MerCruiser Exhaust Riser Gasket This gasket is used between the riser and the manifold on MerCruiser 496 engine Exhaust elbow gasket 862356 is for use on 496 Magnum and 8.1S MerCruiser stern drives and inboard engines. See your owner's...- Part Number:
- 710-27-862356
- Availability:
- In Stock - Ships same or next business day.
$13.60 $10.99 -
(7 Degree) Dry Joint OEM MerCruiser V8 350/305 Exhaust Manifold Kit (2002-04) 8M0185794 864309T02
Mercury Marine / Quicksilver
$1,825.96New OEM Dry Joint exhaust kit 7 Degree For MCM Serial numbers (OM600000-OW309999) approx 2002-2004 (some early 2005) with 7 degree risers! Includes: • 2x Part Number: 864309T02 riser (7 Degree) • 2x...- Part Number:
- K-OEM350DRY7
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- Hot Dipped (Ceramic)
- Engine Size:
- Small V8 (5.0, 5.7, 6.2)
- Generation:
- Dry Joint (02-2010)
$1,825.96 -
OEM (7 degree risers) MerCruiser V6/V8 "Dry Joint" Exhaust Riser 3" Spacer Kit (7 degree risers) (std cooling) 864929A1
Mercury Marine / Quicksilver
$973.64 $849.99OEM (7 degree risers) MerCruiser V6/V8 "Dry Joint" Exhaust Riser 3" Spacer Kit (7 degree risers) (std cooling) For V6 and V8 engines with (7 degree risers) 864309T02 (std cooling)Will work with Dry Joint Exhaust only Includes: •...- Part Number:
- 710-864929A1
- Availability:
- In Stock - Ships same or next business day.
$973.64 $849.99 -
OEM MerCruiser Exhaust Riser Spacer Kit 3" 93320A13 (4x full flow gaskets)
Mercury Marine / Quicksilver
$489.49NEW OEM MerCruiser 3 inch spacer kit Exhaust riser kit 93320A13 is for use on MerCruiser V-6 TBI stern drive engines with 2-piece exhaust manifolds (serial number 0M614999 and below). Will also fit on MerCruiser stern drive and inboard tow sports V-8...- Part Number:
- 710-93320A13
- Availability:
- In Stock - Ships same or next business day.
$489.49 -
OEM MerCruiser 496 8.1S Mag Exhaust Manifold Cast Iron Alloy 863127T1 863127T02 866178T01
Mercury Marine / Quicksilver
$813.99OEM MerCruiser 496 Mag Exhaust Manifold Cast-Iron Alloy Exhaust manifold 866178T01 is for use on MerCruiser 8.1L and 8.2L non-EC sterndrive and inboard engines. Without water rail. See your owner's manual, parts listing or service manual...- Part Number:
- 710-866178T01
- Availability:
- In Stock - Ships same or next business day.
$813.99 -
OEM Quicksilver/Mercury Exhaust Flapper/Shutter 807166A1
Mercury Marine / Quicksilver
$100.99 $86.49OEM Quicksilver/Mercury Exhaust Flapper/Shutter 807166A1 Stern drive exhaust water shutter 807166A1 is for use on MerCruiser stern drives to keep following seas/water from washing back into the exhaust system and into the engine when engine is not...- Part Number:
- 710-807166A1
- Availability:
- In Stock - Ships same or next business day.
$100.99 $86.49 -
OEM MerCruiser 4" Exhaust Riser elbow mounting bolt 10-43749
Mercury Marine / Quicksilver
$8.00 $6.99OEM MerCruiser Exhaust Riser mounting bolts Fits 4.3 , small block, and big block MerCruiser engines with 4" Riser Elbows Will not work for dry joint (2002+) Not for riser mounted remote oil filter! see other listings- Part Number:
- 710-10-43749
- Availability:
- In Stock - Ships same or next business day.
$8.00 $6.99 -
OEM V6 & V8 Small Block manifold mounting bolt 10-53728 8M0214937
Mercury Marine / Quicksilver
$5.10 $4.59NEW OEM MerCruiser (center riser style) Exhaust manifold mounting bolts Fits V6 and small block engines 5.0-305 , 6.2-377, 383approx 1986+ V6 uses 6 bolts per manifoldV8 uses 4 bolts per manifold- Part Number:
- 710-10-8M0214937
- Availability:
- In Stock - Ships same or next business day.
- Fitment:
- .375-16 x 4.75
$5.10 $4.59 -
OEM MerCruiser 454 / 7.4 Manifold mounting bolt 10-37612
Mercury Marine / Quicksilver
$2.86New OEM MerCruiser Big block manifold mounting bolt 454 /502 Each manifold requires 8 of these bolts- Part Number:
- 710-10-37612
- Availability:
- In Stock - Ships same or next business day.
$2.86 -
OEM MerCruiser 4.3 V6 Exhaust Manifold and Riser Kit (4 inch) 1983-2002 99746A17 807988Q03
Mercury Marine / Quicksilver
$1,293.96 $1,051.38OEM MerCruiser 4.3 V6 Exhaust Manifold & Riser Kit For MerCruiser 4.3 engines with center riser exhaust and 4 inch risersApprox 1986-2002 with some exceptions Includes: • 2x MerCruiser manifold part number - 99746A17 (Replaces 99745,...- Part Number:
- K-OEM262
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- Hot Dipped (Ceramic) Manifolds /E-coated Risers
- Engine Size:
- 4.3 v6
- Generation:
- Wet Joint (86-2002)
$1,293.96 $1,051.38 -
OEM MerCruiser 305/350 Exhaust Manifold & Riser Kit - 5.7 / 5.0 / 6.2 E-Coated (1986-2002) 860246Q11 807988Q03
Mercury Marine / Quicksilver
$1,350.95 $1,059.99OEM MerCruiser exhaust Kit for 5.7 350 or the 5.0 305 Small block and 6.2 377 For MerCruiser center riser small block V8 engines approx. 1986-2002 (if you have a 2002, you may need dry joint exhaust, please call us with your serial...- Part Number:
- K-OEM350
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- E-Coated
- Engine Size:
- Small V8 (5.0, 5.7, 6.2)
- Generation:
- Wet Joint (86-2002)
$1,350.95 $1,059.99 -
OEM MerCruiser 7.4 / 454 / 502 Exhaust Manifold and Riser kit 807078T08 807988Q03
Mercury Marine / Quicksilver
$1,332.96 $1,174.99OEM MerCruiser 454 and 502 Exhaust Kit Fits: • 454 and 502 center riser style engines with 4 inch risers • Approx. 1983-2002 Includes: • 2x OEM MerCriuser Manifold 807078T08 Replaces 807078T10 ...- Part Number:
- K-OEM454
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- E-Coated
- Engine Size:
- Big Block V8 (454 and 502)
- Generation:
- Wet Joint (86-2002)
$1,332.96 $1,174.99 -
OEM MerCruiser 350/5.7/5.0/6.2 dry joint SB V8 Exhaust Manifold & Riser Kit (14 Degree) 8M0185794 864591T02
Mercury Marine / Quicksilver
$1,941.96OEM MerCruiser 350/5.7/5.0/6.2 dry joint SB V8 Exhaust Manifold & Riser Kit (14 Degree) Fits:• 2004 and newer MCM GM V-6 & V8 (305 350 & 377 cid) engines with dry joint exhaust manifold (s/n 0W310000 and up)• 2002 and...- Part Number:
- K-OEM350DRY14
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- Hot Dipped (Ceramic)
- Engine Size:
- Small V8 (5.0, 5.7, 6.2)
- Generation:
- Dry Joint (02-2010)
$1,941.96 -
OEM MerCruiser V6 V8 DRY JOINT Restricted riser elbow Gasket 27-864850a02
Mercury Marine / Quicksilver
$63.99 $54.99OEM MerCruiser DRY JOINT Restricted riser elbow Gasket 27-864850a02 Exhaust elbow gasket 864850A02 is for use on 2002 and newer V-6 and V-8 MerCruiser stern drive and inboard engines with dry joint exhaust manifolds. This is a restrictor style gasket...- Part Number:
- 710-27-864850A02
- Availability:
- In Stock - Ships same or next business day.
$63.99 $54.99 -
OEM MerCruiser DRY JOINT riser elbow Full Flow Gasket 27-864547a02
Mercury Marine / Quicksilver
$60.99 $51.99OEM MerCruiser DRY JOINT riser elbow Full Flow Gasket 27-864547a02 Exhaust elbow gasket 864547A02 is for use on 2002 and newer V-6 and V-8 MerCruiser stern drive and inboard engines with dry joint exhaust manifolds. See your owner's manual or service...- Part Number:
- 710-27-864547A02
- Availability:
- In Stock - Ships same or next business day.
$60.99 $51.99 -
OEM MerCruiser V6 V8 DRY JOINT riser elbow block off Gasket 27-864549a02
Mercury Marine / Quicksilver
$55.99 $47.99OEM MerCruiser DRY JOINT riser elbow block off Gasket 27-864549a02 Exhaust elbow gasket 864549A02 is for use on 2002 and newer V-6 and V-8 MerCruiser stern drive and inboard engines with dry joint exhaust manifolds. This is a block off style gasket. See...- Part Number:
- 710-27-864549A02
- Availability:
- In Stock - Ships same or next business day.
$55.99 $47.99 -
OEM MerCruiser Restricted Riser Elbow to Manifold Gasket 27-863724
Mercury Marine / Quicksilver
$18.29 $13.99OEM MerCruiser Restricted Riser Elbow Gasket 27-863724 Exhaust elbow gasket 863724 is the standard cooling, restrictor gasket. This gasket is for use on V-6 and V-8 MerCruiser stern drives and inboard engines (1981 through 1997) made by General motors...- Part Number:
- 710-27-863724
- Availability:
- In Stock - Ships same or next business day.
$18.29 $13.99 -
OEM MerCruiser Full Flow Riser Elbow Gasket 27-863726
Mercury Marine / Quicksilver
$19.29 $14.49OEM MerCruiser Full Flow Riser Elbow Gasket 27-863726 Factory gasket that goes between the manifold and riser. Used on GM V6 and V8 engines. This is the Completely open gasket for Full Flow engines only! Exhaust elbow gasket 863726 is the standard...- Part Number:
- 710-27-863726
- Availability:
- In Stock - Ships same or next business day.
$19.29 $14.49 -
OEM MerCruiser Block off riser elbow Gasket 27-8637251
Mercury Marine / Quicksilver
$19.69 $13.99OEM MerCruiser Block off riser elbow Gasket 27-8637251 Factory gasket that goes between the manifold and riser. Used on GM V6 and V8 engines. This is the Completely blocked off gasket for closed cooling engines only! Exhaust elbow gasket 8637251 is...- Part Number:
- 710-27-8637251
- Availability:
- In Stock - Ships same or next business day.
$19.69 $13.99
MerCruiser Exhaust
If you want maximum performance and long-term reliability from your MerCruiser inboard engine, routine maintenance of your exhaust system is essential. Corrosion and normal wear can damage exhaust components, leading to poor performance or even serious engine issues. At PowerBoatSupply.com, you’ll find a wide selection of MerCruiser exhaust system parts—including exhaust manifolds, risers, bellows, and other replacement parts to keep your motor running at its best. We carry OEM MerCruiser parts as well as trusted aftermarket options from Sierra and other leading manufacturers.
MerCruiser Exhaust Risers
The exhaust riser is a critical component that should be inspected regularly as part of routine maintenance. At PowerBoatSupply.com, we stock the latest designs that efficiently collect hot gasses from the engine and cool them with a water-filled jacket. This process improves exhaust flow, boosts engine performance, and extends the lifespan of your motor.
MerCruiser Exhaust Manifolds and Components
Whether you need a new MerCruiser transom assembly, exhaust elbows, gaskets, or bolts, PowerBoatSupply.com is your one-stop shop for high-quality parts. From durable MerCruiser exhaust manifolds to complete MerCruiser outdrives, we provide everything you need for annual maintenance or complete rebuilds. With premium OEM and aftermarket options, you’ll spend less time in the shop and more time on the water. With over 35 years of experience in marine engine parts and service, we know the difference quality makes when you rely on your boat’s engine.
Find Quality MerCruiser Exhaust Parts
Shop our full inventory of MerCruiser exhaust components today and get the parts you need shipped fast, so your boat is always ready for the next adventure.