MerCruiser Exhaust
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OEM MerCruiser 4.3 V6 Exhaust Manifold and Riser Kit (4 inch) 1983-2002 99746A17 807988Q03
Mercury Marine / Quicksilver
$1,345.96 $1,091.92OEM 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 MerCru- 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)
$1,345.96 $1,091.92 -
OEM MerCruiser 305/350 Exhaust Manifold & Riser Kit - 5.7 / 5.0 / 6.2 E-Coated (1986-2002) 860246Q11 807988Q03
Mercury Marine / Quicksilver
$1,251.96 $1,149.99Genuine OEM MerCruiser exhaust manifold & riser kit for center-riser small block V8 sterndrive and inboard engines, 5.0/305, 5.7/350, and 6.2/377, approx. 1986–2002. Everything to redo both sides of...- 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)
$1,251.96 $1,149.99 -
OEM MerCruiser 7.4 / 454 / 502 Exhaust Manifold and Riser kit 807078T08 807988Q03
Mercury Marine / Quicksilver
$1,279.96 $1,189.99Genuine OEM MerCruiser big block exhaust manifold & riser kit for 454 and 502 center-riser engines with 4" risers, approx. 1983–2002. Redo both sides of your big block exhaust in one kit. 2×...- 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)
$1,279.96 $1,189.99 -
On Sale
OEM MerCruiser 350/5.7/5.0/6.2 dry joint SB V8 Exhaust Manifold & Riser Kit (14 Degree) 8M0185794 864591T02
Mercury Marine / Quicksilver
$2,020.96 $1,999.99OEM 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...- 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)
$2,020.96 $1,999.99 -
OEM MerCruiser V6 V8 DRY JOINT Restricted riser elbow Gasket 27-864850a02
Mercury Marine / Quicksilver
$57.99Genuine OEM MerCruiser riser elbow gasket, #27-864850A02. For 2002 and newer V6 and V8 MerCruiser sterndrive and inboard engines with dry-joint exhaust manifolds. This is the restrictor style...- Part Number:
- 710-27-864850A02
- Availability:
- In Stock - Ships same or next business day.
$57.99 -
OEM MerCruiser DRY JOINT riser elbow Full Flow Gasket 27-864547a02
Mercury Marine / Quicksilver
$66.99 $56.99OEM 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...- Part Number:
- 710-27-864547A02
- Availability:
- In Stock - Ships same or next business day.
$66.99 $56.99 -
OEM MerCruiser V6 V8 DRY JOINT riser elbow block off Gasket 27-864549a02
Mercury Marine / Quicksilver
$56.49 $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...- Part Number:
- 710-27-864549A02
- Availability:
- In Stock - Ships same or next business day.
$56.49 $47.99 -
OEM MerCruiser Restricted Riser Elbow to Manifold Gasket 27-863724
Mercury Marine / Quicksilver
$18.29 $12.99Genuine OEM MerCruiser riser elbow gasket, part #27-863724. The factory seal between manifold and riser elbow. This is the restricted (standard-cooling) restrictor gasket, the partially-open version,...- Part Number:
- 710-27-863724
- Availability:
- In Stock - Ships same or next business day.
$18.29 $12.99 -
OEM MerCruiser Full Flow Riser Elbow Gasket 27-863726
Mercury Marine / Quicksilver
$21.59 $18.49Genuine OEM MerCruiser exhaust riser elbow gasket, part #27-863726. Seals between the exhaust manifold and riser elbow. This is the full-flow, 4-slot “completely open” gasket. The wrong gasket here...- Part Number:
- 710-27-863726
- Availability:
- In Stock - Ships same or next business day.
$21.59 $18.49 -
OEM MerCruiser 3.0 Exhaust Riser Elbow Gasket 27-997772
Mercury Marine / Quicksilver
$4.59 $4.49Exhaust elbow gasket 27-997772 for use on 120 series (1983 and newer), 140/3.0L in-line 6-cylinder and V-8 small block (1982 and older) MerCruiser stern drive and inboard engines made by General...- Part Number:
- 710-27-997772
- Availability:
- In Stock - Ships same or next business day.
$4.59 $4.49 -
OEM MerCruiser V8 Big Block 454 482 496 502 Manifold to Head Gasket 27-46820
Mercury Marine / Quicksilver
$24.29 $20.99OEM MerCruiser Big Block Manifold to Head Gasket 27-46820 Exhaust manifold gasket 46820 is for use on V-8 (454,482, 496, 502 and 540 CID) engines made by General Motors for MerCruiser stern drives...- Part Number:
- 710-27-46820
- Availability:
- In Stock - Ships same or next business day.
$24.29 $20.99 -
OEM MerCruiser V8 Small Block Manifold to Head Gasket 27-33395
Mercury Marine / Quicksilver
$14.19 $12.99OEM MerCruiser V8 Small Block Manifold to Head Gasket 27-33395 Exhaust manifold gasket 33395 is for use on V-8 (283, 305, 350 and 377 CID) engines made by General Motors for MerCruiser stern drives...- Part Number:
- 710-27-33395
- Availability:
- In Stock - Ships same or next business day.
$14.19 $12.99 -
OEM MerCruiser 4.3 V6 Manifold to Head Gasket 27-99757 27-8M0215011
Mercury Marine / Quicksilver
$15.00 $12.99OEM MerCruiser 4.3 V6 Manifold to Head Gasket 27-99757 / 8M0215011 Factory gasket that goes between the head and manifold. Used on all center riser 4.3 engines Exhaust manifold gasket 99757 is for...- Part Number:
- 710-27-8M0215011
- Availability:
- In Stock - Ships same or next business day.
$15.00 $12.99 -
OEM MerCruiser 3.0 Manifold to Head Gasket 1990+ # 27-815528
Mercury Marine / Quicksilver
$20.99 $16.53OEM MerCruiser 3.0 Manifold to Head Gasket 1990 + Exhaust manifold gasket 815528 is for use on 3.0L (1998 and newer) and 3.0LX (1990 through 1997) engines made by General Motors for MerCruiser stern...- Part Number:
- 710-27-815528
- Availability:
- In Stock - Ships same or next business day.
$20.99 $16.53 -
OEM MerCruiser 3.0 Manifold to Head Gasket 1968-1982
Mercury Marine / Quicksilver
$17.99 $12.50OEM MerCruiser 3.0 Manifold to Head Gasket 1968-1982 Factory gasket that goes between the head and manifold. used from years 1968-1982 Please confirm fitment of MerCruiser parts with your serial...- Part Number:
- 710-27-53354
- Availability:
- In Stock - Ships same or next business day.
$17.99 $12.50 -
OEM MerCruiser 3.0 Manifold to Head Gasket 1983-1995
Mercury Marine / Quicksilver
$19.49 $15.43OEM MerCruiser 3.0 Manifold to Head Gasket 1983-1995 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of...- Part Number:
- 710-27-96429
- Availability:
- In Stock - Ships same or next business day.
$19.49 $15.43 -
OEM Quicksilver/Mercury 4" Dry Joint 14 Degree Riser/Elbow 864591T02
Mercury Marine / Quicksilver
$475.49OEM Quicksilver/Mercury 4" Dry Joint 14 Degree Riser/Elbow 864591T02 These Will only work with Dry Joint systems! Exhaust elbow 864591T02 is for use on V-6 and V-8 MerCruiser stern drive engines...- Part Number:
- 710-864591T02
- Availability:
- In Stock - Ships same or next business day.
$475.49 -
OEM MerCruiser 4" Dry Joint 7 Degree Riser/Elbow 864309T02
Mercury Marine / Quicksilver
$414.99OEM 7 Degree Dry Joint Riser Exhaust elbow 864309T02 is for use on V-6 and V-8 MerCruiser stern drive engines made by General Motors with dry joint exhaust manifold (model year 2002 through 2004,...- Part Number:
- 710-864309T02
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- Ceramic
$414.99 -
OEM MerCruiser 4" E-Coated 7 Degree Riser/Elbow 807988Q03
Mercury Marine / Quicksilver
$259.99 $222.99OEM MerCruiser 4" E-Coated 7 Degree Riser/Elbow 807988Q03 Fits MerCruiser GM V6 & V8 engines with center rise outlet exhaust manifold (approx 2002 & older) Replaces OEM#:807988A2 , 807988q03,...- Part Number:
- 710-807988Q03
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- E-Coated
$259.99 $222.99 -
OEM MerCruiser 4" Ceramic Coated Riser/Elbow 807988A03
Mercury Marine / Quicksilver
$348.49 $298.49OEM MerCruiser 4" Ceramic Coated Riser/Elbow 807988A03 Exhaust elbow 807988A03 is for use on V-6 and V-8 MerCruiser stern drive or inboard engines made by General Motors having a center rise outlet...- Part Number:
- 710-807988A03
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- Ceramic
$348.49 $298.49
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.