MerCruiser Exhaust Riser Kits
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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 -
On Sale
Sierra MerCruiser 5.7 350 / 5.0 305 / 6.2 377 V8 Exhaust Manifold & Riser Kit 18-1953-2 18-1976-2
Sierra
$1,059.96 $939.99Sierra MerCruiser 5.7 350 V8 Center Riser Exhaust Manifold & Riser Kit Fits Applications: V-8 305, 350 & 377 Engines from Years 1983-2002 (Port or Starboard Side) Will not work with Dry Joint! 2x Manifold 18-1953-2 Replaces: •...- Part Number:
- K-SIERRA350
- Availability:
- In Stock - Ships same or next business day.
$1,059.96 $939.99 -
Sierra MerCruiser 7.4 454 502 Exhaust Manifold & Riser Kit 18-1957-1 18-1957-2 18-1976-2
Sierra
$1,303.16 $999.99Sierra MerCruiser 7.4 454 502 Big Block V8 Center Riser Exhaust Manifold & Riser Kit 2x Manifold 18-1957-1 SS to 18-1957-2 Replaces • Osco: 9011A • GLM: 51240 • MerCruiser: 89011A8 , 807078T08 ,...- Part Number:
- k-sierra454
- Availability:
- In Stock - Ships same or next business day.
$1,303.16 $999.99 -
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 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 -
Sierra MerCruiser 4.3 V6 Exhaust Manifold & Riser Kit 18-1952-1 18-1976-2
Sierra
$1,308.76 $1,019.99Sierra Exhaust Manifold and Riser Kit for MerCruiser V6 4.3 Liter 2x Manifold 18-1952-1 Replaces: • Osco: 9745 • GLM: 51220 • MerCruiser: 99746A17 • Barr marine: 1-99746 2x Riser Elbow...- Part Number:
- k-sierra262
- Availability:
- In Stock - Ships same or next business day.
$1,308.76 $1,019.99 -
OEM MerCruiser 305/350 HD Coated Exhaust Manifold & Riser Kit - 5.7 / 5.0 / 6.2 (1986-2002) 860246A15 807988A03
Mercury Marine / Quicksilver
$1,534.54 $1,389.99OEM MerCruiser HD(Hot dipped) Coated 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 or newer you may need dry joint exhaust. Please call us with...- Part Number:
- K-OEM350-HD
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- Hot Dipped (Ceramic)
- Engine Size:
- Small V8 (5.0, 5.7, 6.2)
- Generation:
- Wet Joint (86-2002)
$1,534.54 $1,389.99 -
OEM Mercury / Quicksilver EC Emissions Control 4" Rise Exhaust Elbow Riser Kit 8M0104210 8M0153671
Mercury Marine / Quicksilver
$2,026.49 $1,729.99OEM Mercury / Quicksilver EC Emissions Control 4" Rise Exhaust Elbow Riser Kit 879288A28 8M0094681 8M0104210 8M0153671- Part Number:
- 710-8M0153671
- Availability:
- In Stock - Ships same or next business day.
$2,026.49 $1,729.99 -
OEM MerCruiser EC Exhaust Manifold & Riser Kit 5.0 5.7 6.2 (2010+) 8M0103773 8M0103774
Mercury Marine / Quicksilver
$2,499.98OEM MerCruiser EC Exhaust Manifold & Riser Kit 5.0 5.7 6.2 (2010+) 8M0103773 8M0103774- Part Number:
- K-OEM350EC
- Availability:
- In Stock - Ships same or next business day.
$2,499.98 -
Sierra MerCruiser 5.7 350 / 5.0 305 V8 Exhaust Manifold & 3 inch Riser Kit 18-1953-2 18-1970-2
Sierra
$1,442.96 $999.99Sierra MerCruiser 5.7 350 V8 Center Riser Exhaust Manifold & Riser Kit Fits Applications: V-8 305, 350 & 377 Engines from Years 1984 and earlier with 3 inch riser outlets 2x Manifold 18-1953-2 Replaces: • MerCrusier: 87114, 87114A19,...- Part Number:
- k-sierra350-3
- Availability:
- In Stock - Ships same or next business day.
$1,442.96 $999.99 -
OEM MerCruiser HD-coated 7.4 / 454 / 502 Exhaust Manifold and Riser kit 807078T10 807988A03
Mercury Marine / Quicksilver
$1,757.96 $1,661.96OEM MerCruiser 454 and 502 Exhaust Kit Hot Dipped and coated OEM parts. Fits: • 454 and 502 center riser style engines with 4 inch risers • Approx. 1983-2002 Includes: • 2x OEM MerCriuser Manifold...- Part Number:
- K-OEM454-HD-CERAMIC
- Availability:
- Same Or Next Business Day
- Coating:
- Hot Dipped (Ceramic)
- Engine Size:
- Big Block V8 (454 and 502)
- Generation:
- Wet Joint (86-2002)
$1,757.96 $1,661.96 -
(14 Degree) Dry Joint OEM MerCruiser 4.3 V6 Exhaust Manifold and Riser Kit 864612T01 864591T02
Mercury Marine / Quicksilver
$1,867.96OEM MerCruiser 4.3 V6 Exhaust Kit For MerCruiser 4.3 engines with DRY JOINT center riser exhaust and 14 degree 4 inch risers (if you are not sure of the angle of your risers, please call us with your serial number) 2002+ with some...- Part Number:
- K-OEM262DRY14
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- Hot Dipped (Ceramic)
- Engine Size:
- 4.3 v6
- Generation:
- Dry Joint (02-2010)
$1,867.96 -
Sold Out, please call for ETA.
Sierra MerCruiser "14 Degree" dry joint V8 Exhaust Manifold & Riser Kit
Sierra
$1,686.28 $1,229.99New Sierra marine dry joint exhaust Kit with 14 Degree Riser Fits: • 2004 and newer MCM GM V-6 & V-8 (305 350 & 377 cid) engines with dry joint exhaust manifold (s/n 0W310000 and up) • 2002 and newer MIE GM V-8 (350 &...- Part Number:
- k-sierra350dry
- Availability:
- Limited Stock - Please call before ordering.
$1,686.28 $1,229.99 -
OEM Mercury / Quicksilver 2 inch Riser Kit EC Emissions Control 8M0153670
Mercury Marine / Quicksilver
$1,477.99 $1,299.99Mercury / Quicksilver RISER KIT 8M0153670- Part Number:
- 710-8M0153670
- Availability:
- In Stock - Ships same or next business day.
$1,477.99 $1,299.99 -
(7 Degree) DRY JOINT OEM MerCruiser 4.3 V6 Exhaust Manifold and Riser Kit 864612T01 864309T02
Mercury Marine / Quicksilver
$1,821.99 $1,799.99OEM MerCruiser 4.3 V6 Exhaust Kit For MerCruiser 4.3 engines with DRY JOINT center riser exhaust and 7 degree 4 inch risers (if you are not sure of the angle of your risers, please call us with your serial number) 2002+ with some...- Part Number:
- K-OEM262DRY7
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- Hot Dipped (Ceramic)
- Engine Size:
- 4.3 v6
- Generation:
- Dry Joint (02-2010)
$1,821.99 $1,799.99 -
OEM Mercury / Quicksilver Exhaust RISER KIT for Emissions Control EC 8M0153486
Mercury Marine / Quicksilver
$2,672.49 $2,349.99OEM Mercury / Quicksilver RISER KIT 6 inch 8M0153486- Part Number:
- 710-8M0153486
- Availability:
- In Stock - Ships same or next business day.
$2,672.49 $2,349.99 -
On Sale
OEM MerCruiser 4.3 V6 Exhaust Manifold and Riser Kit (4 inch) 1983-2002 HD Ceramic 99746A17 807988A03
Mercury Marine / Quicksilver
$1,521.96 $1,192.99OEM MerCruiser 4.3 V6 Exhaust Manifold & Riser Kit Hot Dipped Ceramic Coated For MerCruiser 4.3 engines with center riser exhaust and 4 inch risersApprox 1986-2002 with some exceptions Includes: • 2x MerCruiser manifold part number -...- Part Number:
- K-OEM262HDCERAMIC
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- Hot Dipped (Ceramic) Manifolds and Risers
- Engine Size:
- 4.3 v6
- Generation:
- Wet Joint (86-2002)
$1,521.96 $1,192.99 -
OEM MerCruiser 496 / 8.1 Mag Exhaust Manifold & Riser Kit 866178A02
Mercury Marine / Quicksilver
$3,268.98OEM MerCruiser 496 / 8.1 Mag Exhaust Manifold & Riser Kit 866178A02 • Converts water rail manifolds to regular Includes turbulator and necessary hoses and parts! Fits MCM/MIE 496 MAG & 8.1S engines Part fits port or...- Part Number:
- K-OEM496
- Availability:
- In Stock - Ships same or next business day.
$3,268.98 -
OEM Mercury / Quicksilver 496 6 inch riser kit 863124A02 8M0124068
Mercury Marine / Quicksilver
$862.07 $759.99OEM Mercury / Quicksilver RISER KIT - 6 98-8M0124068- Part Number:
- MM-8M0124068
- Availability:
- See Special Order Details
$862.07 $759.99
MerCruiser Exhaust Manifold and Riser Kits
Routine replacement of your MerCruiser exhaust manifold and boat risers is essential to keeping your engine running at peak performance. Over time, saltwater exposure and heat cycles can corrode and block passages inside your exhaust risers for MerCruiser engines, leading to restricted water flow, overheating, and potential engine damage. That’s why experienced boaters trust genuine MerCruiser manifolds and risers when it’s time for service.
At PowerBoatSupply.com, you’ll find a complete selection of OEM riser exhaust components, including full MerCruiser manifold risers and gasket kits. Whether you need a simple exhaust riser replacement or a full MerCruiser 5.0 exhaust manifold and riser replacement, we carry the right parts to match your engine model. Using genuine MerCruiser risers ensures proper cooling, long-term reliability, and the exact fit your boat’s engine demands.
We make it easy to shop the right exhaust risers for MerCruiser engines, from V6 to big block applications. Each kit includes the parts you need to get back on the water with confidence. Backed by over 35 years of marine parts expertise, PowerBoatSupply.com offers the best selection, competitive pricing, and fast shipping on all OEM MerCruiser manifolds and risers.