Mercruiser 74-454-502 Exhaust Parts
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OEM MerCruiser DRY JOINT riser elbow Full Flow Gasket 27-864547a02
Mercury Marine / Quicksilver
$58.17 $49.99OEM 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.
$58.17 $49.99 -
OEM MerCruiser 454 /502/7.4 E-Coated Exhaust Manifold 807078T10 807078T08
Mercury Marine / Quicksilver
$416.58 $356.99OEM MerCruiser 454 / 502 / 7.4 Manifold 807078T08 OEM MerCruiser E-Coated Exhaust Manifold Exhaust manifold 807078T08 is for use on the port or starboard (left or right) side of V-8 MerCruiser engines made by General Motors. It fits 454 or 502 cid...- Part Number:
- 710-807078T08
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- E-Coated
$416.58 $356.99 -
OEM MerCruiser Exhaust Manifold 90 Drain Plug Elbow Fitting 22-862210a01
Mercury Marine / Quicksilver
$28.00 $23.99OEM MerCruiser Exhaust Manifold 90 Drain Plug Elbow Fitting 22-862210a01 Stainless Steel Exhaust Manifold Drain Elbow Kit 862210A01 is for use on V-6 and V-8 MerCruiser stern drive and inboard engines with center rise manifolds. Kit includes the...- Part Number:
- 710-22-862210A01
- Availability:
- In Stock - Ships same or next business day.
- Manufacturer Part Number:
- 22-862210a01
$28.00 $23.99 -
MerCruiser " T " fitting for under manifold 22-863786A1
Mercury Marine / Quicksilver
$48.25 $41.49MerCruiser " T " fitting for under manifold 22-863786A1 Exhaust manifold drain t-fitting 863786A1 is for use on MerCruiser V-6 and V-8 (305, 350 and 377 CID) engines with water drain systems. See your owner's manual, parts listing or service manual for...- Part Number:
- 710-22-863786A 1
- Availability:
- In Stock - Ships same or next business day.
$48.25 $41.49 -
Sierra MerCruiser 7.4 454 502 Exhaust Manifold & Riser Kit 18-1957-1 18-1957-2 18-1976-2
Sierra
$1,458.76 $1,049.99Sierra 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.
$1,458.76 $1,049.99 -
OEM MerCruiser Big Block Manifold to Head Gasket 27-46820
Mercury Marine / Quicksilver
$23.33 $19.99OEM 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 and inboards. Will also fit like CID engines used for...- Part Number:
- 710-27-46820
- Availability:
- In Stock - Ships same or next business day.
$23.33 $19.99 -
MerCruiser Quicksilver Upper Exhaust Tube Y-Pipe Bellow 32-44348001
Mercury Marine / Quicksilver
$81.00 $69.49MerCruiser EXHAUST BELLOWS (QUICKSILVER) 32-44348001 Exhaust bellows tube 44348001 is for MerCruiser 120, 140 and select V-6 and V-8 MerCruiser stern drive engines. See your owner's manual or service manual for specific application and instructions.- Part Number:
- 710-32-44348001
- Availability:
- In Stock - Ships same or next business day.
$81.00 $69.49 -
Sierra MerCruiser 4 inch Exhaust Riser Elbow 18-19762 18-1976-1
Sierra
$220.89 $172.59Sierra MerCruiser 4 inch Exhaust Riser Elbow For most MerCruiser engines V6 and V8 ( 4.3 5.0 5.7 6.2 7.4 ) Applications 7" (4" O.D. Riser) Comes as shown in the pictures with bolts and gaskets...- Part Number:
- 47-19762
- Availability:
- In Stock - Ships same or next business day.
$220.89 $172.59 -
OEM MerCruiser DRY JOINT riser elbow block off Gasket 27-864549a02
Mercury Marine / Quicksilver
$53.92 $45.99OEM 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.
$53.92 $45.99 -
MerCruiser Quicksilver Lower Exhaust Tube Y-Pipe Bellow 32-14358001
Mercury Marine / Quicksilver
$78.67 $67.49MerCruiser EXHAUST BELLOWS (QUICKSILVER) 32-14358001 Exhaust bellows tube 14358001 is for MerCruiser stern drive installations. See your owner's manual or service manual for specific application and instructions.- Part Number:
- 710-32-14358001
- Availability:
- In Stock - Ships same or next business day.
$78.67 $67.49 -
OEM MerCruiser 4" Ceramic Coated Riser/Elbow 807988A03
Mercury Marine / Quicksilver
$334.75 $286.99OEM 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 exhaust manifold (model year 2002 and older). It...- Part Number:
- 710-807988A03
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- Ceramic
$334.75 $286.99 -
OEM MerCruiser Exhaust Center Riser mounting bolt (REMOTE OIL FILTER)
Mercury Marine / Quicksilver
$16.92 $13.80OEM MerCruiser Exhaust Riser mounting bolts (extended) (63/4") Fits 4.3 , small block, and big block MerCruiser engines with 4" Riser Elbows Will not work for dry joint (2002+) ONLY for riser mounted remote oil filter!usually 2x per engine You will...- Part Number:
- 710-10-44387
- Availability:
- In Stock - Ships same or next business day.
- Fitment:
- .376-16 x 6.750
$16.92 $13.80
74-454-502 Exhaust Parts
NuWave Marine has the quality Mercruiser 7.4-454-502 exhaust parts you need to keep your boat’s engine from breaking down. If one part of the Mercruiser exhaust system is compromised, other parts will also get damaged. Whether it’s one faulty component that needs to be replaced or you're looking to rebuild the whole system, we’ve got all the parts and accessories required, from exhaust manifolds to spacer kits, riser elbows, Y-pipes, and more.
The consensus on exhaust manifolds and risers is that they can last about five years in saltwater applications. In freshwater, however, the lifespan of the exhaust system can rise to 10 years. Most engine manufacturers do not provide an estimate on how long these parts will last. However, with meticulous inspections and proper servicing, you may be able to extend the usual lifespan of your exhaust manifold and riser by 2-3 years.
Mercruiser 7.4 exhaust manifold gasket and other parts
At NuWave Marine, we recommend inspecting your exhaust manifold, gaskets, and riser every year. Look out for signs of heavy corrosion between the manifold and riser and under the exhaust manifold. If the paint is peeling out, then your riser and manifold could be overheating. If you notice any of these signs, your exhaust system likely requires some replacement parts.
Ready to replace worn-out exhaust manifolds? We’ve got the premium parts to do it. Whether you need a Mercruiser 454-502 7.4l head bolt, Mercruiser 7.4 exhaust risers spacer elbows, a “T” fitting for under the manifold, an exhaust bellows, or any other part, you can depend on us for consistent quality, fast shipping, and unmatched customer service.
Mercruiser 7.4 454 502 exhaust manifold & riser kit
We’ve got spacer kits and more to help you replace and assemble your engine components. The different components in a kit are already engineered to fit together with precision. Mercruiser 7.4-454-502 exhaust kits contain risers, manifolds, gaskets, studs, and spacers to efficiently and cost-effectively rebuild your entire exhaust system. 7.4-454-502 Y pipe parts that come with exhaust flappers to complete the setup.
Choose NuWave Marine for Your Premium Exhaust Parts
NuWave Marine has provided boat owners with premium replacement parts for over four decades. We are ready to use our vast knowledge and experience to help you find the right exhaust part for your engine. Contact us today if you have any questions about which parts you need to keep your boat’s engine purring smoothly for this season and beyond.