Mercruiser 74-454-502 Exhaust Parts
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
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 $67.49Qty in Cart: 0Quantity:Price:$78.67 $67.49Buy this product to earn $2.02 in Store CreditSubtotal: -
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 $286.99Qty in Cart: 0Quantity:Price:$334.75 $286.99Buy this product to earn $8.61 in Store CreditSubtotal: -
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 $13.80Qty in Cart: 0Quantity:Price:$16.92 $13.80Buy this product to earn $0.41 in Store CreditSubtotal: -
Sierra MerCruiser Big Block V8 Exhaust Manifold 7.4 454 502 807078t10 807078t08 18-19571 18-1957-2
Sierra
$375.19 $272.47Sierra Replacement Manifold Kit for MerCruiser Big Block V8 454 / 502 Engines 18-1957-2 Comparable Part Numbers: • Osco: 9011A • GLM: 51240 • MerCruiser: 89011A8 , 807078T08 , 807078T10 ,...- Part Number:
- 47-19572
- Availability:
- In Stock - Ships same or next business day.
$375.19 $272.47Qty in Cart: 0Quantity:Price:$375.19 $272.47Buy this product to earn $8.17 in Store CreditSubtotal: -
OEM MerCruiser Exhaust Bellows Hose Clamp 710-54-815504372
Mercury Marine / Quicksilver
$15.90 $11.85OEM MerCruiser Exhaust Bellows Hose Clamp 710-54-815504372 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH- Part Number:
- 710-54-815504372
- Availability:
- In Stock - Ships same or next business day.
$15.90 $11.85Qty in Cart: 0Quantity:Price:$15.90 $11.85Buy this product to earn $0.36 in Store CreditSubtotal: -
MerCruiser straight hose fitting 22-866725 22-863804
Mercury Marine / Quicksilver
$17.60 $13.11MerCruiser straight hose fitting 22-866725 22-863804 22-866725 replaces 22-863804 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold...- Part Number:
- 710-22-866725
- Availability:
- In Stock - Ships same or next business day.
$17.60 $13.11 -
NEW OEM MerCruiser V6 V8 Exhaust Riser spacer kit 6" 6 inch 93322A12
Mercury Marine / Quicksilver
$690.14 $603.72NEW OEM MerCruiser V6 V8 Exhaust Riser spacer kit 6" 6 inch 93322A12 • For all MerCruiser center riser manifolds • All V6 and all V8 engines from early 80+ • New bolts, gaskets, 6 inch high spacers, nuts and washers Will...- Part Number:
- 710-93322A12
- Availability:
- In Stock - Ships same or next business day.
$690.14 $603.72Qty in Cart: 0Quantity:Price:$690.14 $603.72Buy this product to earn $18.11 in Store CreditSubtotal: -
OEM MerCruiser Exhaust Y-pipe with Flappers 815786 8M0115149 807130a4 807130c 861229c
Mercury Marine / Quicksilver
$956.50 $821.46New OEM Y-Pipe Works with many mercruiser engines!part number 807130a4 casting number 807130-c or 861229c Replaces 815786 8M0115149 807130a4 807130c 861229c exhaust Flappers included !- Part Number:
- 710-8M0115149
- Availability:
- In Stock - Ships same or next business day.
$956.50 $821.46Qty in Cart: 0Quantity:Price:$956.50 $821.46Buy this product to earn $24.64 in Store CreditSubtotal: -
Sierra MerCruiser 3" Exhaust Riser Elbow MC-20-55538 98504A3 18-1970-1 18-1970-2
Sierra
$313.69 $214.12Sierra replacement 3" Exhaust elbow for MerCruiser MerCruiser 175-205 GM 229/262 CID V6 (1983+) MerCruiser 200-320 GM 305/350/377 CID V8 Small Block (1983+) MerCruiser 330-370 GM 454/502 CID V8 Big Block (1981+) Comparable Part...- Part Number:
- 47-19702
- Availability:
- In Stock - Ships same or next business day.
- MPN:
- 18-19701
$313.69 $214.12 -
OEM MerCruiser 454 or 502 Ceramic Coated Exhaust Manifold 807078T10 89011
Mercury Marine / Quicksilver
$540.86OEM MerCruiser 454 or 502 Ceramic Coated Manifold 807078T10 89011 Fits 1981 and up GM 454 d 502 Port or Starboard Side. Replaces part numbers 89011A8, 807078A2, 807078A4, 807078A6, 807078T09 Can be used for freshwater or saltwater installations...- Part Number:
- 710-807078T10
- Availability:
- In Stock - Ships same or next business day.
- Coating:
- Ceramic
- CustomMPN:
- 807078T10
$540.86 -
OEM MerCruiser HD-coated 7.4 / 454 / 502 Exhaust Manifold and Riser kit 807078T10 807988A03
Mercury Marine / Quicksilver
$1,751.22 $1,675.70OEM 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)
$1,751.22 $1,675.70 -
MerCruiser Down Elbows for 3 and 6 inch spacers 14801A1 14801A 1
Mercury Marine / Quicksilver
$600.43 $517.56MerCruiser Down Elbows for 3 and 6 inch spacers 14801A1 14801A 1 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH- Part Number:
- 710-14801A 1
- Availability:
- In Stock - Ships same or next business day.
$600.43 $517.56 -
OEM MerCruiser Exhaust Riser Spacer Kit 3" 93320A14 (for SS elbows only)
Mercury Marine / Quicksilver
$388.50 $344.34NEW OEM MerCruiser 3 inch spacer kit ONLY WORKS WITH Stainless Steel ELBOWS! Includes everything in the photo: • bolts • gaskets • 3 inch riser blocks • nuts and washers- Part Number:
- 710-93320A14
- Availability:
- In Stock - Ships same or next business day.
$388.50 $344.34Qty in Cart: 0Quantity:Price:$388.50 $344.34Buy this product to earn $10.33 in Store CreditSubtotal:
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.