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Mercruiser 74-454-502 Exhaust Parts

Mercruiser 74-454-502 Exhaust Parts

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  • MerCruiser Quicksilver Lower Exhaust Tube Y-Pipe Bellow  32-14358001

    MerCruiser Quicksilver Lower Exhaust Tube Y-Pipe Bellow 32-14358001

    Mercury Marine / Quicksilver

    $78.67 $67.49
    MerCruiser 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
    Qty in Cart: 0
    Quantity:
    Price:
    $78.67 $67.49
    Buy this product to earn $2.02 in Store Credit
    Subtotal:
  • OEM MerCruiser 4" Ceramic Coated Riser/Elbow  807988A03

    OEM MerCruiser 4" Ceramic Coated Riser/Elbow 807988A03

    Mercury Marine / Quicksilver

    $334.75 $286.99
    OEM 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
    Qty in Cart: 0
    Quantity:
    Price:
    $334.75 $286.99
    Buy this product to earn $8.61 in Store Credit
    Subtotal:
  • OEM MerCruiser Exhaust Center Riser mounting bolt (REMOTE OIL FILTER)

    OEM MerCruiser Exhaust Center Riser mounting bolt (REMOTE OIL FILTER)

    Mercury Marine / Quicksilver

    $16.92 $13.80
    OEM 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
    Qty in Cart: 0
    Quantity:
    Price:
    $16.92 $13.80
    Buy this product to earn $0.41 in Store Credit
    Subtotal:
  • Sierra MerCruiser Big Block V8 Exhaust Manifold 7.4 454 502 807078t10 807078t08 18-19571 18-1957-2

    Sierra MerCruiser Big Block V8 Exhaust Manifold 7.4 454 502 807078t10 807078t08 18-19571 18-1957-2

    Sierra

    $375.19 $272.47
    Sierra 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 $272.47
    Qty in Cart: 0
    Quantity:
    Price:
    $375.19 $272.47
    Buy this product to earn $8.17 in Store Credit
    Subtotal:
  • OEM MerCruiser Exhaust Bellows Hose Clamp 710-54-815504372

    OEM MerCruiser Exhaust Bellows Hose Clamp 710-54-815504372

    Mercury Marine / Quicksilver

    $15.90 $11.85
    OEM 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 $11.85
    Qty in Cart: 0
    Quantity:
    Price:
    $15.90 $11.85
    Buy this product to earn $0.36 in Store Credit
    Subtotal:
  • Sold out - Special order may be available, please call 856-232-6969 ext1
    MerCruiser straight hose fitting 22-866725 22-863804

    MerCruiser straight hose fitting 22-866725 22-863804

    Mercury Marine / Quicksilver

    $17.60 $13.11
    MerCruiser 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.
    Qty in Cart: 0
    Price:
    $17.60 $13.11
    Buy this product to earn $0.39 in Store Credit
    Subtotal:
  • NEW OEM MerCruiser V6 V8 Exhaust Riser spacer kit 6" 6 inch 93322A12

    NEW OEM MerCruiser V6 V8 Exhaust Riser spacer kit 6" 6 inch 93322A12

    Mercury Marine / Quicksilver

    $690.14 $603.72
    NEW 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 $603.72
    Qty in Cart: 0
    Quantity:
    Price:
    $690.14 $603.72
    Buy this product to earn $18.11 in Store Credit
    Subtotal:
  • OEM MerCruiser Exhaust Y-pipe with Flappers 815786 8M0115149 807130a4 807130c 861229c

    OEM MerCruiser Exhaust Y-pipe with Flappers 815786 8M0115149 807130a4 807130c 861229c

    Mercury Marine / Quicksilver

    $956.50 $821.46
    New 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 $821.46
    Qty in Cart: 0
    Quantity:
    Price:
    $956.50 $821.46
    Buy this product to earn $24.64 in Store Credit
    Subtotal:
  • Sold out - Special order may be available, please call 856-232-6969 ext1
    Sierra MerCruiser 3" Exhaust Riser Elbow MC-20-55538 98504A3 18-1970-1 18-1970-2

    Sierra MerCruiser 3" Exhaust Riser Elbow MC-20-55538 98504A3 18-1970-1 18-1970-2

    Sierra

    $313.69 $214.12
    Sierra 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
    Qty in Cart: 0
    Price:
    $313.69 $214.12
    Buy this product to earn $6.42 in Store Credit
    Subtotal:
  • OEM MerCruiser 454 or 502 Ceramic Coated Exhaust Manifold 807078T10 89011

    OEM MerCruiser 454 or 502 Ceramic Coated Exhaust Manifold 807078T10 89011

    Mercury Marine / Quicksilver

    $540.86
    OEM 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
    Qty in Cart: 0
    Quantity:
    Price:
    $540.86
    Buy this product to earn $16.23 in Store Credit
    Subtotal:
  • OEM MerCruiser HD-coated 7.4 / 454 / 502 Exhaust Manifold and Riser kit 807078T10 807988A03

    OEM MerCruiser HD-coated 7.4 / 454 / 502 Exhaust Manifold and Riser kit 807078T10 807988A03

    Mercury Marine / Quicksilver

    $1,751.22 $1,675.70
    OEM 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
    Qty in Cart: 0
    Price:
    $1,751.22 $1,675.70
    Buy this product to earn $50.00 in Store Credit
    Subtotal:
  • Sold out - Special order may be available, please call 856-232-6969 ext1
    MerCruiser Down Elbows for 3 and 6 inch spacers 14801A1 14801A 1

    MerCruiser Down Elbows for 3 and 6 inch spacers 14801A1 14801A 1

    Mercury Marine / Quicksilver

    $600.43 $517.56
    MerCruiser 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.
    Qty in Cart: 0
    Price:
    $600.43 $517.56
    Buy this product to earn $15.53 in Store Credit
    Subtotal:
  • OEM MerCruiser Exhaust Riser Spacer Kit 3"  93320A14 (for SS elbows only)

    OEM MerCruiser Exhaust Riser Spacer Kit 3" 93320A14 (for SS elbows only)

    Mercury Marine / Quicksilver

    $388.50 $344.34
    NEW 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 $344.34
    Qty in Cart: 0
    Quantity:
    Price:
    $388.50 $344.34
    Buy this product to earn $10.33 in Store Credit
    Subtotal:
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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.