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Home Shop By Engine Parts & Anodes Engine Components Manifolds & Risers Sierra 18-1976-2 | 18-1976-1 Riser with 7° 4" OD Nipple for V6, V8 Applications
Sierra 18-1976-2 | 18-1976-1 Riser with 7° 4" OD Nipple for V6, V8 Applications
Sierra

Sierra 18-1976-2 | 18-1976-1 Riser with 7° 4" OD Nipple for V6, V8 Applications

SKU
Save 24% Save 24%
$299.20
$299.20 - $299.20
$299.20
$225.99
$225.99 - $225.99
$225.99
Availability In Stock In Store 1 Online Only - This item is stored in an external warehouse. Online orders will be shipped direct to the shipping address or available for in-store pickup typically within 1-3 days.
Ship same day | Standard by 2PM EST | Express by 1PM EST
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Substitute Options

Mercury 807988A03 | Quicksilver Exhaust Manifold Elbow
Mercury 807988A03 | Quicksilver Exhaust Manifold Elbow $348.49 In Stock
Mercury 807988Q03 | Quicksilver Exhaust Manifold Elbow for V6 and V8 MerCruiser Sterndrive or Inboard Engines Made by
Mercury 807988Q03 | Quicksilver Exhaust Manifold Elbow for V6 and V8 MerCruiser Sterndrive or Inboard Engines Made by $259.99 Out of Stock
Barr Marine MC-20-44354 | Direct Replacement Exhaust Riser | 4"
Barr Marine MC-20-44354 | Direct Replacement Exhaust Riser | 4" $272.99 In Stock

30-Day Return Policy | See Details.

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Sierra 18-1976-2 Riser 4" 7° Exhaust replacement Magnum Riser fits Mercury Marine MCM/MIE GM V-6 & V-8 with center rise outlet exhaust manifold (2002 & older)
CLOSE-OUT/FINAL SALE/NO-RETURNS.
Features:
  • Exhaust Outlet Angle: 7°

  • Exhaust Outlet Hose Size: 4"

  • Supplied with Riser to manifold restrictor gasket and (4) Riser Mounting Bolts (5-3/4"-LONG)

    • |

    Replace freeze damaged or corroded exhaust risers easily with a complete installation kit

    For 50 years Sierra has been producing parts engineered to meet or exceed the specifications of marine engine manufacturers and has gained the confidence of engine manufacturers and boat builders to a point of supplying them with OEM parts. Boaters and technicians can be assured a Sierra part will fit right the first time and restore function to OEM specifications.

    Sierra riser kits include all you will need to for a quick installation. Each riser is an exact OEM match and is leak tested for quality assurance. Mating surfaces are CNC machined to provide the best possible seal without additional preparation. Precision castings feature uniform wall thickness and are primed and painted to stand up to the marine environment. Look no further than a Sierra kit for quick out of the box installation.

    Key Features

    • Meets or exceeds manufacturer specifications
    • 7° angle riser for 4" exhaust applications
    • Risers can be used on port or starboard side
    • Recommended for saltwater use
    • Complete kit includes riser, exhaust manifold gaskets, plugs and bolts
    • Compatible with MCM/MIE GM based V-6 and V-8 engines manufactured after 2002 with center rise outlet exhaust manifolds
    • Backed by SeaStar Solutions Limited Two-Year Warranty

    The Sierra Engine Parts Selector

    In addition to exhaust manifolds, we offer a wide variety of other engine parts manufactured by Sierra. To see if we have the part you need, see our Engine Parts Selector, where you can search by engine make, serial number and model or year of manufacture.

    Application OEM Part Number
    Barr MC-20-44354
    GLM 51140
    HGE 4354
    Mallory 9-40559
    MerCruiser Sterndrive 44354A3, 807914A1, 44354A9, 44354A10, 44354A13, 807988A2, 807988A03
    Osco 4354
    |

    • 7° 4" OD Nipple
    • Replaces: Mercury Marine 44354A3
    • Replaces: Mercury Marine 807914A1
    • Replaces Mercruiser 807988A2
    • Comes w/ 18-0897, 18-4263 & 18-4258

    Brand: Sierra

    WARNING: This product MAY expose you to chemicals, which are known to the State of California to cause cancer, birth defects and/or other reproductive harm. For more information go to www.p65warnings.ca.gov

    Weight:
    Dimensions: x x
    Barcode:

    Backorder Policy: Occasionally, due to demand or supplier delays, some items may be temporarily out of stock or non-stock items. To ensure you can still get the products you need, you can order items even when they're out of stock. Our sales team will update you with the shipping lead time. Once back in stock, we promptly ship your item, and if your order includes both in-stock and backordered items, we may split the shipment. You can cancel your backorder before shipment, and request a refund to original payment method. For any inquiries, contact us at sales@freeportmarine.com.

    No documentation available for this item.