Name: Exhaust Spacer Riser Block Extension 3 Inch Mercruiser Log End Riser Osco 1851
Brand: Osco Motors
SKU: 11920
Price: 59.99 USD
Availability: OutOfStock

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177 Fulford Dr.
Harkers Island, NC 28531
(252) 504-3355

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Home :: Mercruiser Inboards :: Exhaust System :: Exhaust Spacers, Blocks :: Exhaust Spacer Riser Block Extension 3 Inch Mercruiser Log End Riser Osco 1851

Exhaust Spacers, Blocks

Product 2/19

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Part #: OSC1851

Limited Availability
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Limited Availability - Please Call

Additional fees for this product
Eastern States Risers/Elbows/Spacers Shipping States this fee will apply to. AL, CT, DC, DE, FL, GA, IL, IN, KY, LA, MA, MD, ME, MI, MS, NC, NH, NJ, NY, OH, PA, RI, SC, TN, VA, VT, WI, WV, ,	$12.00
Western States Risers/Elbows/Spacers Shipping States this fee will apply to. AR, AZ, CA, CO, IA, ID, KS, MN, MO, MT, ND, NE, NM, NV, OK, OR, SD, TX, UT, WA, WY, HI, ,	$18.00

3" Spacer used on Mercruisers with Log Style Manifolds. It goes between the Manifold & the Riser.

The riser mounting pad is 3-3/4 x 4 Inches. Does not fit Center Rise Exhaust Systems!!!

It fits Osco # 7234B, Osco # 7235B, Osco # 5603 & Osco # 5604 manifolds, uses Osco # 6351-G gaskets

Replaces: Mercury Quicksilver # 61851; Barr # MC-20-61851A2; GLM # 50330; Sierra # 18-1906; Mallory # 9-40532

SIE18-1906

Brand	Model	Year	HP	Serial #	Notes
Mercruiser Stern Drive	470 2 BBL I/L4	1982
Mercruiser Stern Drive	470 2 BBL I/L4	1980
Mercruiser Stern Drive	470 2 BBL I/L4	1981
Mercruiser Stern Drive	470 MIE 224 I/L4	1980
Mercruiser Stern Drive	470 MIE 224 I/L4	1981