-20% sale
Sierra Not Qualified for Free Shipping Sierra Engine Coupler #18-21753
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Sierra Sierra Engine Coupler #18-21753 $482.87 $602.68
Sierra 18-21753 Engine CouplerEngine CouplerOEM Interchange:OMC: 3853862VOLVO: 3853862-5VOLVO: 985727Sierra Engine Coupler #18-21753Normalized SKU: 1821753UPC Code: 808282186388
-18% sale
Sierra Not Qualified for Free Shipping Sierra Engine Coupler #18-21754
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Sierra Sierra Engine Coupler #18-21754 $762.70 $923.58
Sierra 18-21754 Engine CouplerSierra Engine Coupler #18-21754Normalized SKU: 1821754UPC Code: 808282286453
Sold out -22% sale
Sierra Not Qualified for Free Shipping Sierra Engine Coupler #18-2321
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Sierra Sierra Engine Coupler #18-2321 $168.07 $213.46
Sierra 18-2321 Engine CouplerEngine CouplerOEM Interchange:MERCURY MARINE: 12632A6Sierra Engine Coupler #18-2321Normalized SKU: 182321UPC Code: 808282100872
Sold out -22% sale
Sierra Not Qualified for Free Shipping Sierra Engine Coupler #18-2323
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Sierra Sierra Engine Coupler #18-2323 $291.06 $369.66
Sierra 18-2323 Engine CouplerEngine CouplerOEM Interchange:MERCURY MARINE: 18643A5Sierra Engine Coupler #18-2323Normalized SKU: 182323UPC Code: 808282100889
Sold out -17% sale
Sierra Engine Coupler #18-2412-1 Sierra Not Qualified for Free Shipping Sierra Engine Coupler #18-2412-1
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Sierra Sierra Engine Coupler #18-2412-1 $55.14 $66.17
Sierra 18-2412-1 Engine Coupler Fits: MCM 4.5L MPI & GM V-8 engines with Bravo drive Round engine coupler for standard Bravo applications Fits Mercruiser model 5.0L Gen+ Bravo engines with serial number range L015751 &up Fits Mercruiser model 350 MAG MPI Horizon Bravo engines from 2002 to 2007 with serial number range M300000-A299999 Fits Mercruiser model MX 6.2L MPI Horizon engines from 2002 to 2007 with serial number range M300000-A299999 Replaces Mercury 18311A17, 861523A9, 8M0098795 Replaces Mallory 9-72503 Normalized SKU: 1824121UPC Code: 808282375058
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Engine Coupler #18-2413
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Sierra Sierra Engine Coupler #18-2413 $453.06 $565.48
Sierra 18-2413 Engine CouplerEngine CouplerOEM Interchange:MERCURY MARINE: 69354A2Sierra Engine Coupler #18-2413Normalized SKU: 182413UPC Code: 808282111618
-20% sale
Sierra Not Qualified for Free Shipping Sierra Engine Coupler #18-2414
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Sierra Sierra Engine Coupler #18-2414 $567.51 $708.32
Sierra 18-2414 Engine CouplerEngine CouplerOEM Interchange:MERCURY MARINE: 97432A2Sierra Engine Coupler #18-2414Normalized SKU: 182414UPC Code: 808282111625
Sold out
Sierra Not Qualified for Free Shipping Sierra Engine Coupler for OMC Cobra Sterndrive #18-21755
Sierra Sierra Engine Coupler for OMC Cobra Sterndrive #18-21755 $0.00
Sierra 18-21755 Engine CouplerOnly available from Sierra, this new engine coupler (18-21755) fits OMC Cobra sterndrive applications using a 2.3L Ford engine between 1987 and 1990. This part is only available from Sierra. It is a direct OEM replacement and is in stock and ready to ship. The product is backed by Sierra's industry leading warranty.OEM Part Number: 984629OEM Interchange:OMC: 984629Sierra Engine Coupler for OMC Cobra Sterndrive 18-21755Normalized SKU: 1821755UPC Code: 808282277390
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Engine Coupler Kit #18-2175
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Sierra Sierra Engine Coupler Kit #18-2175 $39.35 $47.21
Sierra 18-2175 Engine CouplerEngine Coupler KitOEM Interchange:MERCURY MARINE: 18643A7Sierra Engine Coupler Kit #18-2175Normalized SKU: 182175UPC Code: 030999562487
Sold out -22% sale
Sierra Not Qualified for Free Shipping Sierra Engine Coupler Kit #18-2195
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Sierra Sierra Engine Coupler Kit #18-2195 $213.61 $271.30
Sierra 18-2195 Engine CouplerEngine Coupler KitOEM Interchange:MERCURY MARINE: 12632A7Sierra Engine Coupler Kit #18-2195Normalized SKU: 182195UPC Code: 030999562531
-22% sale
Sierra Not Qualified for Free Shipping Sierra Engine Coupler OMC/Volvo #18-21752-1
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Sierra Sierra Engine Coupler OMC/Volvo #18-21752-1 $310.48 $394.34
Sierra 18-21752-1 Engine CouplerReplacement Engine Coupler replaces: OMC 3853917 replaces: OMC 984290 replaces: OMC 3858437 replaces: OMC 986120 replaces: Volvo 3858437-1 OEM Interchange:OMC: 3853917OMC: 3858437OMC: 984290OMC: 986120VOLVO: 3858437-1Sierra Engine Coupler OMC/Volvo #18-21752-1Normalized SKU: 18217521UPC Code: 808282226855
Sold out -17% sale
Sierra Qualifies for Free Shipping Sierra Engine Flusher Rectangular Cups #18-8998
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Sierra Sierra Engine Flusher Rectangular Cups #18-8998 $13.49 $16.10
Sierra 18-8998 Motor FlushersEngine Flusher - Rectangular Cups #18-8998Sierra Engine Flusher - Rectangular Cups #18-8998Normalized SKU: 188998UPC Code: 808282265199
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Engine Mount #18-4005
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Sierra Sierra Engine Mount #18-4005 $26.95 $32.17
Sierra 18-4005 Motor MountsEngine MountOEM Interchange:VOLVO: 833950Sierra Engine Mount #18-4005Normalized SKU: 184005UPC Code: 808282188580
-17% sale
Sierra Not Qualified for Free Shipping Sierra Engine Mount Bolt Kit #18-2140
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Sierra Sierra Engine Mount Bolt Kit #18-2140 $34.74 $41.46
Sierra 18-2140 BoltsEngine Mount Bolt KitSierra Engine Mount Bolt Kit #18-2140Normalized SKU: 182140UPC Code: 808282243357
-17% sale
Sierra Not Qualified for Free Shipping Sierra Engine Mount Bolt Kit #18-2141
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Sierra Sierra Engine Mount Bolt Kit #18-2141 $30.13 $35.96
Sierra 18-2141 BoltsEngine Mount Bolt KitOEM Interchange:MERCURY MARINE: 10-97934A1Sierra Engine Mount Bolt Kit #18-2141Normalized SKU: 182141UPC Code: 808282257705
-20% sale
Sierra Not Qualified for Free Shipping Sierra Engine Puller Universal #18-79817
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Sierra Sierra Engine Puller Universal #18-79817 $94.12 $116.84
Sierra 18-79817 Engine ToolsSierra Engine Puller Universal #18-79817Normalized SKU: 1879817UPC Code: 808282343170
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Engine Stop Switch #18-65450
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Sierra Sierra Engine Stop Switch #18-65450 $49.97 $59.96
Sierra 18-65450 SwitchesSierra Engine Stop Switch #18-65450Normalized SKU: 1865450UPC Code: 808282342708
-17% sale
Sierra Not Qualified for Free Shipping Sierra Engine Timing Belt #18-15130
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Sierra Sierra Engine Timing Belt #18-15130 $74.69 $89.62
Sierra 18-15130 Timing Belts Features: Meets or Exceeds OEM Belt Specifications Modified Curvilinear Tooth Profile For Direct OE Fitment/Replacement Chemical and Contaminant Resistance for long life Additional Details: Material: Nitrile Const. For Maximum Durability & Fiberglass Tension Member For Excellent Flex Behavior Replacement Recommendation: Interval of 5 Years or 1000 Hours of Use Yamaha Outboard 6C5-46241-00-00 Sierra Engine Timing Belt #18-15130Normalized SKU: 1815130UPC Code: 808282371227
-20% sale
Sierra Engine Timing Belt #18-15131
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Sierra Sierra Engine Timing Belt #18-15131 $73.04 $90.67
Sierra 18-15131 Timing Belts Features: Meets or Exceeds OEM Belt Specifications Modified Curvilinear Tooth Profile For Direct OE Fitment/Replacement Chemical and Contaminant Resistance for long life Additional Details: Material: Nitrile Const. For Maximum Durability & Fiberglass Tension Member For Excellent Flex Behavior Replacement Recommendation: Interval of 5 Years or 1000 Hours of Use Yamaha Outboard 67F-46241-00-00 Sierra Engine Timing Belt #18-15131Normalized SKU: 1815131UPC Code: 808282371234
-22% sale
Sierra Engine Timing Belt #18-15132
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Sierra Sierra Engine Timing Belt #18-15132 $282.25 $358.47
Sierra 18-15132 Timing Belts Features: Meets or Exceeds OEM Belt Specifications Modified Curvilinear Tooth Profile For Direct OE Fitment/Replacement Chemical and Contaminant Resistance for long life Additional Details: Material: Nitrile Const. For Maximum Durability & Fiberglass Tension Member For Excellent Flex Behavior Replacement Recommendation: Interval of 5 Years or 1000 Hours of Use Yamaha Outboard 6P2-46241-00-00 6P2-46241-01-00 6P2-46241-02-00 Sierra Engine Timing Belt #18-15132Normalized SKU: 1815132UPC Code: 808282371241

Frequently Asked Questions

First Choice Marine is an online marine retailer carrying a diverse line of marine parts and accessories and related items from industry-respected and demanded manufacturers and suppliers. Through our diverse distributor network, we are able to access over 150,000 items, including our current site inventory, new products being added, and special order items. If you need it on your boat... we are your one-stop shop!

Yes, we offer FREE Shipping on most orders over $149 to US-48*.

Each product displays a shipping status message, just above the item price. Below is the meaning for each of these codes.

  • Qualifies for Free Shipping: This item qualifies for free shipping when the order is $149+
  • Qualifies for Free Ground Shipping: This item qualifies for free ground shipping when the order is $149+.
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Below the price of the item, on the product page, there is a message indicating the availability of the product.

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