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Sierra 18-21751 Engine Coupler for OMC and Volvo Penta Stern Drives

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

18-21751
21 reviews
03/12/2036 9:33 AM
Sale Price

$261.01

In Stock (8)

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Usually delivered within 2 days

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Product Details

The Sierra 18-21751 Engine Coupler is a premium replacement part designed for OMC and Volvo Penta marine stern drive applications. This coupler connects the engine crankshaft to the drive unit, transmitting power efficiently while absorbing vibration and compensating for minor misalignment.

Key Features:

  • Designed for GM large crankshaft diameter applications with 6 bolt holes
  • Bolt mounting pattern approximately 3.5 inches center-to-center
  • Manufactured to meet or exceed OEM specifications for reliable performance
  • Direct replacement for multiple OEM part numbers
  • Quality construction ensures long-lasting durability in marine environments

OEM Cross-Reference Numbers: Replaces OMC 3853962, 983902, 986338 and Volvo Penta 3853962-3. This coupler is engineered to deliver the same quality and performance as the original equipment part while offering excellent value.

so easy!

Great

Autoplicity had the tire brand and size I was seeking. The tires arrived after a 5 day Free Shipping period, from the opposite side of the United States. Installed the day of reciept and so far so good. The tires were fresh indicating proper storage facilities are in place even though they were manufactured in late 2017...great job overall. Thanks

The only flaw was that the search engine didn't find my tool. Had to look it up on Google and type in the part number. But still, fast and easy.

Fine

Great /fast

very easy ordering

Ordered the Perrin Reverse Lockout Lever for my 2008 Subaru Legacy GT Spec.B. Order came in a reasonable amount of time. Found it to be the most inexpensive on Autoplicity.

i hope the 2 day delivery is accurate because that would be great.

They have the best prices on the net hands down. I saved 40 bucks buying through them and not only that but my item was shipped promptly. I would recommend using them i know im coming back.

fast shipping and great communication my order was shipped the same day thanks autoplicity

Great product - prompt service - helpful customer relations - will use them again and recommend them to others

Low Prices...... Fast Shipping.... Great Transaction... Thanks so much!!!

Great

so far so good

Great transaction. Fantastic prices, beat everyone elses.

Good

I had never heard of Autoplicity before placing this order. I found Autoplicity via Google and decided I'd give them a try as they were the cheapest option. <br>Autoplicity did have the lowest price. The order was shipped promptly and got to me 2 days after ordering and the next day after it was shipped. I am very happy with this purchasing experience and would purchase from Autoplicity again without any hesistation.<br>

Ordered an EGR bug shield. After a short delay due to the Christmas holiday I called and customer service quickly tracked it down and it showed up a few days later. Best price on the internet!

Please send it in the Black color

easy to find product best price around

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