Engine Coupler - 18-21752-1 - Sierra
Price: $192.66
Save: $80.33
(29% Off $272.99)
Part # 18-21752-1
2nd Day Air for $2 More Eligible
SHIPS TOMORROW!* if ordered in 13 hrs 46 mins.
No Reviews
This item is found in the following Product Families
Fits: Volvo Penta 4.3L (1986-98), 5.0L (1986-88, 1998), 5.7 (1986-92,1994, 1996-98)
Replaces OEM part #
  • Volvo Penta 3858437-1
Need coupler for 5.0GLPEFS Volvo penta what part number should I order?
18-21752-1 is the correct part number for your motor.

My engine isn't listed but I think this may be what I need for a 2001 4.3GL PEFS. Serial?
Yes this is what you need for your application.

Which coupler is correct for a 1988, 4.3 V-6?
We will need to know engine model number or at least make. This works with Volvo Penta 4.3L (1986-98).

I have an 88 omc King cobra set up 350. I am putting an older style 350 in it and it has a larger crank bolt pattern. The engine coupler will not bolt up. It has a smaller bolt pattern than the crank I have now... Help ASAP!?
Well we only have the ability to match up parts to specific engines. We do not have tech services to recommend conversions like that. You will need to contact your local OMC dealer for specific guidance.

Is this replacement part for a 1987 5.7 with cobra out drive?
Yes, this should work just fine with that application, among a few other Volvo Penta or OMC/Cobra applications.

Ask a question
Question & Answer Guidelines
This product ships in 1 business day.
Add to Cart and enter your Postal Code to determine the shipping charges and estimated delivery date.
Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies
Do you need Professional Installation? has teamed with a national network of independent installers that are ready to handle your installation needs.
Find your local Amtech dealer: