Sierra Engine Coupler - SIE-18-21751

Sierra 18-21751 Engine Coupler for OMC, Volvo

Sierra replacement engine coupler for OMC and Volvo Penta engines. All Sierra engine parts are manufactured to meet or exceed OEM requirements.

Fits:

OMC 2.5L (1986), 3.0L (1986-90), 4.3L/5.0L/5.7L (1986) KW & KWB Suffix only.

OMC 7.4L (1990-98), 8.2L (1992-93, 1998)

Interchangeable With:

Volvo

3853962

OMC Stern Drive

3853962

986338

983902

Frequently Asked Questions

• What is the Sierra 18-21751 Engine Coupler used for? The Sierra 18-21751 is a replacement engine coupler for specified OMC and Volvo Penta marine engines. Sierra states that its engine parts are manufactured to meet or exceed OEM requirements.
• Which OMC engines does the Sierra 18-21751 Engine Coupler fit? The Sierra 18-21751 fits OMC 2.5L engines from 1986; 3.0L engines from 1986–1990; and 4.3L, 5.0L, and 5.7L engines from 1986 with KW and KWB suffixes only. It also fits OMC 7.4L engines from 1990–1998 and 8.2L engines from 1992–1993 and 1998.
• Does the Sierra 18-21751 Engine Coupler fit Volvo Penta engines? The product is described as a replacement engine coupler for OMC and Volvo Penta engines. The listed Volvo interchangeable part number is 3853962. Verify your engine application and existing part number before purchasing.
• What part numbers is the Sierra 18-21751 Engine Coupler interchangeable with? The Sierra 18-21751 is listed as interchangeable with Volvo 3853962 and OMC Stern Drive part numbers 3853962, 986338, and 983902. Compare your existing part number with these listings to help verify the correct engine coupler for your application.
• Does the Sierra 18-21751 fit all OMC 4.3L, 5.0L, and 5.7L engines? No. The listed application for OMC 4.3L, 5.0L, and 5.7L engines is specifically 1986 models with KW and KWB suffixes only. Confirm both the engine year and applicable suffix before using this engine coupler.