Sierra Stud Kit 18-72510 for Mercruiser Coupler to Flywheel

The Sierra Stud Kit, part number 18-72510, is a coupler-to-flywheel stud kit built for Mercruiser sterndrive applications. This kit supplies the studs used to secure the flywheel coupler assembly, a connection point that must stay tight and properly torqued to transmit engine power to the drive unit without slipping or working loose under load. Sierra manufactures the kit to match the fit and thread engagement of the original coupler-to-flywheel hardware it is designed to replace, making it a straightforward drop-in for routine maintenance, coupler service, or flywheel replacement work.

Because this is a small, precision hardware kit, it ships compact and lightweight, and is intended to be installed with standard hand tools during coupler or flywheel service. Boat owners and marine technicians use it to restore the coupler-to-flywheel joint to proper specification rather than reusing worn or corroded studs.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-72510
• Fits: Mercruiser Coupler to Flywheel
• Product Dimensions: 0.39 x 0.39 x 0.39 inches
• Weight: 0.12 pounds
• Finish: Machined
• UPC: 808282342746
• Category: Engine Parts

Fitment

• Mercruiser Coupler to Flywheel

Frequently Asked Questions

What does the Sierra 18-72510 stud kit fit? The Sierra 18-72510 stud kit is designed to fit Mercruiser coupler-to-flywheel applications, supplying the hardware needed to secure that connection.

What is included in the Sierra 18-72510 kit? This kit is a stud kit, meaning it supplies the studs used to attach the coupler to the flywheel on applicable Mercruiser setups.

How much does the 18-72510 stud kit weigh? The Sierra 18-72510 stud kit weighs 0.12 pounds, reflecting its compact size as a small hardware kit.

What are the dimensions of the Sierra 18-72510 stud kit? The product measures 0.39 x 0.39 x 0.39 inches, consistent with a small, compact hardware kit.

Is the Sierra 18-72510 stud kit genuine Sierra hardware? Yes, part number 18-72510 is manufactured and sold under the Sierra brand as a coupler-to-flywheel stud kit.

What finish does the 18-72510 stud kit have? The studs in this kit have a machined finish.

When would I need to replace the coupler-to-flywheel studs? Studs like those in the Sierra 18-72510 kit typically need replacement during coupler or flywheel service, particularly if the existing hardware is worn, corroded, or has lost proper torque retention.

Can the Sierra 18-72510 be installed with standard hand tools? Yes, this stud kit is intended for installation using standard hand tools during routine coupler or flywheel service.

What category of part is the Sierra 18-72510? The 18-72510 is listed under Engine Parts as a stud kit for the coupler-to-flywheel connection.

Does the Sierra 18-72510 kit fit all Mercruiser models? The Sierra 18-72510 stud kit is specified to fit Mercruiser coupler-to-flywheel applications; check that your unit uses this coupler-to-flywheel configuration before ordering.