Sierra Serpentine Belt 57-865615007 for MerCruiser 8.2L MPI MIE 1998-01

This Sierra serpentine belt, part number 18-15103, is a direct-fit drive belt engineered for the cooling and accessory drive system on MerCruiser 8.2L MPI MIE inboard engines within the OL002450-OL674200 serial number range. It is built to OEM quality standards for correct fit, form, and function, so it drops in as a straightforward replacement without modification.

The belt is constructed from high-quality polychloroprene rubber reinforced with polyester fiber tensile members, giving it oil resistance and temperature stability for continuous duty in a marine engine bay. This construction resists the heat cycling, oil exposure, and constant flexing that shorten the life of lower-quality belts, helping maintain steady drive tension for the water pump, alternator, and other engine-driven accessories.

Sierra manufactures serpentine belts across a wide range of sizes to match the drive systems used on different MerCruiser engine families, and 18-15103 is the specific part engineered for the 8.2L MPI MIE application referenced above. Confirm your engine model and serial number against the range listed here before ordering to ensure correct fitment.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-15103
• Fitment: MerCruiser 8.2L MPI MIE, 1998-01
• Engine Serial Number Range: OL002450-OL674200
• Replaces: 57-865615007
• Color: White
• Material: Polyester, Rubber
• Belt Style: Serpentine Belt
• Fit Type: Universal Fit
• Weight: 0.55 pounds
• UPC: 808282145378

Fitment

• MerCruiser 8.2L MPI MIE, 1998-01, serial number range OL002450-OL674200

Replaces (OEM)

• 57-865615007

Frequently Asked Questions

What engine does Sierra 18-15103 fit? Sierra part 18-15103 is engineered for MerCruiser 8.2L MPI MIE engines within the OL002450-OL674200 serial number range.

Does 18-15103 replace the OEM belt 57-865615007? Yes, Sierra 18-15103 is a direct replacement for OEM number 57-865615007 on the applicable MerCruiser 8.2L MPI MIE engines.

What is the belt made of? The belt is constructed from polychloroprene rubber with polyester fiber tensile members, giving it oil resistance and temperature stability for marine engine use.

What color is this serpentine belt? Sierra 18-15103 is white.

How much does the belt weigh? Sierra part 18-15103 weighs 0.55 pounds.

How do I know if this belt fits my MerCruiser? Check your engine's serial number against the OL002450-OL674200 range specified for the 8.2L MPI MIE application; 18-15103 is engineered specifically for that range.

Is this a genuine Sierra part or a generic aftermarket belt? This is a genuine Sierra part, number 18-15103, manufactured to OEM quality standards for fit, form, and function.

What comes in the box with 18-15103? The package contains one Sierra serpentine belt, part number 18-15103.

Is 18-15103 a serpentine belt or a V-belt? It is a serpentine belt design, part number 18-15103, used on the accessory drive of the specified MerCruiser engine.

What is the UPC for this part? Sierra 18-15103 has UPC 808282145378.