Sierra V-Belt 18-15290 for MerCruiser 8.2L MIE and 8.2L MPI MIE Engines

The Sierra 18-15290 is a V-belt engineered as a direct fit replacement for MerCruiser 8.2L MIE and 8.2L MPI MIE sterndrive and inboard engines. This belt drives engine-mounted accessories such as the alternator and water circulation components, keeping charging and cooling systems running as the engine designer intended. Choosing the correct belt part number for your specific engine serial number range matters because MerCruiser revised belt specifications across production runs, and an incorrect belt can slip, wear prematurely, or fail to properly tension accessory drives.

This part number is confirmed for the MerCruiser 8.2L MIE (502 cid, 8-cylinder, 4-barrel) built within serial numbers C878221 through D857199, and for the MerCruiser 8.2L MPI MIE (502 cid, 8-cylinder, 4-barrel) built within serial numbers K147350 through K999999. Boat owners and marine technicians can use the engine serial number stamped on the block to confirm this belt is the correct match before ordering, since MerCruiser used different belt part numbers across other serial ranges on these same engine families.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-15290
• Product Type: V-Belt
• Weight: 0.18 pounds
• UPC: 030999566256

Fitment

• MerCruiser 8.2L MIE (502 cid, 8-cylinder, 4-barrel), serial numbers C878221-D857199, 1990-1993
• MerCruiser 8.2L MPI MIE (502 cid, 8-cylinder, 4-barrel), serial numbers K147350-K999999, 1997

Frequently Asked Questions

What engines does the Sierra 18-15290 V-belt fit? The Sierra 18-15290 fits the MerCruiser 8.2L MIE (502 cid, 8-cylinder, 4-barrel) built within serial numbers C878221-D857199, and the MerCruiser 8.2L MPI MIE (502 cid, 8-cylinder, 4-barrel) built within serial numbers K147350-K999999.

How do I know if 18-15290 is the right belt for my MerCruiser 8.2L engine? Check the engine serial number stamped on the block against the ranges C878221-D857199 (8.2L MIE) or K147350-K999999 (8.2L MPI MIE); if your engine falls in one of those ranges, the Sierra 18-15290 is the correct belt.

What years does the Sierra 18-15290 V-belt cover? This belt covers MerCruiser 8.2L MIE engines from 1990-1993 and MerCruiser 8.2L MPI MIE engines from 1997, based on the serial number ranges for those production years.

How much does the Sierra 18-15290 V-belt weigh? The Sierra 18-15290 V-belt weighs 0.18 pounds.

Is the Sierra 18-15290 a genuine Sierra part? Yes, 18-15290 is a Sierra brand V-belt manufactured for marine applications, not a generic aftermarket substitute.

What does the 18-15290 V-belt drive on the engine? On the MerCruiser 8.2L MIE and 8.2L MPI MIE engines it fits, this V-belt drives engine-mounted accessories such as the alternator and cooling components.

Does 18-15290 fit other MerCruiser 8.2L engine variants? No, 18-15290 is specified only for the 8.2L MIE (serial numbers C878221-D857199) and 8.2L MPI MIE (serial numbers K147350-K999999); other 8.2L serial ranges use different Sierra belt part numbers.

What is the UPC for the Sierra 18-15290 V-belt? The UPC for the Sierra 18-15290 V-belt is 030999566256.

Can I install the Sierra 18-15290 V-belt myself? The 18-15290 is a standard accessory drive V-belt that can be installed using typical belt tensioning and replacement procedures for MerCruiser 8.2L MIE and 8.2L MPI MIE engines.

Why does the engine serial number matter for ordering this belt? MerCruiser 8.2L engines went through multiple belt specification changes across production, so the Sierra 18-15290 is matched to specific serial number ranges (C878221-D857199 for 8.2L MIE, K147350-K999999 for 8.2L MPI MIE) rather than fitting all 8.2L engines.