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Fits MerCruiser V8 Serpentine Belt Systems
Designed for MerCruiser V8 inboard and stern drive engines. The 15102P Serpentine Belt is a replacement accessory drive belt used on MerCruiser engines equipped with serpentine belt systems. It drives key components such as the alternator, water pump, and other engine accessories.
Compatibility
This serpentine belt fits select MerCruiser V8 engines equipped with serpentine belt systems. It replaces multiple OEM Mercury / MerCruiser belt part numbers used across these applications.
Application Chart
| Brand | Engine Model | Displacement | Engine Type | Drive System |
|---|---|---|---|---|
| MerCruiser | 5.0L V8 | 305 CID | Inboard / Stern Drive | Serpentine Belt System |
| MerCruiser | 5.7L V8 | 350 CID | Inboard / Stern Drive | Serpentine Belt System |
| MerCruiser | 6.2L V8 | 377 CID | Inboard / Stern Drive | Serpentine Belt System |
| MerCruiser | 7.4L V8 | 454 CID | Inboard / Stern Drive | Serpentine Belt System |
| MerCruiser | 8.2L V8 | 502 CID | Inboard / Stern Drive | Serpentine Belt System |
Only fits engines equipped with serpentine belt systems. Always confirm using your engine serial number and existing belt part number before ordering.
Part Numbers & Cross References
| Reference Type | Part Number |
|---|---|
| Pro Marine Part | 15102P |
| Cross Reference # | 18-15102 |
| Cross Reference # | 57-865615Q06 |
| Cross Reference # | 57-865615006 |
| Cross Reference # | 57-8638766 |
| Cross Reference # | 57-8610491 |
What This Part Is Used For
The serpentine belt is a single continuous belt that drives multiple engine accessories, including the alternator, water pump, and other components. It plays a critical role in maintaining proper engine operation.
Over time, belts can wear, stretch, or crack due to heat and continuous use. Replacing the belt helps prevent slipping, loss of accessory function, or unexpected failure while running.
Frequently Asked Questions
What engines does this belt fit?
This belt fits select MerCruiser V8 engines equipped with serpentine belt systems.
What does a serpentine belt do?
It drives multiple engine accessories such as the alternator and water pump using a single belt.
What are signs of a worn belt?
Cracking, glazing, squealing, or slipping can indicate the belt needs replacement.
How often should this be replaced?
It should be inspected regularly and replaced as part of routine maintenance or when wear is visible.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 (continental U.S.).
- Orders ship via UPS, USPS, or FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical ground delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Part Numbers
Pro Marine Part: 15102P
Cross Reference #: 18-15102, 57-865615Q06, 57-865615006, 57-8638766, 57-8610491
Common Search Terms: MerCruiser V8 serpentine belt, marine engine drive belt, stern drive belt replacement, 15102P belt
8610491
8638766
865615Q06
865615006