MerCruiser Engine Applications:
MerCruiser 175/185 HP 4.3L V6 (1984-1992)
MerCruiser 888 V8 (1971-1977)
MerCruiser 898/200/5.0L V8 (1977-1995)
MerCruiser 205 HP V8 (1984-1991)
MerCruiser 215 HP V8 (1970-1972)
MerCruiser 225 HP V8 (1973-1974)
MerCruiser 228/230/5.0L V8 (1977-1994)
MerCruiser 233 HP V8 (1975-1977)
MerCruiser 250 HP V8 (1977)
MerCruiser 255/260/5.7L V8 (1973-1995)
MerCruiser 320 EFI V8 (1987-1989)
MerCruiser 350 Mag V8 (1986-1995)
MerCruiser MIE Inboard variants (214, 228, 233, 255, 260)
OMC I/O sterndrive models (by part number)

Product Details:
44 1/8" alternator/water pump drive V-belt
OEM specification reinforced rubber construction
For engines with 5.5" alternator pulley

Cross-Reference:
OEM 57-93658Q / OMC 0311046 / Aftermarket 18-15440

Alternator and water pump drive V-belt for MerCruiser V6 4.3L V8 5.0L 5.7L sterndrive and inboard marine engines (1970-1995). Direct replacement for OEM 57-93658Q. 44 1/8" belt fits 175-350 HP engines including 888, 898, 200, 228, 230, 260, 320 EFI, and 350 Mag models with 5.5" alternator pulley. Reinforced rubber construction provides reliable power transmission for alternator and raw water pump in demanding marine environments.

⚠️ Fitment Warning: Confirm OEM part number 57-93658Q for your engine. 44 1/8" belt for 5.5" pulley only. Check engine serial number range for compatibility.