V-BELTS ➊ High strength synthetic cords resist shockload failure. Their low stretch properties assure uniform performance over the life of the belt. ➋ The compression section is a special rubber compound that assures smooth and even transfer of load forces to the cords. ➌ Cogs are molded to precise engineering tolerances to improve flexibility and maintain cord support. Cog geometry provides a large area for air circulation to keep the belt cool and prevent damaging heat build up in the cushion section. ➍ Rubber edges maintain positive, no-slip contact with pulley grooves for reliable energy transfer. Part No. 18-15290 18-15300 18-15325 18-15345 18-15370 18-15380 18-15390 18-15400 18-15405 18-15410 18-15415 18-15430 OE # 57-13457, 57-13457T, 57-13457Q, 57-53215, 57-53215T 57-49756 57-77274A1, 57-77274 57-74271T, 57-74271, 57-74271Q 57-65607T, 57-65607, 57-65607Q - 57-52692 57-32850, 57-69143T, 57-69143Q 57-76269, 57-76269Q 57-49043A1, 57-64032A1, 57-32850, 57-49043, 57-64032, 57-64032Q1, 57-816544 57-36356 57-49211, 57-64416 BELT SIZE LISTING BY NUMBER Part No. 18-15435 Effective Length (in.) 29 30 32 1/2 34 1/2 37 38 39 40 40 1/2 41 41 1/2 43 Top Width (in.) 29/64 29/64 29/64 29/64 29/64 29/64 29/64 29/64 29/64 29/64 29/64 29/64 18-15440 18-15450 18-15455 18-15460 18-15470 18-15480 18-15490 18-15495 18-15500 18-15520 18-15550 OE # 57-64416, 57-49211 57-49213A1,57-45856 - - 57-48120A1, 57-48120, 57-48120Q1 57-78200A1, 57-78200, 57-78200Q1 57-48122, 57-48122Q 57-816295T, 57-816295Q 57-91035A1, 57-91035Q1, 57-91035 57-96834T, 57-96834Q, 57-96834, 57-13458, 57-13458Q 57-33170, 57-33170Q, 57-37619T 57-13458T HP 110 120 120 120 120 120 120 120 140 Liter 2.5L 2.5L Model 110 120 120 120 120 120 120 120 (18) 140 976 (1) 1/2” wide (13mm) belt (2) 3/8” wide (10mm) belt (3) 28” wide (711mm) belt (4) 30” wide (762mm) belt (5) 37” wide (940mm) belt (6) 40” wide (1016mm) belt (7) 50” wide (1270mm) belt (8) 55” wide (1397mm) belt Years 1963-1966 1964-1973 1974-1982 1974-1982 1982-1986 1982-1986 1982-89 1982-89 1968-73 CID 153 153 153 153 153 153 153 153 181 # Cyl 4 4 4 4 4 4 4 4 4 V-BELT APPLICATION Stroke Serial # 4 4 4 4 4 4 4 4 4 1537370 - 2044033 1666601 - 3770649 3770650 - 6229717 3770650 - 6229717 6229718 - b531853 6229718 - b531853 6229718 - C853255 6229718 - C853255 2508261-3770649 (9) Use with 5 1/2” (140mm) dia water pump pulley (10) Use with 5 7/8” (149mm) dia water pump pulley (11) Use with 7” (178mm) dia water pump pulley (12) Use with stamped steel sea water pump pulley (13) Use with cast aluminum sea water pump pulley (14) Use with plastic 4 3/4” (121mm) dia p/s pump pulley (15) Use with metal 5 3/4” (146mm) dia p/s pump pulley (16) For engine with high mounted p/s pump Effective Length (in.) 43 1/2 44 45 45 1/2 46 47 48 52 1/2 49 1/2 50 52 55 Top Width (in.) 29/64 29/64 29/64 29/64 29/64 29/64 29/64 29/64 29/64 29/64 29/64 29/64 Belt Type V-BELT V-BELT V-BELT V-BELT V-BELT V-BELT V-BELT V-BELT V-BELT Alternator/ Water Pump 18-15410 18-15410 18-15410 18-15410 18-15410 (19) 18-15400 (18) 18-15410 18-15400 18-15410 (17) For engines with low mounted p/s pump (18) For engine with power steering (19) For engines w/o power steering (20) For engines with closed cooling (21) For engines with standard cooling (22) Replacement kit includes 5 3/4” (146mm) pulley and longer serpentine belt (23) For engines with high mounted alternator Power Steering — — Sea Water Pump — — 18-15400 (40” BELT) — 18-15400 (40” BELT) — — — — 18-15370 — — — — — — I/O — MERCRUISER - Cooling System
20220712
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