General Motors (GM) Permanent Magnet Gear Reduction (PMGR) Delco-style starter motor.It is designed to fit a wide range of GM truck, SUV, and van engines, as well as common marine engine adaptations, it fits the following major vehicle applications:1. General Motors Trucks & SUVs (4.8L, 5.3L, 6.0L V8 Engines)This mounting style is most iconic for late 1990s through late 2000s GM V8 platforms, including:
• Chevrolet Silverado 1500 / 2500 / 3500
• GMC Sierra 1500 / 2500 / 3500
• Chevrolet Tahoe, Suburban, and Avalanche
• GMC Yukon and Yukon XL
• Cadillac Escalade2. GM S10 & Midsize Platforms (4.3L V6 Engines)A shorter variant using this exact nose configuration fits GM 4.3L V6 powertrains found in:
• Chevrolet S10 and GMC Sonoma
• Chevrolet Blazer and GMC Jimmy
• Oldsmobile Bravada3. Marine Inboard Engines (Mercruiser / Volvo Penta)Because these GM engine blocks (4.3L, 5.0L, 5.7L, 8.1L) were widely converted for marine use, marine-certified versions (stamped SAE J1171 for ignition protection) featuring this precise bolt configuration fit:
• Mercruiser inboard/outboard marine engines
• Volvo Penta V6 and V8 marine setups
Common Interchange Part Numbers• Industry Standard (Lester): 6494 / 6494N
• ACDelco / GM Genuine: 12686197, 323-1638, 323-1468, or 12674768
• Aftermarket Interchanges:
• WAI Global: 6494N
• BBB Industries: N6494
• TYC: 1-06757
