| Product Line | Engine |
| Category Name | Engine Gaskets |
| Part Type | Oil Seal |
| Alternate Part Name | Timing Seal, Crankshaft Seal |
| OEM Part Number | 57GC186A |
| Application Type | Heavy Duty Trucks, Semi-Trucks |
| Outside Diameter (O.D.) | 6,757 in. |
| Material | Fluoroelastomer |
| Housing Bore Diameter | 6.749 in. |
| Inside Diameter (ID) | 6,749 in. |
| Seal Shaft Diameter | 5.998 in. |
| Width | 0.675 in. |
| Seal Design Type | Rear Crankshaft Seal |
| Net Weight | 0.64 lb. |
| Cross References | 410, 5645, 57GC186A, EKT-3800, EKT3800, NS5645 |
| Intended Application | - Compatible with Rear Crankshaft Mack V8, E6, E7, E-Tech, ASET engines
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