The O-Ring for GN Dust Cap by Winters (MPN 7479) is a precision sealing component designed for differential and transmission cooler applications where dust caps protect critical hydraulic connections. This replacement O-ring is essential for any mechanic or builder working with Winters cooling equipment, transmission lines, or systems requiring secure, leak-free dust cap assemblies.
Winters manufactures O-rings with consistent compression-set resistance and elastomer durability to handle thermal cycling and moderate pressure fluctuations typical of cooler line environments. The O-ring material resists common automotive fluids—transmission fluid, coolant, and light hydraulic oils—maintaining flexibility and sealing force across temperature ranges encountered in street and competition applications.
At 2.55 inches outer diameter with a 0.3-inch cross-section, this ring provides a precise fit within the GN dust cap assembly, ensuring proper radial compression and axial retention without over-squeezing or leakage pathways. Technicians and enthusiasts maintaining Winters cooler systems, street rods with upgraded transmission cooling, or any build utilizing Winters dust cap fittings will find this O-ring indispensable for preventive maintenance.
| Item Returns | This item can be returned |
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