Description
Countershaft seal failure is one of the most common sources of transmission fluid loss in high-performance engines, leading to costly internal damage if left unaddressed. The COMETIC Shift Shaft Seal OS197 is engineered to eliminate this vulnerability with precision manufacturing and material science developed specifically for racing and street performance applications. Replace this seal whenever you service or replace your countershaft sprocket to ensure reliable sealing and extend transmission longevity.
- MPN: OS197
- Seal type: Countershaft
- Material: High-performance elastomer
- Manufacturing: U.S.A.-made
- Installation: Bolt-on replacement
- Fitment: Vehicle-specific (verify application)
- Service life: OEM-equivalent durability
- Recommended service: With countershaft sprocket replacement






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