PORC Off Road Products
Sprocket Bearing for 76-79 Jeep CJ7 & 73-79 Jeep SJ | Replaces 8122390 18678.03 | PORC Off Road Products
Sprocket Bearing for 76-79 Jeep CJ7 & 73-79 Jeep SJ | Replaces 8122390 18678.03 | PORC Off Road Products
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Restore smooth Quadra-Trac transfer case operation with an OE-style sprocket bearing.
Designed for Quadra-Trac transfer case applications, this sprocket bearing supports the front drive sprocket while reducing friction and promoting smooth, reliable drivetrain performance. It may also be used as a front or rear differential bearing on compatible applications.
Quick Specs
- Part Type: Transfer Case Sprocket Bearing
- Location: Front Drive Sprocket
- Transfer Case: Quadra-Trac
- Additional Application: May also be used as a Front or Rear Differential Bearing
- Bearing Races Included: No
- Quantity: Sold Individually
- Replacement Style: OE-Style Replacement
Vehicle Fitment
- 1976-1979 Jeep CJ7 with Quadra-Trac transfer case
- 1973-1979 Jeep SJ with Quadra-Trac transfer case
- 1973-1979 Jeep J-Series with Quadra-Trac transfer case
Part Numbers
- OE Part Number: 8122390
- Interchange Numbers: 18678.03
Product Details
Bearings play a critical role in supporting rotating drivetrain components while minimizing friction and wear. Replacing a worn sprocket bearing helps maintain proper alignment, promotes smooth operation, and supports long-term transfer case reliability.
Manufactured as an OE-style replacement, this bearing is engineered for dependable fit and performance during routine maintenance, transfer case repairs, or complete drivetrain rebuilds. Bearing races are not included.
Fitment Note
Please verify your vehicle's transfer case application and original part number before ordering to ensure proper fitment. This bearing may also serve as a front or rear differential bearing on certain compatible applications.
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