OTC 6602 Chrysler Differential Bearing Preload Wrench
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OTC 6602 Differential Bearing Preload Wrench
The OTC 6602 Differential Bearing Preload Wrench (similar to the Miller C‑4164) is an essential OEM‑style service tool for adjusting differential bearing free play on Chrysler and Dodge rear axles. Designed to fit inside the axle tube and engage the threaded adjusters, this tool provides precise control when setting bearing preload on 7‑1/4", 8‑1/4", 8‑3/4", and 9‑1/4" rear axles.
Manufactured by SPX/Bosch under the OTC, Rotunda, Kent‑Moore, and Miller tool families, this wrench delivers the accuracy and durability required for professional drivetrain service.
Key Features
- Adjusts differential bearing free play on Chrysler/Dodge rear axles
- Fits inside axle tube to access threaded adjusters
- Compatible with 7‑1/4", 8‑1/4", 8‑3/4", and 9‑1/4" rear axles
- Equivalent to Miller C‑4164
- OEM‑quality construction by SPX/Bosch (OTC Rotunda Kent‑Moore Miller)
- Essential for precise differential setup and bearing preload adjustment
Applications
- Chrysler / Dodge rear axle service
- Differential bearing preload adjustment
- Drivetrain rebuilds and gear setup
- Professional automotive repair shops and drivetrain specialists
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