Differential Side Bearing Kit - Mopar (68454735AA)

Details

• Brand:

  

• SKU:

  68454735AA

• Other Names:

  Bearing Kit

• Description:

  DIFFERENTIAL BEARING

  Mopar Part Number: 68454735AA

  Differential Side Bearing (Carrier Bearing Kit)

  🧾 Official Mopar Description

  Bearing Kit – Differential Side (also referred to as Differential Carrier Bearing)

  🔧 Function

  The 68454735AA differential bearing supports the differential carrier (case) inside the rear axle housing. It allows the carrier and ring gear assembly to rotate smoothly while maintaining precise gear alignment. This bearing is critical for:

  • Proper ring‑and‑pinion alignment
  • Smooth power transfer to the axle shafts
  • Reducing gear noise, vibration, and premature wear
  • Supporting heavy‑duty towing and payload loads

  This is a load‑bearing tapered roller bearing, engineered for high torque and sustained axle stress.

  📍 Installation Location

  • Component: Rear differential carrier
  • Position: Side bearing (left or right side of the carrier)
  • Axle Type: Heavy‑duty rear axle (typically 12.0‑inch rear axle)
  • Service Use: Differential rebuild or carrier replacement

  ⚠️ These bearings are normally installed as a matched pair and require correct preload and backlash setup during installation.
  

  🚗 Typical Applications

  • Make: Ram
  • Models:
    • Ram 3500
    • Ram 4500 / 5500 Chassis Cab
  • Model Years: Generally 2019–2026 (varies by axle configuration)
  • Engines:
    • 6.7L Cummins Turbo Diesel
    • 6.4L V8 Gas

  🏷️ Part Details

  • Brand: Genuine Mopar (OEM)
  • Part Number: 68454735AA
  • Category: Differential / Drivetrain
  • Condition: New
  • Fitment Type: Direct OEM replacement
  • Package Type: Bearing kit (bearing and race)
  • Warranty: Mopar factory warranty (minimum 12 months)

  ⚠️ Important Service Notes

  • Requires special tools and setup procedures
  • Incorrect preload or backlash can cause gear noise or gear failure
  • Often replaced together with:
    • Pinion bearings
    • Carrier shims
    • Differential seals

  ✅ Summary

  Mopar 68454735AA is a rear differential side (carrier) bearing kit used in heavy‑duty Ram axles. It is essential for proper differential operation and is typically replaced during axle or differential service.

  If you want, I can also:

  • Confirm VIN‑specific fitment
  • Identify the matching pinion bearing kit
  • Compare this OEM bearing to Timken / KOYO equivalents
  • Provide setup torque & preload specifications

  Just tell me how you’d like to continue.

  
  

• Condition: New
• Notes: Transmissions: 6-spd auto aisin as69rc hd trans.
  Engines: 6.7l i6 cummins turbo diesel engine.
• Applications: Chassis 60" CA Regular Cab 4x2. Chassis 60" CA Regular Cab 4x4. Chassis 84" CA Regular Cab 4x2. Chassis 84" CA Regular Cab 4x4. 60" CA Chassis Crew Cab 4x2. 60" CA Chassis Crew Cab 4x4.

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