HomeDriveline and Axles > BearingsTimken 3994 Differential Bearing - Front, Rear, Rear Inner or Rear Left
Part #: 3994

Timken 3994 Differential Bearing - Front, Rear, Rear Inner or Rear Left

Rear Inner
61 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Ford, E-250 Econoline, F-250, F-350, E-250 Econoline Club Wagon, and F-500
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Reliable Differential Bearing for Ford E-250 Econoline and F-Series

The Timken 3994 differential bearing is engineered to provide dependable performance for Ford trucks and vans. Designed specifically for models like the Ford E-250 Econoline, E-250 Econoline Club Wagon, F-250, and F-350, this bearing supports smooth driveline operation and helps maintain vehicle stability under load.

Key Features of Timken 3994 Differential Bearing

  • Precision-engineered for Ford E-250 Econoline, E-250 Econoline Club Wagon, F-250, and F-350 models
  • Durable construction to withstand heavy-duty driveline stresses
  • Compatible with OEM specifications for reliable fit and function
  • Designed to reduce friction and wear in the differential assembly
  • Timken quality ensures consistent performance and longevity

Detailed Description of Timken 3994 Differential Bearing

The Timken 3994 differential bearing is a critical component in the driveline system of select Ford vehicles. It supports the differential gears by allowing smooth rotation and minimizing friction between moving parts. This bearing is manufactured to meet strict quality standards, ensuring it fits precisely within the differential housing of Ford E-250 Econoline, E-250 Econoline Club Wagon, F-250, and F-350 models. Its robust design helps maintain drivetrain efficiency and reduces the risk of premature wear or failure.

Common Applications and Problem Solving

  • Replaces worn or damaged differential bearings in Ford E-250 Econoline and F-Series trucks
  • Addresses noise or vibration issues originating from the differential
  • Helps resolve uneven tire wear caused by differential play
  • Prevents differential overheating due to excessive friction
  • Supports smooth power transfer to the wheels under heavy load conditions

Installation Notes and Tips

  • Ensure compatibility with Ford E-250 Econoline, E-250 Econoline Club Wagon, F-250, and F-350 before installation
  • Inspect the differential housing and gears for wear or damage prior to bearing replacement
  • Use proper tools to press the bearing into place without causing damage
  • Follow manufacturer torque specifications when reassembling the differential
  • Check for proper bearing preload and clearance during installation

Quality Assurance and Warranty

Timken 3994 differential bearings are manufactured under stringent quality control processes to meet OEM standards. Timken provides a limited warranty against defects in material and workmanship, ensuring reliable performance when installed correctly. This bearing is designed to deliver consistent durability and support the driveline needs of Ford E-250 Econoline and F-Series vehicles.

This part fits 61 vehicles. Search below:

YearMakeModelDrive TypePositionNotes
1998FordE-250 EconolineRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1997FordE-250 EconolineRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1996FordE-250 EconolineRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1995FordE-250 EconolineRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1994FordE-250 EconolineRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1994FordF-250RWDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1994FordF-2504WDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1994FordF-350RWDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1994FordF-3504WDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1993FordE-250 EconolineRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1993FordF-250RWDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1993FordF-2504WDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1993FordF-350RWDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1993FordF-3504WDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1992FordE-250 EconolineRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1992FordF-250RWDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1992FordF-2504WDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1992FordF-350RWDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1992FordF-3504WDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1991FordE-250 EconolineRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1991FordE-250 Econoline Club WagonRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1991FordF-250RWDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1991FordF-2504WDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1991FordF-350RWDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1991FordF-3504WDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1990FordE-250 EconolineRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1990FordE-250 Econoline Club WagonRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1990FordF-250RWDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1990FordF-2504WDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1990FordF-350RWDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1990FordF-3504WDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1989FordE-250 EconolineRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1989FordE-250 Econoline Club WagonRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1989FordF-250RWDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1989FordF-2504WDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1989FordF-350RWDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1989FordF-3504WDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1988FordE-250 EconolineRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1988FordE-250 Econoline Club WagonRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1988FordF-250RWDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1988FordF-2504WDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1988FordF-350RWDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1988FordF-3504WDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1987FordE-250 EconolineRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1987FordE-250 Econoline Club WagonRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1987FordF-250RWDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1987FordF-2504WDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1987FordF-350RWDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1987FordF-3504WDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1986FordE-250 EconolineRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1986FordE-250 Econoline Club WagonRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1986FordF-250RWDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1986FordF-2504WDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1986FordF-350RWDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1986FordF-3504WDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1985FordE-250 EconolineRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1985FordE-250 Econoline Club WagonRWDRear InnerFull Float Axle - 10.25 in. Ring Gear
1985FordF-250RWDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1985FordF-2504WDRear InnerFull Floating Axle - 10.25 in. Ring Gear - Thru 3/31/1994
1985FordF-350RWDRear Inner10.25 in. Ring Gear - Thru 3-31-1994
1985FordF-3504WDRear Inner10.25 in. Ring Gear - Thru 3-31-1994

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.