2104-SPL250X | Genuine International® Universal U-Joint Kit

• - 1652 UPS Stripped Chassis (built before 5/23/97)
• - 4500 Medium Trucks (built before 5/23/97)
• - 7100 Medium Trucks (built before 5/23/97)
• - 4700 Medium Trucks (built before 5/23/97)
• - 4800 Medium Trucks (built before 5/23/97)
• - 1400 Stripped Chassis (built 1/1/89 thru 5/23/97)
• - 4900 Medium Trucks (built before 5/23/97)
• - 4600 Medium Trucks (built before 5/23/97)
• - 1600 Stripped Chassis (built 1/1/89 thru 5/23/97)
• - 9800 Premium Cabover (built on 1/16/98 & later)
• - 9800 Premium Cabover (built before 1/16/98)
• - Military
• - 9700 Premium Cabover (built 1991 & later)
• - 9600 Premium Cabover (built 1991 & later)
• - 9400 Premium Conventional (built before 3/15/96)
• - 9300 Premium Conventional (built before 3/15/96)
• - 9300 Premium Conventional (built on 3/15/96 & later)
• - 9200 Premium Conventional (built before 3/15/96)
• - 9200 Premium Conventional (built on 3/15/96 & later)
• - Amtran Genesis/FC Bus (built before 1/1/1999)
• - 3800 Bus Flat Back Cowls (built before 5/23/1997)
• - 3000 Bus Chassis (built on 5/23/97 & later)
• - 3700 Bus Flat Back Cowls (built before 5/23/1997)
• - 3400 Bus Flat Back Cowls (built before 5/23/1997)
• - 3600 Bus Flat Back Cowls (built before 5/23/1997)
• - 3900 Bus FC Chassis (built before 5/23/1997)

1. Maintain Smooth Power Transfer

The U-joint allows the driveshaft to rotate while the suspension moves up and down.
Replacing a worn U-joint prevents vibrations and keeps the drivetrain smooth.

2. Fix Vibrations and Noise

A damaged U-joint causes:

• Clunking noises

• Squeaking

• Shuddering at speed
  The kit restores proper function and eliminates these issues.

3. Prevent Drivetrain Damage

If a bad U-joint fails completely, the driveshaft can drop or break, damaging:

• Transmission

• Differential

• Undercarriage
  Replacing it early prevents major repairs.

4. Restore Proper Driveshaft Alignment

A fresh U-joint keeps the driveshaft properly aligned, reducing stress on connected components.

5. Improve Vehicle Safety

Faulty U-joints affect vehicle stability and can cause loss of power to the wheels.
Replacing them ensures safe operation.

6. Allow the Driveshaft to Flex

Suspension movement causes the shaft angle to change.
A working U-joint allows this movement without binding.

7. Provide All Necessary Replacement Parts

The kit includes:

• New U-joint

• Bearing caps

• Needle bearings

• Retaining clips

• Grease fitting (if applicable)
  So you have everything needed for a proper installation.

1. Clunking or Thudding Noise

A loud clunk when:

• Shifting from Park → Drive

• Accelerating or decelerating
  This happens because of excessive play in the joint.

2. Vibrations at Certain Speeds

Strong vibration coming from under the vehicle, especially around 30–60 mph, often indicates a worn or imbalanced U-joint.

3. Squeaking Noise at Low Speed

A rhythmic squeak that changes with vehicle speed is an early sign of dry or failing needle bearings inside the U-joint.

4. Shuddering During Acceleration

A worn U-joint can’t keep the driveshaft properly aligned, causing the vehicle to shake when taking off.

5. Difficulty Turning (Steering U-Joint)

If the U-joint is part of the steering column:

• Steering may feel stiff

• Binding or hesitation when turning the wheel

6. Visible Rust or Grease Leakage

U-joint caps that show rust, missing clips, or leaking grease indicate internal wear.

7. Driveshaft Wobble

A severely worn U-joint causes driveshaft misalignment, leading to wobbling or oscillation.

8. Clicking or Tapping While Driving

Indicates loose bearing caps or excessive play.

9. Complete U-Joint Failure

If ignored, the U-joint can break, causing:

• Driveshaft separation

• Loss of vehicle movement

• Serious damage to the underside