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  2. Auto Parts
  3. Driveline and Axles
  4. Bearings
  5. Differential Bearing
  6. Timken 663

Timken 663 Differential Bearing

Timken

 
Brand:Timken
Part Number: 663
UPC: 053893075358
Weight: 4.23 lbs
Condition:New



On Sale:

$57.43

Availability:
4 in Stock
Warehouse: US-7
Quantity:

Product Information

Description:

AG BEARING

Both The Inner (Cone) And Outer (Cup) Should Be Replaced At The Same Time To Maximize Reliability And Life

Engineered To Deliver Higher Speeds, Heavier Loads And Longer Life

Timken Is The Recognized Global Leader In Tapered Roller Bearings.

With Capacity To Manage Both Radial And Axial Loads, High Performance Timken Tapered Roller Bearing Components Are Engineered To Provide The Greatest Durability In The Most Compact Space.

Specifications:

Eaton Axle #:
23389
Eaton Axle #:
658647
Eaton Axle #:
863471A
Fruehauf #:
525792
Mack #:
149382
Mack #:
62AX244
National Bearings #:
663
SKF #:
BR663
SKF #:
K663
Spicer #:
550325

Select a vehicle to narrow Timken 663 Differential Bearing fitment info!

Last Updated: 09/12/2024

Years Vehicle Per Vehicle Position Fit NotesFitment Notes

1988

 

1988

 
Ford B600

7.0L V8 Gas
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford B600



7.0L V8 Gas

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Ford B600

6.6L L6 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford B600



6.6L L6 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford B600

6.1L V8 Gas
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford B600



6.1L V8 Gas

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford B600

8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford B600



8.2L V8 Diesel,
8.2L V8 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Ford B700

6.6L L6 Diesel Turbo,
7.8L L6 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford B700



6.6L L6 Diesel Turbo,
7.8L L6 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 
Ford B700

7.0L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford B700



7.0L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford B700

6.1L V8 Gas,
7.0L V8 Gas
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford B700



6.1L V8 Gas,
7.0L V8 Gas

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1987

 

1986

 

1985

 

1987

 

1986

 

1985

 
Ford B700

6.1L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford B700



6.1L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford B700

8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford B700



8.2L V8 Diesel,
8.2L V8 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1983

 

1983

 
Ford B700

6.1L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford B700



6.1L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1987

 

1986

 

1985

 

1984

 

1983

 

1987

 

1986

 

1985

 

1984

 

1983

 
Ford B7000

10.4L V8 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford B7000



10.4L V8 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1986

 

1985

 

1984

 

1983

 

1986

 

1985

 

1984

 

1983

 
Ford C600

6.1L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford C600



6.1L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford C600

6.1L V8 Gas,
8.2L V8 Diesel
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford C600



6.1L V8 Gas,
8.2L V8 Diesel

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1986

 

1985

 

1984

 

1983

 

1982

 

1986

 

1985

 

1984

 

1983

 

1982

 
Ford C700

6.1L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford C700



6.1L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 
Ford C700

7.0L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford C700



7.0L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford C700

6.1L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford C700



6.1L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford C7000

10.4L V8 Diesel
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford C7000



10.4L V8 Diesel

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1988

 

1987

 

1986

 
Ford C800

8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford C800



8.2L V8 Diesel,
8.2L V8 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1987

 

1986

 

1987

 

1986

 
Ford C800

6.1L V8 Gas,
7.0L V8 Gas
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford C800



6.1L V8 Gas,
7.0L V8 Gas

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1986

 

1986

 
Ford C800

6.1L V8 LPG,
7.0L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford C800



6.1L V8 LPG,
7.0L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1983

 

1983

 
Ford C800

6.1L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford C800



6.1L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1983

 

1982

 

1981

 

1983

 

1982

 

1981

 
Ford C800

7.0L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford C800



7.0L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1983

 

1982

 

1981

 

1980

 

1983

 

1982

 

1981

 

1980

 
Ford C800

6.1L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford C800



6.1L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1988

 
Ford C8000

7.8L L6 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford C8000



7.8L L6 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford C8000

10.4L V8 Diesel,
10.4L V8 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford C8000



10.4L V8 Diesel,
10.4L V8 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Ford F600

7.8L L6 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F600



7.8L L6 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1988

 

1987

 

1986

 
Ford F600

6.6L L6 Diesel Turbo,
7.0L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F600



6.6L L6 Diesel Turbo,
7.0L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford F600

6.1L V8 Gas,
7.0L V8 Gas
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F600



6.1L V8 Gas,
7.0L V8 Gas

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 
Ford F600

6.1L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F600



6.1L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford F600

8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F600



8.2L V8 Diesel,
8.2L V8 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1982

 

1982

 
Ford F600

7.0L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F600



7.0L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1988

 
Ford F700

10.4L V8 Diesel
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F700



10.4L V8 Diesel

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Ford F700

10.4L V8 Diesel Turbo,
7.8L L6 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F700



10.4L V8 Diesel Turbo,
7.8L L6 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1988

 

1987

 

1986

 
Ford F700

6.6L L6 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F700



6.6L L6 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 
Ford F700

7.0L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F700



7.0L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford F700

6.1L V8 Gas,
7.0L V8 Gas
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F700



6.1L V8 Gas,
7.0L V8 Gas

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 
Ford F700

6.1L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F700



6.1L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford F700

8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F700



8.2L V8 Diesel,
8.2L V8 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1983

 

1983

 
Ford F700

10.4L V8 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F700



10.4L V8 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1980

 

1980

 
Ford F700

10.4L V8 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F700



10.4L V8 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1987

 

1986

 

1985

 

1984

 

1983

 

1987

 

1986

 

1985

 

1984

 

1983

 
Ford F7000

10.4L V8 Diesel,
10.4L V8 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F7000



10.4L V8 Diesel,
10.4L V8 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1985

 

1985

 
Ford F7000

8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F7000



8.2L V8 Diesel,
8.2L V8 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Ford F800

6.6L L6 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F800



6.6L L6 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1988

 

1987

 

1986

 
Ford F800

7.8L L6 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F800



7.8L L6 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 
Ford F800

7.0L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F800



7.0L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford F800

6.1L V8 Gas,
7.0L V8 Gas
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F800



6.1L V8 Gas,
7.0L V8 Gas

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 
Ford F800

6.1L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F800



6.1L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford F800

8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford F800



8.2L V8 Diesel,
8.2L V8 Diesel Turbo

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1988

 
Ford FT800

6.1L V8 Gas
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford FT800



6.1L V8 Gas

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1985

 

1988

 

1987

 

1986

 

1985

 
Ford FT800

7.0L V8 LPG
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford FT800



7.0L V8 LPG

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford FT800

7.0L V8 Gas
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford FT800



7.0L V8 Gas

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 
Ford FT800

6.1L V8 Gas
1
 
Rear Left (Driver)
 
Eaton 23121 Axle
 

Ford FT800



6.1L V8 Gas

Rear Left (Driver) Eaton 23121 Axle

1 Per Vehicle