FORD

DIFF CENTRE

FORD 4500

FORD 550,655,555
Before 08/86

FORD 550, 
After 09/86 555A,655,655A
 

FORD
555C,D
655C,D

Crownwheel &
Pinion

C5NN4209U  6.67:1
81803387 3.50:1 less handbrake
C5NN4209L 3.50:1 w/handbrake

81803387 3.50:1 ratio
E2NN4209EC 4.11:1
83906170 4.63:1 to 12/83
83935794 4.63:1 1/84+

7 types
See parts book

E8NN4209BA
Trans Handbrake
E8NN4209CA
Cable Handbrake

Crownwheel nuts & bolts

X3012 screw
9K2481
X3013 nut
3K3475

X3012 screw
83957533
X3013 nut
380135S43

X3012 screw
83957533
X3013 nut
380135S43

X3012 screw
83957533
X3013 nut
380135S43

Diff side bearing RH

M3124
957E4222 cup
957E4221 cone

M3124
957E4222 cup
957E4221 cone

M3124
957E4222 cup
957E4221 cone

M3124
957E4222 cup
957E4221 cone

Diff side bearing LH

M3125
510892 cup
510884 cone

M3125
510892 cup
510884 cone

M3125
510892 cup
510884 cone

M3125
510892 cup
510884 cone

Pinion bearing
front

X3004 
513368 +81845711

-
NCA4616A cup
81845711 cone

-
NCA4616A cup
81845711 cone

-
NCA4616A cup
E3NN4N028AA cone

Pinion bearing
rear

X3004 
513368 cone
81845711 cup

- ?
513368 cone
513369 cup

-
81824478
Cup & cone

-
D3NN4615A
Cup & cone

Pinion spigot bearing

X3005
81824478

X3005
81824478

X3005
81824478

X3005
81824478

Diff cross

X3006
81876885

X3006
81876885

X3006
81876885

X3006
81876885

RHS diff gear

X3007
C5NN4239A

X3007
C5NN4239A

X3007
C5NN4239A

X3007
C5NN4239A

LHS diff gear

X3008
C5NN4236A
81803445

X3008
C5NN4236A
81803445

X3008
C5NN4236A
81803445

X3008
C5NN4236A
81803445

Thrust washer side gears

X3009 (qty 2)
957E4228

X3009 (qty 2)
957E4228

X3009 (qty 2)
957E4228

X3009 (qty 2)
957E4228

Pinion gear

X3010  (qty 4)
957E4292B

X3010  (qty 4)
957E429

X3010  (qty 4)
957E42

X3010  (qty 4)
957E42

Thrust washer pinion gears

X3011 (qty 4)
508E4230A

X3011 (qty 4)
508E4230A

X3011 (qty 4)
508E4230A

X3011 (qty 4)
508E4230A

Pinion Seal
 

na

na

na

na

Pinion seal o’ring
 

na

na

na

na