Ford 10 1/4"
 
Ring Gear Diameter:
Pinion Shaft Diameter:
Ring Gear Bolts:
Right Hand Threads:
Pinion Splines:
Cover Bolts:
 
10 1/4"
1.938"
12
1/2" x 20
31
12
Model
Year
F250
85-Pres.
F350
85-Pres.
Excursion
99-03
Ratio
Teeth
Part #
3.55
39-11
F10/355S
3.55
39-11
F10/355L
4.10
41-10
F10/410S
4.10
41-10
F10/410L
4.55
41-9
F10/455S
4.55
41-9
F10/455L
4.88
39-8
F10/488L
5.13
41-8
F10/513L
.............................................
When replacing a gear set from a 1992 & earlier vehicle, use a ring & pinion set with the suffix “S”. 1993 & later use the suffix “L”. Otherwise, you will have to change the yoke. When replacing a 10 1/2”gear set, use a 10 1/4” ring & pinion with the suffix ‘L”.
     
Installation Kits
Part #
Master Installation Kts
F10/MOKIT
Installation Kits
F10/KIT
Mini Installation Kit
F10/MKIT
Pinion Bearing Kit
 
PINSU4
 
       
Tech Note:
When replacing a 10.5” gear set with a 10.25” you must utilize the 10.25” inner pinion bearing.
 
       
AMC Ring & Pinion Sets
Chrysler Ring and Pinion Gear Sets
Dana Ring and Pinion Gear Sets
GM Ring and Pinion Gear Sets
Suzuki Ring and Pinion Gear Sets
Toyota Ring and Pinion Gear Set
Ultralite Ring and Pinion Gear Sets
Precision Gear Differentials
Precison Gear Installation Kits
Precision Gear Bearing Set-Up Kits
Precision Gear Ultralite Series
The Precision Gear Story
Precision Gear Tech Help
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