Northern Auto Part - Index
Northern Auto Part - Northern Auto Parts - Index
Transmission & Rearend
FORD 9”
Part# Installation Bearing
Number Ratio Price Kit Price Kit Price
F9-350A 3.50 $124.99 F9IK $28.99 R9RT* $74.99
F9-456A 4.56 $124.99 F9IK $28.99 R9RT* $74.99
F9-486A 4.86 $124.99 F9IK $28.99 R9RT* $74.99
*Bearing Kit for non 28 spline
FORD 8.8
F8.8-355A 3.55 $124.99 F8.8IK $24.99 R8.8RT $64.99
F8.8-410A 4.10 $124.99 F8.8IK $24.99 R8.8RT $64.99
F8.8-456A 4.56 $124.99 F8.8IK $24.99 R8.8RT $64.99
AMC Model 20
Part# Installation Bearing
Number Ratio Price Kit Price Kit Price
AM20-373 3.73 $159.99 AM20IK $35.99 R20RT $64.99
AM20-410 4.10 $159.99 AM20IK $35.99 R20RT $64.99
CHRYSLER 8.25 - 10 BOLT
C8.25-355 3.55 $199.99 C8.25IK $23.99 R8.25RT $64.99
C8.25-390 3.90 $199.99 C8.25IK $23.99 R8.25RT $64.99
C8.25-410 4.10 $199.99 C8.25IK $23.99 R8.25RT $64.99
CHRYSLER 9.25 - 12 BOLT
C9.25-355 3.55 $199.99 C9.25IK $32.99 R9.25RT $79.99
C9.25-390 3.90 $199.99 C9.25IK $32.99 R9.25RT $79.99
C9.25-410 4.10 $199.99 C9.25IK $32.99 R9.25RT $79.99
DANA 44
D44-373 3.73 SC* $159.99 D44IK $28.99 Call
D44-373F 3.73 RC**$146.99 D44IK $28.99 Call
D44-409 4.09 SC* $145.99 D44IK $28.99 Call
D44-409F 4.09 RC**$169.99 D44IK $28.99 Call
D44-456 4.56 SC* $146.99 D44IK $28.99 Call
D44-456F 4.56 RC**$146.99 D44IK $28.99 Call
D44-489 4.89 SC* $146.99 D44IK $28.99 Call
D44-489F 4.89 RC**$189.99 D44IK $28.99 Call
D44-513F 5.13 RC**$189.99 D44IK $28.99 Call
D44-538 5.38 SC* $146.99 D44IK $28.99 Call
D44-538F 5.38 RC**$160.99 D44IK $28.99 Call
*Standard Cut **Reverse Cut
DANA 60
D60-410 4.10 $174.99 D60IK $39.99 RA29RT $109.99
D60-456XF4.56* RC/T*$179.99 D60IK $39.99 RA29RT $109.99
D60-488XF4.88* RC/T*$179.99 D60IK $39.99 RA29RT $109.99
D60-513 5.13 $179.99 D60IK $39.99 RA29RT $109.99
*Reverse Cut - Thick
FORD 7.5
F7.5-373 3.73* $159.99 F7.5IK $25.99 R7.5FRT $64.99
F7.5-410 4.10* $159.99 F7.5IK $25.99 R7.5FRT $64.99
*Requires F7.5 CS Cross Shaft $38.75
The Motivator
These quality gears are of 8620 material. Perfect for off-road or lifted truck applications, Fully
heat treated and fully warrantied by Motive Gear. Installation instructions included
GM 8.5 - 10 Bolt
Part# Installation Bearing
Number Ratio Price Kit Price Kit Price
GM10-342A 3.42 $129.99 GM8.5IK* $37.99 R10RT* $64.99
GM10-373A 3.73 $129.99 GM8.5IK* $37.99 R10RT* $64.99
GM10-411A 4.11 $129.99 GM8.5IK* $37.99 R10RT* $64.99
GM10-456A 4.56 $129.99 GM8.5IK* $37.99 R10RT* $64.99
*98 and older, kits are for rear
GM 8 7/8 - 12 Bolt Truck
GM12-342A 3.42 $129.99 GM12IK $25.99 R12RT $59.99
GM12-373A 3.73 $129.99 GM12IK $25.99 R12RT $59.99
GM12-411A 4.11 $129.99 GM12IK $25.99 R12RT $59.99
GM12-456A 4.56 $129.99 GM12IK $25.99 R12RT $59.99
This gear set the standard before there was one. Manufactured with material that exceeds 8620 specs.
Perfect for car or truck applications and fully warrantied against manufacturer defect. Excellent OE
replacement gear set. Installation instructions included.
FORD 8.8
Part# Installation Bearing
Number Ratio Price Kit Price Kit Price
F8.8-355 3.55 $159.99 F8.8IK $24.99 R8.8RT $64.99
F8.8-373 3.73 $160.99 F8.8IK $24.99 R8.8RT $64.99
F8.8-410 4.10 $159.99 F8.8IK $24.99 R8.8R $64.99
FORD 10.25 STERLING
F10.25-355 3.55 $199.99 F10.25IK $41.99 R10.25R $119.99
F10.25-373 3.73 $199.99 F10.25IK $41.99 R10.25RT $129.99
F10.25-410 4.10 $199.99 F10.25IK $41.99 R10.25RT $129.99
F10.25-456 4.56 $199.99 F10.25IK $41.99 R10.25RT $129.99
GM 7.5 (NON B) CAR
GM7.5-342 3.42 $149.99 GM7.5IK $29.99 R7.5GRT $59.99
GM7.5-373 3.73 $149.99 GM7.5IK $29.99 R7.5GRT $59.99
GM7.5-410 4.10 $149.99 GM7.5IK $29.99 R7.5GRT $59.99
GM 12 BOLT TRUCK 8 7/8
3.73 AND NUMERICALLY HIGHER
GM12-308 3.08 $149.99 GM12IK $37.99 R12RT $59.99
GM12-342 3.42 $149.99 GM12IK $37.99 R12RT $59.99
GM12-373 3.73 $149.99 GM12IK $37.99 R12RT $59.99
GM12-411 4.11 $159.99 GM12IK $37.99 R12RT $59.99
GM12-456 4.56 $159.99 GM12IK $37.99 R12RT $59.99
GM 9.5 - 14 BOLT - REAR
GM9.5-342 3.42 $189.99 GM9.5IK $59.99 R9.5GRT $92.99
GM9.5-410 4.10 $189.99 GM9.5IK $59.99 R9.5GRT $92.99
GM9.5-456 4.56 $189.99 GM9.5IK $59.99 R9.5GRT $92.99
GM 10.5 - 14 BOLT
4.56 AND NUMERICALLY HIGHER
GM10.5-410 4.10 $194.99 GM10.5IK $42.99 Call
GM10.5-456 4.56 $199.99 GM10.5IK $42.99 Call
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