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Shop Wrangler YJ Drivetrain Parts
After upgrading your Wrangler YJs drivetrain, make sure you torque the nuts and bolts to suggested torque specs.
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Wrangler YJ Drivetrain Torque Specs
Wrangler YJ Cooling System Torque Specs
Typically these specs aren’t going to be needed unless you are replacing a water pump, thermostat, or fan.
|
Description |
Specification |
|---|---|
|
Fan Clutch To Water Pump Bolts (2.5L) |
15-22 ft-lbs |
|
Water Pump Attaching Bolts (2.5L) |
13 ft-lbs |
|
Fan Clutch To Water Pump Bolts (4.0L/4.2) |
18 ft-lbs |
|
Water Pump Attaching Bolts (4.0L/4.2) |
9-18 ft-lbs |
|
Thermostat Housing Bolts |
13 ft-lbs |
|
Fan To Fan Clutch Nuts |
18 ft-lbs |
Wrangler YJ Fuel System Torque Specs
TBI stands for Throttle Body Injection, MPI stands for Multi-Point Injection. Your Wrangler with either have a Carburetor, TBI, or MPI for its fuel delivery.
|
Description |
Specification |
|---|---|
|
Mechanical Fuel Pump Mounting Bolts |
13-19 ft-lbs |
|
Carburetor To Intake Manifold Mounting Nuts |
13-19 ft-lbs |
|
(TBI) Throttle Body Mounting Nuts |
16 ft-lbs |
|
(MPI) Throttle Body Mounting Nuts |
108 in-lbs |
Wrangler YJ Manual Transmission Torque Specs
This table includes specs for several manual transmissions. Unless indicated otherwise, each spec is used for all manual transmissions in YJ Wranglers.
|
Description |
Specification |
|---|---|
|
Drain/Fill Plug AX-4/5 |
32.5 ft-lbs |
|
Drain Fill Plug AX-1500 |
25 ft-lbs |
|
Drain/Fill Plug NV3550 |
14-20 ft-lbs |
|
Clutch Housing To Engine Bolts 3/8" |
27 ft-lbs |
|
Clutch Housing To Engine Bolts 7/16" |
43 ft-lbs |
|
Clutch Housing To Engine Bolts M12 |
55 ft-lbs |
|
Shift Lever Cover Bolts AX 4/5 |
15-13 ft-lbs |
|
Shift Lever Cover Bolts BA 10/5 |
17 ft-lbs |
|
Shift Lever Cover Bolts NV3550 |
75 in-lbs |
|
Clutch Master Cylinder Bolts (1987-1994) |
19 ft-lbs |
|
Clutch Master Cylinder (1995) |
26 ft-lbs |
|
Pressure-Plate To Flywheel Bolts (4.2L/4.0L) |
40 ft-lbs |
Wrangler YJ Automatic Transmission Torque Specs
This table includes specs for several automatic transmissions. Unless indicated otherwise, each spec is used for all automatic transmissions in YJ Wranglers.
|
Description |
Specification |
|---|---|
|
Filter Screws 30RH/32RH |
35 in-lbs |
|
Filter Screws 42RLE |
45 in-lbs |
|
Pan Bolts |
14 ft-lbs |
|
Front Band Adjuster Screw With Adapter |
36 in-lbs |
|
Front Band Adjuster Screw without Adapter |
72 in-lbs |
|
Rear Band Adjuster Screw |
72 in-lbs |
|
Bellhousing To Engine Bolts 10mm Bolts |
25 ft-lbs |
|
Bellhousing To Engine Bolts 12mm Bolts |
42 ft-lbs |
|
Neutral Start Switch |
24 ft-lbs |
|
Torque Converter To Driveplate Bolts |
40 ft-lbs |
Wrangler YJ Transfer Case Torque Specs
Whether you have the NP231 or the NP241 transfer case, you should be filling it with ATF 4. Be sure to check and see what transfer case you have so you use the correct drain plug spec, even though they are almost exactly the same.
|
Description |
Specification |
|---|---|
|
Drain/Fill Plug NP231 |
15-25 ft-lbs |
|
Drain/Fill Plug NP241 |
14-25 ft-lbs |
|
Transfer Case To Transmission Fasteners |
26 ft-lbs |
|
Speedometer Cable Adapter/Sensor Clamp bolt |
90-110 in-lbs |
|
Speed Sensor To Adapter Retaining Screw |
15-27 in-lbs |
Wrangler YJ Driveline Torque Specs
If you perform any service to your driveline, be sure to install everything in the correct position. Incorrect placement can cause excess vibrations from the driveline over a certain speed.
|
Description |
Specification |
|---|---|
|
Driveshaft U-Joint Strap Bolts |
14 ft-lbs |
|
Front Differential Pinion shaft Nut |
210 ft-lbs |
|
Rear Axle Pinion Shaft Lock Bolt |
14 ft-lbs |
|
Front Axle Shift Motor Housing Bolt |
108 in-lbs |
|
Front Axle Shaft Hub Nut |
175 ft-lbs |
|
Front Hub Assembly To Steering Knuckle Bolts |
75 ft-lbs |
|
Brake Backing Plate Nuts |
32 ft-lbs |
|
Rear Axle U-Bolt Nuts |
44-59 ft-lbs |
Wrangler YJ Brakes Torque Specs
The most common specs needed for brakes are typically for the caliper mounting pins. You will usually only need them if you are replacing your brake pads.
|
Description |
Specification |
|---|---|
|
Power Brake Booster Pushrod Inner Nuts (1987-1991) |
25 ft-lbs |
|
Power Brake Booster Pushrod Outer Nuts (1987-1991) |
75 in-lbs |
|
Power Brake Booster Mounting Nuts |
25-29 ft-lbs |
|
Master Cylinder Mounting Nuts |
15 ft-lbs |
|
Caliper Mounting Pins (1987-1989) |
25-35 ft-lbs |
|
Caliper Mounting Pins (1990-1995) |
132 in-lbs |
|
Wheel Cylinder Mounting Bolts |
84 in-lbs |
|
Wheel Speed Sensor Mounting Bolt |
90 in-lbs |