87/91  Transfer Case Vacuum Switch  (NP 231)

Vacuum

87/91  Extension  (NP 231)

Position: Rear

90/91  Speedometer Gear Kit  (NP 231)

For Use with NP 231 Transfer Case.When modifying your Jeep with larger tires or deeper gears the speedometer is often put out of calibration
These pinion gears easily put the speedometer back to it's factory settings allowing you to know your correct speed and mileage
Easy and quick to install in the transfer case tail housing, dont forget a new O-Ring to prevent leaks after the swap! Black
Includes 6 x Gears and 6 O-Rings
Various Ratios

87/91  Half Case  (NP 231)

Position: Rear

87/91  Transfer Case Chain  (NP 231)

31 Links
Check plate (pitch) length. 1990 & prior was 0.5000", 1991 & later had plate length of 0.5033". Our chains are currently made to the 0.5033" plate length.

87/91  Complete Install Kit for NP 231   (NP 231)

Includes All Bearings, Oil Seals, Gaskets and Fork Inserts

87/91  Front Output Shaft  (NP 231)

Position: Front

87/91  Planetary Gear  (NP 231)

1987/1990 - with Transfer Case ID 53006092, 53006093,
53006094, 53006095, 53006096, 53006191