NISSAN 4083 User Manual
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3
’98-’99 Frontier – Kit# 4083
screws are accessed through the wheel well. Remove the 
four bolts that mount the front bumper to the frame. 
Remove the bumper from the vehicle. 
 
13. Remove the tabs that hold the fender well flaps to 
frame. This will prevent flaps from being damaged while 
lifting. 
 
14. Remove the screws that mount the scuff plate to the 
door jamb area on both sides of the vehicle. Remove the 
kick panels from both sides. Place the manual 
transmission in neutral. Remove the screws that mount 
the shift boot to the floorboard. Pull the boot back to 
expose the top of the transmission. Remove the c-clip that 
holds the transmission shift lever in the top of the 
transmission. Remove the spacer washer that is under the 
C-clip. Unbolt the transfer case shifter from the transfer 
case. Remove both levers from the vehicle. You may 
want to wrap a rag around the bottom of the shift lever to 
prevent any oil from dripping on the carpet. Pull the 
carpeting back to expose the two body mounting bolt 
access covers. Remove the plastic access covers from 
the floorboard and discard. Be sure that the transmission 
is in neutral. Remove the shift lever from the transmission. 
 
WARNING
Use extreme caution when working near fuel lines and 
fuel tank. Clean up spilled fuel immediately. Any spark 
could cause an explosion or fire resulting in serious 
personal and property damage. 
 
15. Remove the screws that mount the fuel filler neck to 
the body. Loosen the hose clamp that mounts the filler 
hose to the fuel tank. Loosen the clamp that mounts the 
vent hose to the tank. Remove the entire filler neck and 
hose assembly from the vehicle. 
 
16. Disconnect the license plate lights from the rear 
bumper. Remove the six bolts that mount the rear bumper 
to the frame. Remove the bumper from the vehicle. 
 
17. Measure the distance between the cab and the bed. 
Record this measurement to insure proper alignment of 
the cab and bed after the lifting operation has been 
completed. Remove the bolts at the rear cab mount that 
mount the body to the side of the rear cab mount. There 
are two bolts inserted from the inside of the frame mount 
and are threaded into the body. There are two more bolts 
that are inserted from the bottom and thread into the 
mounting pad. When the rear cab bolt is removed, the 
bracket can be removed. Loosen, but do not remove all 
six cab-mounting bolts. They are located as follows; in the 
front fender well, in the front floorboard, and at the rear of 
the cab screwing up into the cab. The front two mounting 
bolts are installed from the top and the rear bolt is 
installed from the bottom. 
 
 
WARNING
Failure to replace the OEM body mounting hardware 
(except mounting bolts) in the stock locations could result 
in damage to the vehicle and possible personal injury. 
 
18. Using a hydraulic jack and a wooden block, slowly lift 
the passenger side of the cab just high enough to put the 
spacers on the mounting pads. Continually check for any 
hoses, wires, etc. to be sure that everything is flexing 
properly and not binding. Be especially careful of the a/c 
hose at the firewall and at the core support. Place the 
spacer block on top of the mounting pad. Using a 3/8" 
washer in conjunction with the stock washer, install the 
7/16" x 7" bolts at the front two mounts (core support and 
front floorboard) and the 10mm x 180mm bolt at the rear 
cab mount. For the front two mounts, the 3/8” washer 
should be installed on the bolt. The bolt should then be 
inserted from the top through the stock top washer, 
through the body, the spacer, the factory top bushing, the 
frame perch, the bottom factory bushing, the stock bottom 
washer and inserted into the 7/16” nylock nut provided 
with the kit. The 3/8” washer should be installed on the 
10mm bolt, the bolt should be inserted from the bottom 
through the outside support bracket, the bottom stock 
bushing, the frame perch, the stock top bushing, the 
block, and threading into the nut that is captured inside 
the body. Reinstall the two bolts that mount the outside 
support bracket to the bottom of the frame perch. Do not 
tighten any of the bolts at this time. 
 
19. Repeat step #18 for the driver’s side of the cab. Adjust 
the cab to bed clearance. Install the outside support 
plates to the cab using the stock bolts. Attach the outside 
support plates to the stock outside support brackets using 
two 7/16” x 1” bolts, four 7/16” SAE washers, and two 
7/16” nylock nuts on each side of the cab and tighten 
securely. Remove cab-mounting bolts, one at a time, 
apply Loctite
®, reinstall bolt and tighten to vehicle torque
specifications. 
 
20. Loosen, but do not remove all six bed-mounting bolts. 
Remove the mounting bolts from the passenger side of 
the bed only. Using a hydraulic jack and a wooden block 
slowly lift the passenger side of the bed just high enough 
to place the spacer blocks on the frame. Install the new 
mounting bolts in the following positions; ½ x 5” at the 
front bed mount, ½” x 4 ½” at the middle bed mount, and 
½ x 5 1/2" at the rear bed mount. The bolts should have a 
½” USS (large) washer installed and then the bolt should 
be inserted through the thick rubber bushing, through the 
frame, through the thin rubber bushing, through the 
spacer, and through the bottom support rail of the bed. 
Install a ½” USS washer and nylock nut on each bolt. Do 
not tighten at this time. 
 
21. Repeat step # 20 for the driver’s side of the bed. 
Realign the bed to the cab. Refer to the measurements