Toyota Adjustable Rear Seat Jackers (1995-2004 Tacoma / 1996-2002 4Runner) — Install Guide

Important Note

To help prevent cross-threading during installation, verify bolts and threads by taking the applicable bolts and threading them into the corresponding holes by hand. Do not force the bolts.

Step 1 — Remove the Factory Bolts

1. Remove any plastic covers to access the seat bolts.
2. Remove the two rear factory seat base bolts using a 14mm socket.
3. Loosen the two front seat bolts, but do not remove them.

Step 2 — Lift the Seat

1. Lift the rear of the front seat by pushing forward on the headrest.
2. Alternatively, have a helper pull upward from the front of the seat.

Step 3 — Install the Transmission Tunnel Seat Jacker

1. Take the rectangular Seat Jacker and position it with the threaded holes facing up.
2. Loosely thread the longer fine-thread black bolt through the countersunk hole and into the transmission tunnel.

Step 4 — Select the Rear Lift Height

1. Rotate the Seat Jacker to align with the seat rail mounting hole.
2. Confirm the desired lift height:
   • Lower hole: 0.75" rear lift
   • Upper hole: 1.25" rear lift
3. Torque the bolt that passes through the Seat Jacker and into the transmission tunnel to 27ft-lbs.

Step 5 — Install the Seat Rail Bolt

1. Loosely install the short coarse-thread black bolt through the seat rail and into the Seat Jacker.
2. Use the hole corresponding to your desired lift height:
   • Lower hole: 0.75" rear lift
   • Upper hole: 1.25" rear lift

Step 6 — Select the Door-Side Spacer Configuration

1. At the seat rail nearest the door, match the spacer configuration to the lift height selected at the transmission tunnel:
   • 0.75" lift: Use the single 0.75" spacer between the seat rail and floor.
   • 1.25" lift: Use both spacers between the seat rail and floor.

Note: The 0.75" spacer has a counterbore on one side. On some Tacoma models, there is a rubber bushing with a steel flange attached to the seat rail. The counterbore is designed to nest the steel flange into the spacer, allowing the rubber bushing to sit flush on the spacer.

IMPORTANT — If using both spacers:
Use the provided 70mm bolt.

Step 7 — Install the Door-Side Bolt

1. If using the 0.75" spacer, use the shorter 40mm bolt.
2. If using both spacers, use the longer 60mm bolt.

IMPORTANT — If the seat rail hole does not line up perfectly:
Lift the seat rail approximately 0.25 inches and start threading the bolt by hand a couple of turns. You may need to gently wiggle the entire seat frame to get the bolt to line up. Do not force or cross-thread the bolt.

Step 8 — Final Torque

1. Torque the front bolts and all rear bolts to 27ft-lbs.

Final Check

• Verify all seat bolts are properly installed and torqued to 27ft-lbs.
• Confirm the Seat Jacker and spacers are seated securely.
• Confirm the selected lift height is the same on both sides.
• Confirm all seat rail holes are properly aligned.
• Confirm the seat is securely mounted.

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