ITEMS REQUIRED: Scissors, clean rag and soap solution.
Extreme temperatures will result in poor adhesive performance. Apply only if air and surface temperature is between 55° - 105°F (13° - 40°C). If 45° - 55°F (7° - 13°C). Avoid touching adhesive after peeling off red liner. Repositioning of seal should not be done more than 3 times and only once should the temperature be above 80°F (13°C).

Note: Enclosed 14" Large Tailgate Seal with Taper Seal® will only be used for STEP 6. Use enclosed adhesion promoter for STEP 7.

STEP 1
Clean area thoroughly with soap and water solution and wipe completely dry. Use alcohol pads to prep the tape application areas and let dry. Figures and pictures shown are for left side main tailgate and inner tailgate.

STEP 2: ATTACHING TO LEFT SIDEWALL OF MAIN TAILGATE
Start 1" (2.5 cm) below truck bed floor and attach seal to the rear corner edge of the left sidewall extension (FIG 2A). When nearing top of sidewall, gradually rotate seal go0 counter clockwise so that bulb is facing in-ward and the taped side of seal is flush with the sidewall at the top (FIG 2B). Cut to fit. Apply light pressure to adhesive. Duplicate for other sidewall. Do not close tailgate.

STEP 3: ATTACHING TO INSIDE TOP OF TAILGATE
Cut and attach a 2" (5.08cm) piece to the tailgate at the top, bulb side facing down. Apply light pressure to adhesive (FIG 3A and 3B). Duplicate for right side. Do not close tailgate.

For 2023 and newer 2500 and 3500: Do not attach to top of
tailgate. Cut a 2.750" length from Large Seal and apply, using light pressure, .750" down from top of bedrail. Flush adhesive at the top of Large Seal to the side of Standard Seal and adhere straight down. A slight curve is okay. Raise tailgate, but do not close, to make sure that the tailgate rail cover does not interfere with the top of Large Seal. Adjust as needed. Apply very firm pressure (25Ibs.). Duplicate for right side.

STEP 5: ATTACHING TO PERIMETER OF TAILGATE GAP FOR INNER TAILGATE
Open inner tailgate. Start at either side and begin attaching seal, bulb side facing outwards and recessed .750" (1.gcm) from edge (FIG 5A and 6A). Apply light pressure to adhesive. Gradually round corner (slight ripples will exist at the corners and will not affect performance) and recess seal .250" (0.635cm) from edge for entire horizontal length of tailgate gap. Gradually round corner on the other side and recess seal .750" (1.gcm) from edge. Cut to fit. Do not close tailgate.

STEP 9: ATTACHING TO HORIZONTAL GAP OF MAIN TAILGATE
Position bulb side down and adhere to the tailgate gap just below the lower lip area of the extended truck bed floor (FIG gA and gs). Start at either end and flush to seal on the sidewall. Peel liner and attach in sections, apply light pressure to adhesive. Flush with seal on other side and cut to fit. After seal is in place, apply very firm pressure (25/bs.) to secure the entire adhesive bond. If air temperature will fall between 50°F (10°C) within the next 24 hours or, if seals are attached to a surface other than paint, then leave tailgate(s) open for 24 hours.