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Precision Rear Door Weatherstrip Seal, Left or Right DWB 3120 02

Precision Rear Door Weatherstrip Seal, Left or Right DWB 3120 02
Precision Rear Door Weatherstrip Seal, Left or Right DWB 3120 02
$53.11$81.99 ea
NEWLOW STOCK ALERT!Only 1 Left in Stock
Model: 3943031
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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A direct-fit rear door weatherstrip designed for left or right installation (part number DWB 3120 02). This exterior-grade seal replaces worn or damaged door seals to restore a tight barrier against water, wind, dust, and road noise. Made from a premium weather-resistant rubber compound, the seal maintains flexibility across temperature extremes and resists compression set and UV degradation. It aligns to the factory channel for reliable sealing and improved cabin comfort while helping prevent doorframe corrosion and interior water damage. Verify fitment by cross-referencing part number DWB 3120 02 with your vehicle’s service guide.
Features:
  • Direct replacement for part number DWB 3120 02; fits left or right rear door applications — verify with vehicle fitment guide.
  • Manufactured from weather-resistant rubber for long-lasting durability and resistance to UV, ozone, and temperature extremes.
  • Seals out water, wind, dust, and road noise to improve cabin comfort and prevent interior damage and corrosion.
  • Flexible profile conforms to factory channel for proper alignment and compression without excessive drag on the door.
  • Push-in style installation for an easier replacement; retains original fit and finish for restoration projects.
  • Designed to resist compression set for consistent sealing performance over time.
Installation / Application:
  • Difficulty: 2/5
  • Estimated time: 30-60 minutes
Suggested Tools:
  • Trim panel removal tool or flat plastic pry tool
  • Phillips or Torx screwdriver (as required for your door panel)
  • Razor blade or utility knife (for trimming old adhesive)
  • Isopropyl alcohol or adhesive cleaner and clean rags
  • Weatherstrip adhesive (if required by vehicle)
  • Needle-nose pliers or clip pliers
  • Lubricant (silicone spray) for easier seating
Instructions:
  1. Park vehicle on a level surface, lower the window, and disconnect the negative battery cable if needed for power components.
  2. Remove the interior door panel and any trim pieces that obstruct access to the weatherstrip channel following your vehicle’s service manual.
  3. Carefully peel out the old weatherstrip, remove any retaining clips, and cut away old adhesive or sealant with a razor blade.
  4. Clean the channel and surrounding surface thoroughly with isopropyl alcohol or adhesive cleaner and allow to dry.
  5. Test-fit the new weatherstrip along the door edge to confirm orientation and length. Trim excess with a sharp blade if necessary.
  6. If the vehicle requires adhesive, apply a thin, even bead of OEM-recommended weatherstrip adhesive to the channel or the seal’s mounting surface per adhesive instructions.
  7. Press the new weatherstrip firmly into the channel, working from one end to the other and ensuring corners and curves seat fully. Use light heat (hair dryer) in cold weather to increase flexibility if needed.
  8. Reinstall any retaining clips, trim pieces, and the door panel. Lubricate the seal with silicone spray to prevent squeaks and aid final seating.
  9. Close and open the door several times to check alignment and sealing. Adjust as needed and allow adhesive to cure per manufacturer recommendations before exposing to water.
About Precision Replacement Parts

Since 1986 Precision Replacement Parts has been a trusted name in the Automotive Glass Industry.

Our knowledge and experience in manufacturing millions of extruded and molded EPDM Rubber, PVC and HDPE based plastics, and various stamped and extruded metal products for the classic and late model industries has allowed Precision to expand our services into multiple product markets.

Along with our own USA based production facility, Precision also partners with 25 different manufactures worldwide with a reputation as a global leader supplying OEM and replacement products to a number of different industries.  Our partnerships along with our own in-house manufacturing and fabrication capability gives Precision a unique position in helping to meet the expanding needs of customers everywhere, providing them with a sustained competitive advantage.

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years
Dodge Ram 1500 2002 - 2008
Dodge Ram 2500 2003 - 2008
Dodge Ram 3500 2003 - 2008

Specifications:

Part Type Door Seal
Proposition 65 www.P65Warnings.ca.gov
Warranty Lifetime on Defects TX

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