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Precision Rear Window Weatherstrip Seal Kit, 2 Piece Kit WKT 4266 S GM

Precision Rear Window Weatherstrip Seal Kit, 2 Piece Kit WKT 4266 S GM
Precision Rear Window Weatherstrip Seal Kit, 2 Piece Kit WKT 4266 S GM
$128.99 kt
NEWARRIVING SOONEstimated Ship Date 11/27/2025 (If Ordered Today)
Model: 3038163
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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A precision-molded, 2-piece rear window weatherstrip seal kit engineered to restore the original sealing performance on GM rear glass openings. The kit replaces deteriorated or missing rubber seals to prevent water intrusion, wind noise, and air leaks while returning a clean, OEM-style appearance. Constructed from durable, UV- and ozone-resistant rubber with a form-fit design, this kit helps maintain interior comfort and protect trim and sheetmetal from moisture damage. Designed for GM rear window applications—verify fitment for your specific year, make, and model before installation.
Features:
  • Two-piece kit designed for GM rear window openings; confirm fitment for the exact year and model.
  • Precision-molded rubber resists UV, ozone and weathering for long service life.
  • Restores factory-style sealing to prevent leaks, reduce road noise, and protect interior trim.
  • Easy to install with basic hand tools; designed for an OEM-like fit and finish.
  • Ideal for restoration projects or replacing brittle, cracked factory weatherstrips.
  • Helps preserve vehicle value by maintaining correct sealing and appearance.
Installation / Application:
  • Difficulty: 2/5
  • Estimated time: 30-60 minutes
Suggested Tools:
  • flat trim pry tool
  • screwdriver set
  • weatherstrip adhesive (recommended)
  • clean rags
  • isopropyl alcohol or dedicated surface cleaner
  • rubber mallet or block of wood
  • utility knife or scissors
  • masking tape
  • gloves
Instructions:
  1. Park vehicle on level ground and remove rear glass trim or interior trim as required to access the old weatherstrip.
  2. Carefully pry out and remove the old weatherstrip pieces using a trim pry tool; retain any reusable clips or retainers.
  3. Thoroughly clean the channel and surrounding surfaces with isopropyl alcohol or a suitable cleaner to remove dirt, adhesive and residue; allow to dry.
  4. Dry-fit each new weatherstrip piece to the window opening to confirm orientation and fit before applying adhesive.
  5. If adhesive is recommended, apply a thin, even bead of weatherstrip adhesive to the channel or flange per adhesive instructions.
  6. Starting at one corner, press the weatherstrip into the channel and work around the opening, ensuring the retaining lip seats fully; use a rubber mallet or block of wood to gently seat the seal if needed.
  7. Trim any excess material for a neat finish and recheck that the seal sits uniformly with no kinks or gaps.
  8. Reinstall any trim or hardware that was removed and allow adhesive to cure per the adhesive manufacturer's instructions before exposing to water or heavy use.
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
Chevrolet 3100 1959
Chevrolet 3B 1959
Chevrolet 3C 1959
Chevrolet 3D 1959
Chevrolet 3E 1959
Chevrolet 3F 1959
Chevrolet 3G 1959
Chevrolet BG 1943
Chevrolet BJ 1942
Chevrolet BK 1942 - 1946
Chevrolet BL 1942 - 1945
Chevrolet BM 1942 - 1945
Chevrolet BN 1942 - 1945
Chevrolet C10 Pickup 1960 - 1966
Chevrolet C20 Pickup 1960 - 1966
Chevrolet C30 Pickup 1960 - 1966
Chevrolet C40 1960 - 1962
Chevrolet C50 1960 - 1966
Chevrolet CK 1946
Chevrolet DP 1946
Chevrolet DR 1946
Chevrolet DS 1946
Chevrolet K10 Pickup 1960 - 1966
Chevrolet K20 Pickup 1960 - 1966
Chevrolet Truck 1942 - 1958
GMC 1000 Series 1960 - 1965
GMC 1000 1966
GMC 1500 Series 1960 - 1965
GMC 1500 1966
GMC 2500 Series 1960 - 1965
GMC 2500 1966
GMC K1000 Pickup 1966
GMC K1000 1966
GMC K15/K1500 Pickup 1966
GMC Truck 1945 - 1959

Specifications:

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

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