These high quality replacement weather seals (weatherstripping) are manufactured using precise CAD engineering and CNC milling to ensure proper 3D contouring and construction, ensuring a perfect fit and OEM quality appearance.  These replacement weather seals feature a very smooth skin, free of exposed cells or flaws.  The replacement weatherstripping products offered here are composed of micro-closed cells that are uniform in size, providing even compression and sealing.  This weatherstripping is guaranteed for a full 15 years; see our Warranty page for more details.
Weather seals (weatherstripping) are used along openings to ensure that water and debris do not enter the vehicle, and weatherstripping also provides noise-dampening benefits along with sealing against unwanted airflow. The weather seals offered here are manufactured by the leading weatherstripping manufacturers in the USA.
This replacement weatherstripping is designed specifically for 1970 thru 1972 Plymouth Duster & Valiant (A Body) 2-Door Hardtop Fastback models.
Weather seals and weatherstripping sold by TopsOnline includes a 15-year Warranty to the original purchaser. Should the product fail due to any manufacturing defects, a replacement product will be provided by the manufacturer. Please see our Warranty page for more details.
(1) What vehicles are these replacement weather seals designed to fit?

These replacement weather seals are designed for 1970, 1971, and 1972 Plymouth Duster and Plymouth Valiant A-Body 2-door hardtop fastback models. The weatherstripping is engineered specifically for the hardtop/fastback body style used on these Mopar A-Body vehicles and may not fit sedans, convertibles, or other body configurations. Proper fitment ensures the seals align with the factory door frames and roof rails of these classic Plymouth models.
(2) What types of weatherstripping are available for the 1970-1972 Plymouth A-Body hardtop fastback?

For this model, we offer the following replacement weather seal components :

Molded door seals for both driver and passenger sides

Roof rail seals that run along the upper door frame and roofline

Each component is engineered to match the original sealing locations on 1970-1972 A-Body hardtop fastbacks, helping restore proper protection against water, wind, and debris.
(3) Do these weather seals provide an OEM-style fit for classic Mopar A-Body cars?

Yes. Replacement weatherstripping for 1970–1972 Plymouth Duster and Valiant hardtop fastbacks is manufactured using modern tooling such as CAD design and CNC-machined molds to replicate the original factory seal shapes. This process helps ensure accurate contours and proper sealing surfaces so the weatherstrips fit and function similarly to the original Mopar components.
(4) Why should weatherstripping be replaced on a 1970–1972 Plymouth Duster or Valiant?

Over time, the factory rubber seals on classic vehicles can dry out, crack, or lose elasticity. Replacing worn weather seals on 1970–1972 Plymouth Duster and Valiant A-Body fastback models helps:

Prevent water leaks around doors, windows, and trunk areas

Reduce wind noise and air infiltration while driving

Protect the interior from dust and moisture

Improve the overall seal and alignment of windows and doors

High-quality replacement weatherstrips are designed with micro-closed cell rubber construction, which provides consistent compression and reliable sealing performance.
(5) Is there a warranty or guarantee?

Yes. The door seals include a 15-year warranty to the original purchaser against manufacturing defects. Please see our Warranty page for specifics.
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