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1978-88 Regal, Malibu, Monte Carlo, Cutlass, Grand Prix, T-Top Header Panel, with RH & LH Weatherstrip Retainer Channels, with 8 Weatherstrip Studs

1978-88 Regal, Malibu, Monte Carlo, Cutlass, Grand Prix, T-Top Header Panel, with RH & LH Weatherstrip Retainer Channels, with 8 Weatherstrip Studs
1978-88 Regal, Malibu, Monte Carlo, Cutlass, Grand Prix, T-Top Header Panel, with RH & LH Weatherstrip Retainer Channels, with 8 Weatherstrip Studs1978-88 Regal, Malibu, Monte Carlo, Cutlass, Grand Prix, T-Top Header Panel, with RH & LH Weatherstrip Retainer Channels, with 8 Weatherstrip Studs
$264.99 ea
NEWARRIVING SOONEstimated Ship Date 08/05/2026 (If Ordered Today)22 Available from our supplier as of 07/20/2026
Model: 5057190
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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Reproduction T-top header panel with weatherstrip retainer channels for 1978-87 Regal, Type T, Limited, Grand National, and other GM G-Body models equipped with factory t-tops. Manufactured in a 1.0mm panel, each panel has been produced in a heavier gauge steel to strengthen and stabilize the T-Top roof structure. Replaces the original 0.638mm panel, OE part numbers # 20087922 header panel, and features the # 20084307 LH retainer, # 20084308 RH retainers welded into place. This panel features the 8 weatherstrip studs welded into place to make installation of the weatherstrip more convenient and original. For a panel without the studs, refer to part # GN110048.

Buick Applications:
  • 1978-1987 Buick Regal (with T Top)
  • 1983-1987 Buick T-Type (with T Top)
  • 1982-1982 Buick Grand National (with T Top)
  • 1984-1987 Buick Grand National (with T Top)
  • 1987-1987 Buick GNX (with T Top)
Chevrolet Applications:
  • 1978-1983 Chevrolet Malibu (with T Top)
  • 1978-1988 Chevrolet Monte Carlo (with T Top)
Pontiac Applications:
  • 1978-1987 Pontiac Grand Prix (with T Top)
Oldsmobile Applications:
  • 1978-1988 Oldsmobile Cutlass (with T Top)

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
Buick Regal 1978 - 1987
Chevrolet Malibu 1978 - 1983
Chevrolet Monte Carlo 1978 - 1988
Oldsmobile Cutlass Calais 1982 - 1988
Oldsmobile Cutlass Ciera 1983
Oldsmobile Cutlass Supreme 1982 - 1988
Oldsmobile Cutlass 1978 - 1988
Pontiac Grand Prix 1978 - 1987

Specifications:

Height 51 in
Length 2 in
Weight 9 lbs
Width 6 in

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1978-88 Regal, Malibu, Monte Carlo, Cutlass, Grand Prix, T-Top Header Panel, with RH & LH Weatherstrip Retainer Channels, with 8 Weatherstrip Studs: