📡 OEM Upper Power Antenna Mounting Base Pad – MB 90 Factory Original | Reproduction | Precision Fit Up for sale is a reproduction of the OEM upper antenna mounting base pad designed specifically for 1957–1958 Pontiac Bonneville models equipped with the Power Antenna option. This pad features a 2-1/2" outer diameter and 1-1/4" inner diameter, ensuring a precise fit for your classic GM restoration. Ideal for replacing worn or missing antenna gaskets with a correct-spec part.

📐 Fitment Compatibility

• GM Brand: Pontiac

• Model: Bonneville

• Years: 1957, 1958

📦 Product Details

• Part Type: Upper Power Antenna Mounting Base Pad

• Dimensions: 2-1/2" O.D., 1-1/4" I.D

• Material: OEM-spec rubber or composite (verify condition if used)

• Condition: Reproduction – clean, correct profile, ready to install

⚠️ Important Notes

• Please verify fitment for your specific vehicle before purchasing

• No returns accepted on this item