What this part adds to the installation

• A 17-inch mast provides the replacement length specified by Metra.
• The spiral shaft gives this antenna its distinctive wound exterior profile.
• Black finish keeps the mast and its base visually consistent.
• Eight included adapters provide several factory-base connection options.
• Designed to fit compatible factory antenna bases, keeping the replacement centered on the existing mount.

Match the mast to the existing mount

Check the original base and adapter threads before ordering. Metra does not publish a usable adapter thread chart for this SKU. The page also mentions a damaged-OEM-antenna adapter without clear instructions; its repair method is not specified here.