Please check notes in each part listing to ensure the Fuel Cap Tester Adapter is correct for your 2003 MERCEDES-BENZ G55 AMG with a 5.5L 5439cc 335 engine. STANT & GATES are competing brands, and each brand's Fuel Cap Tester Adapter may be interchangeable. Special restrictions like "California only" or "with sport package" may indicate a Fuel Cap Tester Adapter fits only certain 2003 MERCEDES-BENZ G55 AMG models.

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After choosing a Fuel Cap Tester Adapter, click the "Add Part" button. Shipping costs will be shown on the Shopping Cart page. You may use your browser's Back button, or click on "Find More Parts", to find more Fuel/Air parts, other MERCEDES-BENZ G55 AMG parts, or parts for a different vehicle. Please try our Interactive Catalog (click red Start button above) for faster searching. Both catalogs use the same shopping cart, so any auto parts you've already chosen for your 2003 MERCEDES-BENZ will not be lost if you switch.