Motorad MGC208KA Fuel Tank Cap

Motorad Keyed Alike Fuel Tank Cap

The Motorad MGC208KA fuel tank cap is built for direct replacement on a wide range of GM and Saturn applications. It uses a locking design with emission-control venting to help seal the fuel system and maintain proper tank pressure.

Designed for vehicles such as the Chevrolet Volt, Buick Century, and Pontiac Grand Prix, this black plastic cap is made to OE-quality standards and supports state and federal emissions requirements.

Key Features

• Locking fuel tank cap with keyed-alike operation
• Emission-control venting with pressure and vacuum relief valves
• Black plastic construction
• Cap depth: 2.500 in
• Neck diameter: 1.563 in
• Shell diameter: 2.938 in
• Direct replacement part number: MGC208KA

Product Details

Motorad’s Keyed Alike line is built for applications where multiple caps can be matched to the same key pattern, simplifying service across vehicles that use the same locking fuel cap design. The MGC208KA is engineered as an OE-supplier replacement with materials and safety standards aligned to original equipment expectations. Its pressure and vacuum relief valves are designed to control fuel vapor loss and maintain proper sealing performance. This part cross-references Carlson 17506 for the same application.

Vehicle Applications

• Fits 2011-2012 Chevrolet Volt, N/A; Black Cap; Includes 1 cap, same key. Multiples available; Keyed Alike
• Fits 1997-2005 Buick Century, N/A; Black Cap; Includes 1 cap, same key. Multiples available; Keyed Alike
• Fits 1998-2005 Pontiac Grand Prix, N/A; Black Cap; Includes 1 cap, same key. Multiples available; Keyed Alike
• Fits 2002-2004 Chevrolet Trailblazer, N/A; Black Cap; Includes 1 cap, same key. Multiples available; Keyed Alike
• Fits 1998-2003 Chevrolet Express 1500, N/A; Black Cap; Includes 1 cap, same key. Multiples available; Leaded Fuel System; Keyed Alike
• Fits 2002-2003 Saturn Vue, N/A; Black Cap; Includes 1 cap, same key. Multiples available; with Metal Filler Door; Keyed Alike

Common Problems This Part Addresses

• Fuel vapor escaping through a worn or leaking cap
• Check engine light concerns related to EVAP sealing issues
• Difficulty securing the fuel tank opening with a damaged locking cap
• Loss of proper pressure or vacuum control in the fuel system
• Replacement needs for keyed-alike fleet or multi-vehicle service

Installation Notes and Quality Assurance

Verify neck diameter, shell diameter, and locking style before installation. Confirm the vehicle uses emission-control venting and match the application notes, including filler-door and leaded-fuel-system exceptions where listed. The cap installs at the fuel filler opening and should seat fully before the key is turned to lock it in place.

Motorad manufactures this cap as an OE-supplier replacement using OEM-quality materials and emissions-focused design standards. It is built to meet state and federal emissions requirements and to provide controlled pressure and vacuum relief for the fuel system.