Motorad MGC846 Fuel Tank Cap

Motorad MGC846 Locking Fuel Tank Cap

The Motorad MGC846 is a black locking fuel tank cap built with plastic construction and non-vented operation. It is designed for 1998 Chevrolet Camaro and 1998 Pontiac Firebird applications, with pressure and vacuum relief features that help control fuel vapor loss and support emissions compliance.

Key Features

• Locking fuel tank cap for added security
• Black plastic construction
• Non-vented design
• Pressure and vacuum relief valves help reduce evaporation
• Built to meet state and federal emissions requirements
• OE supplier manufacturing standards and materials
• Fits 1998 Chevrolet Camaro, N/A
• Fits 1998 Pontiac Firebird, N/A

Product Details

Motorad Standard MGC846 is a direct-fit fuel tank cap for select GM performance coupes, including the 1998 Chevrolet Camaro and 1998 Pontiac Firebird. The locking design helps secure the fuel system, while the non-vented configuration and engineered relief valves are intended to maintain proper tank pressure and vacuum balance. With a 1.765-inch thread diameter, 1.563-inch neck diameter, and 2.75-inch shell diameter, this cap is built around the listed OE-style dimensions for a precise fit.

The Motorad Standard line focuses on replacement fuel system hardware made to OE-style specifications for everyday service use. This part number, MGC846, is part of that standard replacement range and is cross-referenced with AMS Automotive 6846 and CSF 10846 for the same application.

Common Issues This Cap Can Address

• Loose or damaged fuel cap sealing
• Fuel vapor escape from a worn cap
• Check engine light concerns related to evaporative emissions faults
• Difficulty maintaining proper tank pressure or vacuum balance
• Loss of fuel system security from a non-locking cap

Installation Notes and Tips

Verify the neck diameter, thread diameter, and non-vented locking style before installation. Confirm the vehicle application against the listed fitment for 1998 Chevrolet Camaro and 1998 Pontiac Firebird. Inspect the filler neck sealing surface for damage or debris so the cap can seat correctly and maintain a proper seal.

Quality Assurance

Manufactured by an OE supplier using OEM-quality materials and safety standards, the Motorad MGC846 is built to pass state and federal emissions requirements. Its relief-valve design is intended to help limit fuel evaporation and support consistent fuel system sealing.