Stant 10421 Fuel Tank Cap

Stant 10421 Regular Locking Fuel Cap

The Stant 10421 is a heavy-duty locking fuel tank cap built with a metal shell and vented design for dependable service. It includes OE-style safety features and comes with two keys, making it a practical choice for drivers looking for a secure replacement fuel cap.

Compatible With select vehicle fuel tank necks that use a 3.000-inch neck diameter and 4.000-inch shell diameter, this vented locking fuel cap is a direct-fit style solution for common fuel system service needs. Stant 10421 is a straightforward option for fuel cap replacement on applications that require a locking, vented metal cap.

Regular Locking Fuel Cap Line

Stant’s Regular Locking Fuel Cap line focuses on durable construction and safety-focused design. For buyers comparing fuel cap options for a Honda Civic, Toyota Corolla, or Ford F-150 application, the line is built to deliver a secure closure with the venting and safety features expected from an OE-style cap.

Key Features

• Part number: 10421
• Locking fuel tank cap with included keys
• Vented design for the specified fuel system application
• Metal construction with silver finish
• Cap depth: 2.125 in.
• Neck diameter: 3.000 in.
• Shell diameter: 4.000 in.
• No tether included

Detailed Description

Stant 10421 is a regular locking fuel cap engineered for long service life and secure fuel tank closure. Its metal construction and vented configuration make it a solid replacement choice where a locking cap is required, while the OE-style safety features help maintain the original fuel system function. If you are searching for a locking fuel cap for Honda Civic, Toyota Corolla, or Ford F-150 fuel tank service, this part number 10421 is a focused replacement option.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues It Can Help Solve

• Missing or damaged fuel cap
• Fuel cap that no longer locks securely
• Vapor seal concerns caused by a worn cap
• Fuel tank closure problems on vented cap applications
• Need for a replacement cap with OE-style safety features

Installation Notes and Tips

Verify the fuel filler neck diameter before ordering and confirm the cap matches the vehicle’s vented, locking configuration. Check that the cap seats fully and locks smoothly after installation. For fitment-based searches, use the vehicle’s year, make, and model along with part number 10421 to confirm the correct fuel cap replacement.

Quality Assurance

Stant builds this fuel cap with safety features aligned with original equipment expectations and a durable metal design for long-term use. Part number 10421 is intended for applications that require a vented locking fuel cap with a 3.000-inch neck diameter and 4.000-inch shell diameter.