New Gas Cap Fuel Tank Cap 77300-06040 77300-52040 for Scion Lexus Toyota US

Gas Cap Fuel Tank Cap for Scion, for Lexus, and for Toyota

This gas cap fuel tank cap seals the fuel filler neck to prevent the escape of vapors and protect the fuel supply from debris, cross-referencing part numbers 77300-06040 and 77300-52040.

Overview

The gas cap fuel tank cap creates a pressurized seal for the fuel reservoir to ensure the evaporative emissions system functions correctly. This gas cap fuel tank cap serves as a replacement for worn or damaged original components that no longer provide an airtight fit. This gas cap fuel tank cap is a vital component for maintaining fuel efficiency and preventing environmental leaks.

Built For Performance

• Threaded assembly for secure installation.
• Heavy-duty rubber gasket to prevent fuel leaks.
• Durable composite housing resists fuel additives.
• Standardized dimensions for a reliable seal.
• Engineered to help clear emission-related warning lights.

Fits These Machines

• for Scion
• for Lexus
• for Toyota

On-The-Job Use

• Securing the fuel system during daily vehicle operation.
• Replacing a cracked or brittle cap during maintenance.
• Ensuring the fuel tank remains pressurized for the fuel pump.
• Preventing dust and moisture from entering the fuel supply.

Specs At A Glance

Good To Know

Q: What causes a fuel cap to trigger a check engine light? A: If the gasket is cracked or the cap is loose, the vacuum in the fuel system is lost, causing the vehicle computer to report a leak. A new cap restores this vacuum and allows the system to reset.

Q: Can a faulty cap affect fuel economy? A: Yes, because an improperly sealed tank allows fuel to evaporate into the atmosphere rather than being used by the engine. Installing a new cap helps keep fuel inside the tank where it belongs.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.