Gates 31781 Fuel Tank Cap

Overview of Gates Regular Locking Fuel Cap 31781

The Gates Regular Locking Fuel Cap 31781 is designed to provide secure fuel tank sealing for select Audi and Volkswagen models. Featuring a threaded cam type and vacuum-only venting, this fuel tank cap ensures proper fuel system pressure management while preventing unauthorized access.

• Lockable design for enhanced security
• Thread diameter of 1.77 inches for precise fit
• Shell diameter measures 2.91 inches
• Depth of 2.61 inches for compatibility with OEM fuel filler necks
• Vacuum-only venting to maintain fuel system integrity
• Threaded cam type for reliable sealing

Detailed Product Description

The Gates Regular Locking Fuel Cap 31781 is engineered to meet the specifications required by various Audi and Volkswagen vehicles, including models such as the Audi A3, A4, A6, A8, TT, and Volkswagen Golf, Jetta, Passat, and Beetle. This fuel tank cap features a lockable mechanism to prevent fuel theft and tampering, making it suitable for vehicles where security is a priority. The cap’s threaded cam type ensures a tight and secure fit, while the vacuum-only venting system helps maintain proper pressure within the fuel tank, which is critical for engine performance and emissions control.

About the Regular Locking Fuel Cap Product Line

The Gates Regular Locking Fuel Cap product line focuses on providing secure, reliable fuel caps with locking features for a range of vehicles. This line is designed to offer OEM-equivalent fit and function, ensuring compatibility with factory fuel filler necks. The locking mechanism adds an extra layer of security, which is especially important for vehicles prone to fuel theft or vandalism. The 31781 part number represents a model within this line tailored for specific Audi and Volkswagen applications.

Common Applications and Problem Solving

• Prevents unauthorized fuel access and theft
• Maintains proper vacuum pressure in the fuel tank
• Prevents fuel evaporation and vapor leaks
• Ensures a secure seal to avoid check engine light triggers related to fuel system leaks
• Compatible replacement for worn or damaged OEM fuel caps on select Audi and Volkswagen models

Installation Notes and Tips

• Ensure the fuel filler neck threads are clean before installation
• Align the cap properly and tighten until the locking mechanism engages
• Test the locking function after installation to confirm security
• Do not overtighten to avoid damage to the cap or filler neck threads
• Refer to vehicle owner’s manual for any specific fuel cap replacement instructions

Quality Assurance and Warranty

Gates manufactures the Regular Locking Fuel Cap 31781 to meet strict quality standards, ensuring durability and reliable performance. While specific warranty details are not provided here, Gates products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Using a genuine Gates fuel cap helps maintain vehicle fuel system integrity and compliance with emissions regulations.