Gates 31843Y Fuel Tank Cap

Overview of Gates Flex Fuel Regular Fuel Cap 31843Y

The Gates Flex Fuel Regular Fuel Cap 31843Y is designed to provide reliable sealing and venting for fuel tanks in select GM vehicles. Its yellow color and quick-on cam type make it easy to identify and install, ensuring proper fuel system performance for models like the Chevrolet Silverado and Cadillac Escalade.

• Color: Yellow for easy identification
• Type: Flex fuel regular fuel cap suitable for flex-fuel vehicles
• Thread Diameter: 1.56 inches for secure fitment
• Depth: 2.05 inches
• Shell Diameter: 2.75 inches
• Venting: Vacuum only to maintain proper tank pressure
• Cam Type: Quick-on for fast and secure installation
• Non-lockable design

Detailed Product Description

The Gates Flex Fuel Regular Fuel Cap 31843Y is engineered specifically for use with flex-fuel compatible vehicles from Buick, Cadillac, Chevrolet, and GMC. This fuel tank cap features a vacuum-only venting system that helps maintain the correct pressure inside the fuel tank, preventing vapor leaks and ensuring optimal fuel system operation. The quick-on cam type allows for easy and secure attachment without the need for locking mechanisms. With a thread diameter of 1.56 inches and a shell diameter of 2.75 inches, this cap fits a range of GM models including the Chevrolet Avalanche, Cadillac Escalade ESV, and GMC Sierra 1500 Classic.

The Flex Fuel Regular Fuel Cap product line by Gates is designed to meet the specific needs of vehicles running on ethanol blends and regular gasoline. This ensures compatibility with flex-fuel systems while maintaining fuel containment and vapor control standards required by manufacturers.

Common Applications and Problem Solving

• Replacement for lost or damaged fuel tank caps on compatible GM trucks and SUVs
• Prevents fuel vapor leaks that can trigger check engine lights
• Maintains proper vacuum pressure in the fuel tank to support fuel pump operation
• Helps avoid fuel contamination by providing a secure seal
• Ensures compliance with emissions regulations by controlling evaporative emissions

Installation Notes and Tips

• Ensure the fuel tank opening is clean and free of debris before installation
• Align the cap threads carefully and turn clockwise until the quick-on cam locks securely
• Do not overtighten to avoid damaging the cap or fuel tank threads
• Check for proper seating to prevent fuel vapor leaks

Quality Assurance and Warranty

Gates manufactures the Flex Fuel Regular Fuel Cap 31843Y to meet OEM specifications for fit, form, and function. While specific warranty details are not provided, Gates products typically adhere to industry standards for durability and performance. This fuel cap is designed to provide consistent sealing and venting performance for the life of the vehicle when installed and maintained properly.