Gates 31405 Radiator Cap

Overview of Gates OE Type Radiator Cap 31405

The Gates OE Type Radiator Cap 31405 is designed to maintain optimal pressure in your vehicle's cooling system. Engineered as a threaded coolant bottle cap, it ensures a secure seal for closed coolant recovery systems in select Buick, Cadillac, Chevrolet, Oldsmobile, Pontiac, and Saturn models.

• Threaded coolant bottle cap design for secure fit
• Pressure rating of 15 psi, within SAE range of 14-18 psi
• Cap depth and filler neck depth of 0.75 inches (19 mm)
• Filler neck inside diameter approximately 1.31 inches (33 mm)
• Filler neck outside diameter approximately 1.99 inches (51 mm)
• Shell diameter of 3.3 inches
• Compatible with closed coolant recovery systems
• OE performance rating for reliable fit and function

Detailed Product Description

The Gates OE Type Radiator Cap 31405 is part of the OE Type Radiator Cap product line, which focuses on delivering original equipment performance and fitment. This radiator cap is specifically designed as a threaded coolant bottle cap, providing a tight seal to maintain the correct pressure in closed coolant recovery systems. With a pressure rating of 15 psi, it helps prevent coolant loss and overheating by allowing the system to operate within the SAE pressure range of 14-18 psi. The cap features a 0.75-inch depth and a shell diameter of 3.3 inches, matching the dimensions required for proper sealing on compatible vehicles.

Compatible Vehicles and Applications

This radiator cap is compatible with a range of GM vehicles, including Buick Achieva, Cadillac Seville, Chevrolet Caprice, Corvette, Impala, Malibu, Oldsmobile Cutlass, Pontiac Grand Am, GTO, Sunfire, and Saturn SL series models. It is designed to fit vehicles equipped with closed coolant recovery systems, ensuring proper pressure regulation and coolant containment.

• Maintains proper cooling system pressure to prevent overheating
• Prevents coolant loss due to evaporation or leaks
• Ensures secure sealing of the coolant bottle neck
• Helps avoid radiator and engine damage caused by pressure fluctuations
• Supports efficient coolant recovery in closed systems

Installation Notes and Tips

When installing the Gates OE Type Radiator Cap 31405, ensure the filler neck is clean and free of debris to achieve a proper seal. Align the threaded cap carefully and tighten until secure, but avoid over-tightening which can damage the threads or cap. Verify that the cap pressure rating matches the vehicle manufacturer’s specifications to maintain system integrity.

Quality Assurance and Warranty

Gates OE Type Radiator Caps are manufactured to meet original equipment standards, providing reliable performance and durability. The 31405 cap carries an OE comparison rating, ensuring it meets the specifications required for proper fit and function. While specific warranty details are not provided, Gates products typically come with manufacturer-backed quality assurance to support long-term use in automotive cooling systems.