Dorman 54019 Engine Coolant Reservoir Cap

Overview of Dorman Engine Coolant Reservoir Cap 54019

The Dorman 54019 engine coolant reservoir cap is designed for reliable pressure management in cooling systems of select Audi and Volkswagen models. This twist-type, threaded-on cap ensures a secure fit and maintains system integrity under specified pressure conditions.

• Constructed from durable plastic material
• Diameter measures 3.16 inches for precise fitment
• Maximum pressure rating of 22 psi to maintain cooling system pressure
• Threaded-on attachment type for secure installation
• Twist-type cap without pressure release lever or venting
• Pressurized design to support engine cooling efficiency
• Color coded blue for easy identification

Detailed Product Description

The Dorman 54019 engine coolant reservoir cap is engineered to meet the specifications required by various Audi and Volkswagen vehicles, including models such as the A3, A4, A5, A6, Q5, Golf, Jetta, Passat, and TT series. Its plastic construction offers resistance to heat and corrosion, while the 3.16-inch diameter ensures compatibility with the designated coolant reservoirs. The cap’s maximum pressure rating of 22 psi helps maintain optimal pressure within the cooling system, preventing coolant loss and overheating. The threaded-on, twist-type design provides a secure and straightforward installation without the need for additional tools or components. This cap does not include a pressure release lever or venting, aligning with the original equipment specifications for the compatible vehicles.

Compatible Vehicles and Applications

This engine coolant reservoir cap is compatible with a wide range of Audi and Volkswagen models, including but not limited to:

• Audi A1, A3, A4, A5, A6, A7, Q5, RS4, RS7, S3, S4, S5, S6, S7, SQ5, TT, and their Quattro variants
• Volkswagen Beetle, Bora, Caddy, CC, Crafter, Eos, Golf, GTI, Jetta, Passat, Touareg, and Amarok

Using the correct coolant reservoir cap like the Dorman 54019 ensures proper pressure regulation and system performance for these vehicles.

Common Issues Addressed by This Coolant Reservoir Cap

• Prevents coolant leaks caused by worn or damaged caps
• Maintains proper pressure to avoid engine overheating
• Ensures secure sealing to prevent contamination of the cooling system
• Replaces missing or cracked caps to restore system integrity
• Helps avoid coolant loss due to improper venting or pressure release

Installation Notes and Tips

• Ensure the reservoir neck is clean and free of debris before installation
• Align the cap threads carefully and twist on until firmly seated
• Do not overtighten to avoid damaging the cap or reservoir
• Check for leaks after installation by running the engine to operating temperature
• Replace the cap with part number 54019 to maintain OEM specifications

Quality Assurance and Warranty

Dorman manufactures the 54019 engine coolant reservoir cap to meet or exceed OEM standards for fit, form, and function. The plastic material and pressure rating are tested to ensure durability and performance under normal operating conditions. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Using this cap helps maintain the reliability of the cooling system in compatible Audi and Volkswagen vehicles.