Dorman 310-221 Evaporative Emissions System Leak Detection Pump

Dorman 310-221 Leak Detection Pump

Dorman 310-221 is an evaporative emissions system leak detection pump built for specific applications where the original pump has failed or no longer seals correctly. It is designed to match the fit and function of the OE unit for Volkswagen Passat models, with a plastic housing, black finish, integrated filter, and a male 3-blade connector.

For Volkswagen Passat evaporative emissions repair, this pump supports accurate leak detection in the EVAP system and helps restore proper system operation. The Dorman 310-221 is a direct-fit replacement for specified Passat applications and is built for dependable service in the emission control system.

Key Features

• Specific-fit evaporative emissions system leak detection pump
• Designed to match original fit and function on listed applications
• Plastic construction with black housing
• Includes filter and 2-port configuration
• Male 3-blade connector/terminal configuration
• Measures 3.8 in. diameter and 4.5 in. length
• Inlet and outlet outside diameter: 0.7 in.

Detailed Description

This emission control component is engineered for Volkswagen Passat EVAP system service where a failed leak detection pump can trigger emissions-related faults. Dorman 310-221 is built as a specific-fit replacement for 1998-2005 Volkswagen Passat models, including 1998-2000 Volkswagen Passat L4 1.6L (1595cc) applications. If you are searching for a Volkswagen Passat leak detection pump, EVAP leak detection pump, or Dorman 310-221 replacement, this part is designed for the listed vehicle coverage and connector style.

This part cross-references Standard Ignition LDP16 for the same application.

What It Helps Address

• EVAP system leak detection pump failure
• Check engine light caused by evaporative emissions faults
• Incorrect leak detection readings in the emissions system
• Damaged or worn OE pump housing and ports
• Connector mismatch on specified Volkswagen Passat applications

Installation Notes and Tips

Verify the vehicle year, engine, and connector configuration before installation. This pump uses a specific-fit design, so confirm the male 3-blade terminal layout and port dimensions against the original unit. Inspect the EVAP hoses, seals, and related emission control components during replacement to help prevent repeat faults.

Quality Assurance

Dorman designs this leak detection pump to match OE fit and function on the specified applications and to provide reliable performance and durability in everyday service.