Dorman 310-205 Evaporative Emissions System Leak Detection Pump

Dorman 310-205 Leak Detection Pump

Dorman 310-205 is an evaporative emissions system leak detection pump built to match the fit and function of the original pump on specified vehicles. It is a specific-fit replacement for select Dodge Ram 1500, Ram 2500, Ram 3500, and 1998 Jeep Grand Cherokee applications, with a compact black plastic housing and OE-style electrical connection.

Key Features

• Specific-fit evaporative emissions system leak detection pump
• Black plastic construction for direct replacement use
• Male 3-blade connector/terminal configuration
• Two-port design with 0.7 in. inlet and outlet outside diameters
• Approximate dimensions: 3.8 in. diameter and 4.5 in. length
• Fits select 1998-2002 Dodge Ram 2500, 1998-2002 Dodge Ram 3500, 1998-2001 Dodge Ram 1500, and 1998 Jeep Grand Cherokee applications

Detailed Description

This Dorman evaporative emissions system leak detection pump is engineered as a direct replacement for the original unit on listed applications. It is designed to restore proper EVAP system operation by matching the original fit, function, and connector style, making it a practical choice for emissions-related repairs on Dodge Ram trucks and the Jeep Grand Cherokee. Part number 310-205 is also referenced by 4B1597 and Standard Ignition LDP31 for the same application.

What It Helps Address

• EVAP leak detection pump failure codes
• Check engine lights related to evaporative emissions faults
• Improper leak detection during EVAP system testing
• Hard-to-diagnose emissions system drivability concerns tied to pump malfunction
• Replacement needs after pump housing or internal component wear

Installation Notes and Tips

Verify connector style, port layout, and physical dimensions before installation. This pump uses a male 3-blade terminal configuration and a specific-fit design, so it should be matched to the original part on the vehicle. Confirm the application against the vehicle’s year, make, and model before service. For fitment, this part is listed for 1998-2002 Dodge Ram 2500, 1998-2002 Dodge Ram 3500, 1998-2001 Dodge Ram 1500, and 1998 Jeep Grand Cherokee. Part number 310-205 should be compared to the removed unit and vehicle service information during diagnosis.

Quality Assurance

Dorman designs this leak detection pump to match original fit and function on specified applications and to deliver reliable performance and durability in EVAP service. The part is built for direct replacement use on the listed vehicles and is supported by Dorman’s aftermarket replacement engineering approach.