Dorman 994-158 Vapor Canister Purge Valve

Dorman 994-158 Vapor Canister Purge Valve

Dorman 994-158 is a direct replacement vapor canister purge valve for the evaporative emissions system. It is engineered for a precise fit and plug-and-play installation, making it a practical choice for Ram 1500, Ram ProMaster, Jeep Cherokee, and Chrysler 200 applications that use a valve and hose assembly.

Key Features

• Direct replacement purge valve for the evaporative emissions system
• Designed for a factory-style fit and straightforward installation
• Plastic housing with an oval female connector
• Two-port vacuum design with 10.5 mm port outside diameters
• Connector hose inside diameter: 7.5 mm
• Vacuum connector diameter: 18.2 mm
• Mount hole diameter: 12.8 mm with one mounting hole
• Length: 318 mm
• Terminal type: blade; terminal quantity: 2

Detailed Description

This Dorman vapor canister purge valve is built as an OE-style replacement for the original purge valve used in the evaporative emissions system. It helps maintain proper vapor routing from the charcoal canister to the engine intake, supporting emissions compliance and normal engine operation. Part number 994-158 is listed for 2013-2023 Ram 1500, 2019-2023 Ram 1500 Classic, 2014-2022 Jeep Cherokee, 2014-2021 Ram ProMaster 1500, 2014-2021 Ram ProMaster 2500, 2014-2021 Ram ProMaster 3500, and 2015-2017 Chrysler 200, with notes to match the hose against the original on the Chrysler application.

This part cross-references Standard Ignition (e.g., CP814, CP825) for the same application.

What It Helps Address

• Check engine light related to evaporative emissions faults
• Rough idle caused by purge valve leakage or sticking
• Fuel vapor control issues in the EVAP system
• Hard starting after refueling
• Emissions test failures tied to purge valve performance

Installation Notes and Tips

Verify the connector style, hose diameter, and mounting dimensions against the original part before installation. This valve uses a single oval connector, two vacuum ports, and a valve-and-hose assembly layout, so matching the original routing is important. For Chrysler 200 applications, compare the hose assembly to the original unit before ordering or installing. Confirm the vehicle’s EVAP plumbing and electrical connector orientation before final fitment.

Quality Assurance

Dorman designs this purge valve as a direct OE replacement for the original equipment part and states that it fulfills government emissions requirements. The part number 994-158 is built for factory-style fitment and dependable service in the evaporative control system.