Wastegate Solenoid 5140305AA Replacement for Dodge/Cummins by AUTOMAJOR | Turbo wastegate control solenoid. Fits Dodge Ram 5.9L 6.7L Cummins diesel HE351 turbo. Replaces 5140305AA

The AUTOMAJOR Turbocharger Wastegate Solenoid Valve is a direct OEM replacement for Dodge Ram 2500 and 3500 trucks equipped with the 5.9L Cummins Diesel engine and Holset HE351 variable geometry turbocharger. This solenoid controls boost pressure by regulating the wastegate actuator — a critical component for engine performance, fuel economy, and turbocharger longevity. This solenoid replaces Dodge/Mopar OEM 5140305AA (05140305AA), 5140887AB (05140887AB), and 5143256AA (05143256AA). Cross-references with aftermarket part numbers 2N1311 and WGS1. If your truck uses any of these part numbers, this solenoid is the correct replacement. The wastegate solenoid is mounted on or near the turbocharger and controls the wastegate actuator using vacuum or pressure signals from the ECM. The wastegate itself is a valve that diverts exhaust gas around the turbocharger turbine when boost pressure reaches the target level — limiting maximum boost to a safe range. When the solenoid fails, the wastegate either stays closed (causing overboost and potential engine damage) or stays open (causing underboost and major loss of power). Common symptoms of a failed wastegate solenoid include: check engine light with codes P0045, P0046, P0047, P0048, P0049, P0234 (overboost), P0299 (underboost), P003A, P0046, severe loss of power and acceleration, black smoke from exhaust under load (overboost), reduced fuel economy, audible turbo whistle changes (constant high pitch indicates stuck open wastegate), engine hesitation under load, limp mode activation, and complete loss of boost. Replacing the wastegate solenoid is a 30-60 minute DIY job. Tools needed: 8mm socket, ratchet, extension, vacuum hose if needed, and shop towels. Procedure: locate the solenoid mounted near the turbocharger or on the firewall, disconnect the electrical connector, disconnect the vacuum/pressure hoses (note their orientation for reinstallation), remove the mounting bolts, install the new AUTOMAJOR solenoid in the same orientation, reconnect the hoses to their original ports, reconnect the electrical connector, start the engine and verify proper boost operation, clear any stored diagnostic codes. This solenoid fits Dodge Ram 2500 5.9L Cummins Diesel (2004-2007), Ram 3500 5.9L Cummins Diesel (2004-2007), and Ram 5500 chassis cab applications. Compatible with all 5.9L 24-valve Common Rail Cummins ISB engines (model years 2004-2007 with HE351 Holset variable geometry turbocharger). NOT compatible with 6.7L Cummins (2007.5+) or earlier 5.9L 12-valve / 24-valve VP44 engines (1998.5-2002) — those use different solenoids. Always confirm your truck's OEM part number before ordering. Backed by AUTOMAJOR — trusted OEM-quality replacement parts for Dodge Ram Cummins owners and diesel mechanics.

• Direct replacement for Dodge/Mopar OEM 5140305AA (05140305AA), 5140887AB (05140887AB), and 5143256AA (05143256AA). Cross-references with aftermarket part numbers 2N1311 and WGS1. Compatible with Dodge Ram 2500/3500 5.9L Cummins Diesel trucks (2004-2007) equipped with the Holset HE351 variable geometry turbocharger.
• The wastegate solenoid controls the wastegate actuator using vacuum or pressure signals from the ECM. The wastegate diverts exhaust gas around the turbocharger turbine when boost pressure reaches the target level — limiting maximum boost to a safe range. When the solenoid fails, the wastegate either stays closed (overboost, potential engine damage) or stays open (underboost, major loss of power).
• Symptoms of a failed wastegate solenoid: check engine codes P0045, P0046, P0047, P0048, P0049, P0234 (overboost), P0299 (underboost), P003A, severe loss of power and acceleration, black smoke from exhaust under load (overboost), reduced fuel economy, audible turbo whistle changes (constant high pitch indicates stuck open wastegate), engine hesitation, limp mode activation, complete loss of boost.
• 30-60 minute DIY repair with basic tools (8mm socket, ratchet, extension). Locate solenoid mounted near the turbocharger or on the firewall, disconnect electrical connector, disconnect vacuum/pressure hoses (note orientation), remove mounting bolts, install new solenoid, reconnect hoses to original ports, reconnect electrical connector, start engine and verify proper boost operation, clear stored codes.
• Compatible with Dodge Ram 2500 5.9L Cummins Diesel (2004-2007), Ram 3500 5.9L Cummins Diesel (2004-2007), Ram 5500 chassis cab. All 5.9L 24-valve Common Rail Cummins ISB engines with HE351 Holset variable geometry turbocharger. NOT for 6.7L Cummins (2007.5+) or earlier 5.9L 12-valve / 24-valve VP44 engines (1998.5-2002) — those use different solenoids. Always confirm your truck's OEM part number before ordering.