42121 Wells Map/Boost Sensor 5S2589

Wells MAP Sensor 5S2589

Restore optimal engine performance and fuel efficiency with the Wells MAP Sensor 5S2589 (SKU 42-121). This premium OEM-quality manifold absolute pressure sensor is specifically engineered for Jeep Grand Cherokee WJ and WG models equipped with the 4.0L ERH engine, delivering precise intake manifold pressure readings for optimal fuel delivery, ignition timing, and engine performance.

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Key Features & Benefits

• Wells Quality - OEM-grade component built to Jeep's exact specifications
• Direct Replacement - Perfect fit for Jeep Grand Cherokee WJ/WG 4.0L ERH engines
• Precise Pressure Monitoring - Accurately measures intake manifold pressure for optimal engine management
• Enhanced Performance - Ensures correct air-fuel mixture and ignition timing for maximum efficiency
• Durable Construction - Built to withstand extreme temperatures and pressure variations
• Easy Installation - Direct plug-and-play replacement

Vehicle Compatibility

This MAP sensor is designed for:

• Jeep Grand Cherokee WJ with 4.0L ERH engine
• Jeep Grand Cherokee WG with 4.0L ERH engine
• Other compatible Jeep 4.0L applications
  
  

CLICK HERE TO CHECK IF THIS FITS YOUR VEHICLE.

OEM Part Number Cross-Reference

This Wells MAP sensor replaces the following Jeep OEM part numbers:

• 56044545AA
• 56044545AB

Wells Part Number

5S2589

Cross Reference Number

MAP-121 MAP121

Common Symptoms of Faulty MAP Sensors

• Poor fuel economy
• Engine misfires or rough idling
• Loss of power during acceleration
• Check engine light illuminated (P0105, P0106, P0107, P0108 codes)
• Black smoke from exhaust
• Engine hesitation or stumbling
• Difficulty starting the engine
• Failed emissions test

Why Choose LM15 Motorsport?

We supply genuine Wells engine management components with fast shipping across Australia. Every part is carefully inspected to ensure you receive the exact component your Jeep needs for reliable performance and longevity.

Need help with fitment or installation? Contact our expert team for advice specific to your vehicle.