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Part #: 18181

Bosch 18181 Oxygen Sensor - Downstream or Upstream

Bosch Validated Oxygen Sensor, Upstream and Downstream
⚙️ 17 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Bosch Validated Oxygen Sensor, Upstream and Downstream
🚗Fitment: Mitsubishi, Lancer, Outlander, Outlander Sport, and RVR
🔄Easy Returns — Return within 60 days for a full refund
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Reliable Oxygen Sensor for Mitsubishi Lancer and Outlander Models

The Bosch Validated Oxygen Sensor 18181 is designed specifically for select Mitsubishi vehicles, including the Lancer, Outlander, Outlander Sport, and RVR. This oxygen sensor ensures accurate air-fuel mixture readings to help maintain optimal engine performance and emissions control.

Key Features of Bosch Oxygen Sensor 18181

  • Specific fit for Mitsubishi Lancer, Outlander, Outlander Sport, and RVR models
  • Heated wide band oxygen sensor for precise emissions monitoring
  • Threaded mounting type with 18 mm thread diameter and 22 mm hex size
  • 5-wire design with 6 blade terminals and a male rectangular connector
  • Durable metal housing finished in steel for long-lasting performance
  • Wiring harness included with a length of 38.2 inches and overall length of 41.7 inches

Detailed Description of Bosch Validated Oxygen Sensor

The Bosch Validated Oxygen Sensor 18181 is a standard replacement part engineered to meet the exact specifications of Mitsubishi vehicles such as the Lancer and Outlander series. Featuring a heated wide band sensor type, it provides accurate and responsive oxygen level readings to the engine control unit. The sensor’s threaded mounting type with an 18 mm diameter and 22 mm hex size allows for secure installation. Its 5-wire configuration with 6 blade terminals and a male rectangular connector ensures reliable electrical connections. The sensor is constructed with a metal housing finished in steel, offering durability under high-temperature conditions. The included wiring harness measures 38.2 inches, with an overall length of 41.7 inches, facilitating proper fitment and ease of installation.

Common Applications and Issues Addressed

  • Helps maintain proper air-fuel ratio for efficient combustion
  • Reduces harmful emissions by providing accurate oxygen readings
  • Prevents engine performance issues related to faulty sensors
  • Resolves check engine light triggers caused by oxygen sensor faults
  • Supports optimal fuel economy in Mitsubishi Lancer and Outlander models

Installation Notes and Tips

When installing the Bosch oxygen sensor 18181, ensure the threaded mounting hole is clean and free of debris. Use a 22 mm wrench or socket for proper tightening without over-torquing. The sensor’s wiring harness and connector are designed for specific fitment, so verify compatibility with your Mitsubishi Lancer, Outlander, Outlander Sport, or RVR before installation. Avoid damaging the wiring during installation to maintain sensor functionality.

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 18181 is manufactured to meet OEM standards for fit, form, and function. Bosch’s product line is known for rigorous validation processes to ensure reliable performance and durability. This oxygen sensor is a standard replacement part designed to restore proper emissions control and engine operation. Warranty details are provided by Bosch and should be confirmed at the time of purchase.

BrandBosch
Part Number18181
PositionBosch Validated Oxygen Sensor, Upstream and Downstream
Wiring Harness Length38.2
Terminal TypeBlade
Universal Or Specific FitSpecific
Wire Quantity5
Grade TypeStandard replacement
Connector ShapeRectangle
Terminal Quantity6
Connector GenderMale
Terminal GenderMale
Overall Length41.7
Mounting TypeThreaded
Automotive Color / FinishSteel
Automotive Item Weight (lbs)0.330693 lb
Heated (Oxygen Sensor)Yes
Hex Size (Oxygen Sensor)22 mm
Housing MaterialMetal
Length (Sealing Surface To End Of Connector)40.6 in
Mounting Bracket IncludedNo
Oxygen Sensor TypeWide band
Sensor TypeNarrow-band
Thread Diameter (Oxygen Sensor)18 mm
Thread Size18
Wiring Harness IncludedYes

This part fits 17 vehicles. Search below:

YearMakeModelDrive TypeLitersCylindersPositionNotes
2018MitsubishiOutlander Sport4WD2.0LL4UpstreamBosch Validated Oxygen Sensor
2018MitsubishiOutlander Sport2.4LL4UpstreamBosch Validated Oxygen Sensor
2017MitsubishiOutlander Sport2.4LL4UpstreamBosch Validated Oxygen Sensor
2017MitsubishiOutlander Sport2.0LL4UpstreamBosch Validated Oxygen Sensor
2016MitsubishiLancer2.4LL4UpstreamOE Quality Oxygen Sensor
2016MitsubishiOutlander Sport2.4LL4UpstreamBosch Validated Oxygen Sensor
2016MitsubishiOutlander Sport2.0LL4UpstreamBosch Validated Oxygen Sensor
2015MitsubishiLancer2.4LL4UpstreamOE Quality Oxygen Sensor
2015MitsubishiOutlander Sport2.4LL4UpstreamBosch Validated Oxygen Sensor
2013MitsubishiLancer2.4LL4UpstreamOE Quality Oxygen Sensor
2013MitsubishiOutlander2.4LL4UpstreamOE Quality Oxygen Sensor
2012MitsubishiOutlander2.4LL4DownstreamBosch Validated Oxygen Sensor
2011MitsubishiLancer2.0LL4Upstreamwithout California Emission System; Bosch Validated Oxygen Sensor
2011MitsubishiLancer2.4LL4Upstreamwithout California Emission System; Bosch Validated Oxygen Sensor
2011MitsubishiOutlander2.4LL4UpstreamBosch Validated Oxygen Sensor
2011MitsubishiOutlander Sport2.0LL4Upstreamwithout California Emission System; Bosch Validated Oxygen Sensor
2011MitsubishiRVR2.0LL4UpstreamBosch Validated Oxygen Sensor

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1588A228

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.