HomeEmission Control > SensorsBosch 18161 Oxygen Sensor - Upstream
Part #: 18161

Bosch 18161 Oxygen Sensor - Upstream

Bosch Validated Oxygen Sensor, Upstream
⚙️ 4 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$210.40Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Bosch Validated Oxygen Sensor, Upstream
🚗Fitment: Dodge, Dart
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Bosch Validated Oxygen Sensor 18161

The Bosch Validated Oxygen Sensor 18161 is designed specifically for Dodge Dart models, providing precise emission control and engine performance monitoring. This oxygen sensor features a heated wide-band design and a threaded mounting type for reliable installation and operation.

  • Compatible with Dodge Dart vehicles
  • Heated wide-band oxygen sensor for accurate air-fuel ratio readings
  • Threaded mounting with 18 mm thread diameter and 22 mm hex size
  • Includes 18.3-inch wiring harness with 5 wires and blade terminals
  • Standard replacement grade with metal housing and steel finish
  • Connector features a square shape with male gender and 8 terminals
  • Overall length of 21.9 inches for proper fitment

Detailed Product Features and Specifications

The Bosch Validated Oxygen Sensor 18161 is engineered as a specific fit part for Dodge Dart models, ensuring compatibility and optimal performance. It is a heated oxygen sensor with a wide-band sensing element, allowing for precise measurement of oxygen levels in the exhaust gases. The sensor uses a threaded mounting type with an 18 mm thread diameter and an 18 mm thread size, secured with a 22 mm hex for installation. The metal housing and steel finish provide durability under high-temperature conditions.

The wiring harness included measures 18.3 inches in length and contains 5 wires with blade-type terminals. The connector is square-shaped, male gender, and includes 8 terminals, matching the vehicle’s factory wiring harness. The overall length from sealing surface to the end of the connector is 20.7 inches, ensuring proper reach and fitment within the engine bay.

About the Bosch Validated Oxygen Sensor Product Line

The Bosch Validated Oxygen Sensor line is designed to meet or exceed OEM specifications for emission control sensors. This product line focuses on providing reliable, vehicle-specific oxygen sensors that maintain engine efficiency and emission standards. The 18161 sensor is part of this line, offering a standard replacement grade sensor with precise fitment and performance for Dodge Dart vehicles.

Common Applications and Issues Addressed

  • Replacement for faulty or failing oxygen sensors in Dodge Dart models
  • Helps resolve engine performance issues related to incorrect air-fuel mixture
  • Reduces emissions by providing accurate oxygen level data to the engine control unit
  • Prevents check engine light triggers caused by sensor malfunctions
  • Improves fuel efficiency by enabling proper combustion control

Installation Notes and Tips

  • Ensure vehicle compatibility with Dodge Dart before installation
  • Use a 22 mm oxygen sensor socket for removal and installation
  • Do not overtighten the sensor; follow manufacturer torque specifications
  • Inspect wiring harness and connector for damage before installation
  • Verify sensor connector matches the vehicle’s male 8-terminal square connector

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 18161 is manufactured with high-quality metal housing and tested to meet emission control standards. It includes a heated element for faster sensor response and durability. Bosch provides a standard replacement grade sensor designed for reliable operation. Warranty details should be confirmed with the point of purchase or Bosch directly.

This part fits 4 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2016DodgeDart2.4LL4UpstreamBosch Validated Oxygen Sensor
2015DodgeDart2.4LL4UpstreamBosch Validated Oxygen Sensor
2014DodgeDart2.4LL4UpstreamBosch Validated Oxygen Sensor
2013DodgeDart2.4LL4UpstreamBosch 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:

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