HomeDenso 234-4186 Oxygen Sensor - Downstream or Upstream
Part #: 234-4186

Denso 234-4186 Oxygen Sensor - Downstream or Upstream

OE Style, Downstream
9 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
OE Style, Downstream
Fitment: Porsche, Boxster
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Overview of Denso OE Style Oxygen Sensor 234-4186

The Denso OE Style Oxygen Sensor 234-4186 is designed specifically for Porsche Boxster models, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a 9.84-inch wiring harness for a secure and accurate fit.

  • Heated oxygen sensor for faster response times
  • Specific fit for Porsche Boxster vehicles
  • Threaded mounting type with 0.708-inch thread diameter
  • 9.84-inch wiring harness length with 4 wires
  • Female connector for direct compatibility

Detailed Product Description

The Denso 234-4186 oxygen sensor is engineered to meet the exact specifications of Porsche Boxster models, providing reliable emission control and efficient fuel management. This heated sensor type accelerates the sensor’s warm-up time, allowing the engine control unit to adjust the air-fuel mixture more quickly. The sensor’s 0.708-inch threaded mounting ensures a secure installation, while the 9.84-inch wiring harness length offers sufficient reach for proper connection. Featuring a female connector and four wires, this sensor integrates seamlessly with the vehicle’s existing wiring harness.

This oxygen sensor is part of Denso’s OE Style product line, which focuses on delivering original equipment quality and fitment. The OE Style line is designed to replicate the performance and durability of factory-installed parts, making it a suitable replacement for maintaining the integrity of your Porsche Boxster’s emission system.

Common Applications and Issues Addressed

  • Restores accurate oxygen sensing for proper fuel mixture adjustment
  • Helps resolve rough idling caused by faulty oxygen sensors
  • Reduces increased emissions and failed emissions tests
  • Improves fuel efficiency by ensuring correct air-fuel ratio
  • Eliminates check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

  • Ensure the vehicle is cool before removing the old sensor to avoid burns
  • Use appropriate tools to avoid damaging the threaded mounting
  • Verify connector gender and wire count for compatibility before installation
  • Apply anti-seize compound on threads if recommended by manufacturer
  • Follow vehicle-specific torque specifications during installation

Quality Assurance and Warranty

Denso’s OE Style oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. While specific warranty details for part number 234-4186 may vary, Denso typically offers coverage against defects in materials and workmanship. Refer to the product documentation or manufacturer for exact warranty terms.

BrandDenso
Part Number234-4186
PositionOE Style, Downstream
Connector GenderFemale
Mounting TypeThreaded
Sensor TypeHeated
Thread Diameter0.708
Universal Or Specific FitSpecific
Wire Quantity4
Wiring Harness Length9.84

This part fits 9 vehicles. Search below:

YearMakeModelPositionNotes
2002PorscheBoxsterDownstreamLoc. Secondary Catalyst; OE Style
2001PorscheBoxsterDownstreamLoc. Secondary Catalyst; OE Style
2000PorscheBoxsterDownstreamLoc. Secondary Catalyst; OE Style
1999PorscheBoxsterUpstreamOE Style
1999PorscheBoxsterDownstreamOE Style
1998PorscheBoxsterUpstreamOE Style
1998PorscheBoxsterDownstreamOE Style
1997PorscheBoxsterUpstreamOE Style
1997PorscheBoxsterDownstreamOE Style

* 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:

213-3878

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