HomeEmission Control > SensorsDenso 234-4099 Oxygen Sensor - Downstream, Downstream Front or Upstream
Part #: 234-4099

Denso 234-4099 Oxygen Sensor - Downstream, Downstream Front or Upstream

OE Style, Downstream
⚙️ 41 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$42.62Free 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
📦OE Style, Downstream
🚗Fitment: Honda and Acura, Civic, Odyssey, CL, NSX, Accord, EL, Civic del Sol, and Integra
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Oxygen Sensor for Acura and Honda Vehicles

The Denso OE Style 234-4099 oxygen sensor is designed specifically for select Acura and Honda models, including the Accord, Civic, and NSX. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

  • Heated sensor type for faster response times
  • Specific fit for Acura and Honda models such as Civic, Accord, and Odyssey
  • 16.93-inch wiring harness length for proper installation
  • Threaded mounting type with 0.708-inch thread diameter
  • Four-wire design with male connector for secure connection

About the Denso OE Style Product Line

The OE Style line from Denso offers oxygen sensors engineered to meet original equipment specifications. The 234-4099 sensor maintains factory-level fit, form, and function, ensuring compatibility and reliable performance for Acura and Honda vehicles. This line focuses on delivering components that integrate seamlessly with the vehicle’s emission control system.

Detailed Product Description

The Denso 234-4099 oxygen sensor features a heated sensor element that accelerates the sensor’s readiness after engine start, improving emission control efficiency. Its specific fitment to Acura and Honda models like the Civic del Sol, CL, and Integra guarantees proper installation without modification. The sensor includes a 16.93-inch wiring harness and a male connector with four wires, facilitating a secure and stable electrical connection. The threaded mounting type with a 0.708-inch diameter ensures a tight seal in the exhaust system, preventing leaks and maintaining sensor accuracy.

Common Issues Addressed by This Oxygen Sensor

  • Incorrect air-fuel mixture readings causing poor fuel economy
  • Check engine light triggered by faulty oxygen sensor signals
  • Increased emissions due to sensor malfunction
  • Engine performance problems such as rough idling or hesitation
  • Failed emissions tests related to sensor degradation

Installation Notes and Tips

When installing the Denso 234-4099 oxygen sensor, ensure the vehicle is compatible with this specific fit sensor. Use proper tools to avoid damaging the threaded mounting. The 16.93-inch wiring harness length allows for straightforward routing without stretching or excess slack. Confirm the male connector securely mates with the vehicle’s wiring harness to prevent electrical issues. It is recommended to replace the sensor when the engine is cool to avoid burns and to apply anti-seize compound on the threads if reusing the sensor.

Quality Assurance and Warranty

Denso oxygen sensors, including the OE Style 234-4099, are manufactured to meet strict quality standards and original equipment specifications. This ensures reliable performance and durability in emission control applications. Warranty coverage details should be confirmed with the supplier or manufacturer, as they may vary by region and distributor.

BrandDenso
Part Number234-4099
PositionOE Style, Downstream
Connector GenderMale
Mounting TypeThreaded
Sensor TypeHeated
Thread Diameter0.708
Universal Or Specific FitSpecific
Wire Quantity4
Wiring Harness Length16.93

This part fits 41 vehicles. Search below:

YearMakeModelTransmissionPositionNotes
2000HondaCivicUpstreamOE Style
2000HondaCivicDownstreamOE Style
2000HondaCivicAutomatic CVTUpstreamOE Style
2000HondaOdysseyUpstreamOE Style
1999AcuraCLUpstreamOE Style
1999AcuraNSXDownstream FrontOE Style
1999HondaAccordUpstreamOE Style
1999HondaCivicUpstreamOE Style
1999HondaCivicDownstreamOE Style
1999HondaCivicAutomatic CVTUpstreamOE Style
1999HondaOdysseyUpstreamOE Style
1998AcuraCLUpstreamOE Style
1998AcuraELUpstreamOE Style
1998AcuraNSXDownstream FrontOE Style
1998HondaAccordUpstreamOE Style
1998HondaCivicUpstreamOE Style
1998HondaCivicDownstreamOE Style
1998HondaCivicAutomatic CVTUpstreamOE Style
1997AcuraCLUpstreamOE Style
1997AcuraELUpstreamOE Style
1997AcuraNSXDownstream FrontOE Style
1997HondaCivicUpstreamOE Style
1997HondaCivicAutomatic CVTUpstreamOE Style
1997HondaCivic del SolUpstreamOE Style
1996AcuraNSXDownstream FrontOE Style
1996HondaCivicUpstreamOE Style
1996HondaCivicAutomatic CVTUpstreamOE Style
1996HondaCivic del SolUpstreamOE Style
1995AcuraNSXDownstream FrontOE Style
1995HondaCivicUpstreamOE Style
1995HondaCivicUpstreamCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1995HondaCivic del SolUpstreamOE Style
1994HondaCivicUpstreamOE Style
1994HondaCivicUpstreamCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1994HondaCivic del SolUpstreamOE Style
1993AcuraIntegraUpstreamOE Style
1993HondaCivicUpstreamOE Style
1993HondaCivicUpstreamCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1993HondaCivic del SolUpstreamOE Style
1992AcuraIntegraUpstreamOE Style
1992HondaCivicUpstreamOE 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:

213-1383213-1387213-1393

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