HomeEmission Control > SensorsDenso 234-4016 Oxygen Sensor - Upstream
Part #: 234-4016

Denso 234-4016 Oxygen Sensor - Upstream

OE Style, Upstream
11 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$46.77Free 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, Upstream
Fitment: Ford and Mercury, Contour, Cougar, and Mystique
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of the Denso OE Style Oxygen Sensor 234-4016

The Denso OE Style Oxygen Sensor 234-4016 is designed specifically for select Ford and Mercury vehicles, including the Contour, Cougar, and Mystique models. This heated oxygen sensor features a threaded mounting type and a 25.20-inch wiring harness, ensuring precise fitment and reliable performance.

  • Heated oxygen sensor for accurate emissions monitoring
  • Specific fit for Ford Contour, Mercury Cougar, and Mystique
  • Threaded mounting with 0.708-inch thread diameter
  • 25.20-inch wiring harness length with 4 wires
  • Male connector for secure electrical connection

Detailed Features and Specifications

The Denso 234-4016 oxygen sensor is a heated sensor designed to provide quick response times and accurate readings of oxygen levels in the exhaust system. It includes a 25.20-inch wiring harness with four wires, allowing for proper electrical connections and sensor heating. The sensor’s threaded mounting type with a 0.708-inch thread diameter ensures a secure and precise installation. The male connector design facilitates compatibility with the vehicle’s existing wiring harness. This sensor is a specific fit for Ford Contour, Mercury Cougar, and Mystique models, ensuring proper operation within these vehicles’ emission control systems.

About the Denso OE Style Product Line

The Denso OE Style product line focuses on providing replacement parts that meet original equipment specifications. This oxygen sensor from the OE Style line is engineered to match the fit, form, and function of the original sensor installed in your Ford or Mercury vehicle. Using parts from the OE Style line helps maintain factory-level performance and emissions compliance.

Common Applications and Issues Addressed

  • Restores accurate oxygen sensing for optimal fuel mixture control
  • Resolves check engine light codes related to oxygen sensor failure
  • Improves emissions system performance and reduces exhaust pollutants
  • Prevents rough idling and poor engine performance caused by faulty sensors
  • Supports proper catalytic converter operation by providing accurate data

Installation Notes and Tips

When installing the Denso 234-4016 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the wiring harness length and connector type match your vehicle’s specifications. Tighten the sensor to the manufacturer’s torque specifications to prevent leaks or damage. It is recommended to inspect the wiring and connectors for corrosion or damage before installation.

Quality Assurance and Warranty

Denso oxygen sensors are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and performance. The OE Style 234-4016 sensor is designed to provide reliable operation within the emission control system of compatible Ford and Mercury vehicles. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandDenso
Part Number234-4016
PositionOE Style, Upstream
Connector GenderMale
Mounting TypeThreaded
Sensor TypeHeated
Thread Diameter0.708
Universal Or Specific FitSpecific
Wire Quantity4
Wiring Harness Length25.20

This part fits 11 vehicles. Search below:

YearMakeModelPositionNotes
1999FordContourUpstreamOE Style
1999MercuryCougarUpstreamOE Style
1999MercuryMystiqueUpstreamOE Style
1998FordContourUpstreamOE Style
1998MercuryMystiqueUpstreamOE Style
1997FordContourUpstreamOE Style
1997MercuryMystiqueUpstreamOE Style
1996FordContourUpstreamOE Style
1996MercuryMystiqueUpstreamOE Style
1995FordContourUpstreamOE Style
1995MercuryMystiqueUpstreamOE 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:

213-1329

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