HomeEmission Control > SensorsWalker 250-23070 Oxygen Sensor - Upstream
Part #: 250-23070

Walker 250-23070 Oxygen Sensor - Upstream

Walker Products OE, Upstream
6 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$104.78Free 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
Walker Products OE, Upstream
Fitment: Volvo, 940
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 250-23070 Oxygen Sensor for Volvo 940

The Walker 250-23070 oxygen sensor is designed specifically for the Volvo 940, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.

  • Heated oxygen sensor for accurate emissions monitoring
  • Specific fit for Volvo 940 models
  • Threaded mounting with 18.0 mm thread diameter
  • 71.38 inches wiring harness length with 3 wires of 20 gauge
  • Radiused polygon male connector for reliable connection
  • Overall length of 74.92 inches for proper fitment

Detailed Product Description

The Walker 250-23070 oxygen sensor is engineered to meet the exact specifications of the Volvo 940. It features a heated sensor element that helps the sensor reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor includes a 71.38-inch wiring harness with three 20-gauge wires, providing a durable and stable electrical connection. The radiused polygon male connector ensures a secure fit with the vehicle’s wiring harness, minimizing the risk of disconnection or signal loss. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the designated exhaust port. With an overall length of 74.92 inches, this sensor fits precisely without excess slack or tension.

Walker Products OE Brand Line

This oxygen sensor is part of the Walker Products OE line, which focuses on delivering original equipment quality parts designed to meet or exceed factory specifications. The Walker Products OE line ensures compatibility and reliability for emission control components, making it a suitable choice for maintaining the performance and emissions standards of the Volvo 940.

Common Applications and Issues Addressed

  • Restores accurate oxygen sensing for proper air-fuel mixture control
  • Helps resolve rough idling and engine hesitation
  • Reduces increased emissions and failed emissions tests
  • Prevents poor fuel economy caused by faulty sensor readings
  • Eliminates check engine light codes related to oxygen sensor failure

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 type matches the vehicle harness before installation
  • Apply anti-seize compound on threads if recommended by manufacturer
  • Check for proper wiring harness routing to prevent damage or disconnection

Quality Assurance and Warranty

Walker oxygen sensors are manufactured to meet strict quality standards for durability and performance. The 250-23070 part number undergoes rigorous testing to ensure reliable operation in emission control systems. While specific warranty details may vary, Walker Products OE parts typically come with a limited warranty covering defects in materials and workmanship.

BrandWalker
Part Number250-23070
PositionWalker Products OE, Upstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length74.92
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity3
Wiring Harness Length71.38

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1995Volvo9402.3LL4GASUpstreamw/oRegina Engine Control System; B1S1; Sin sistema de control del motor regina; Upstream; Walker Products OE
1995Volvo9402.3LL4GASUpstreamUpstream Oxygen Sensor for vehicles without Regina Engine Control System; No se necesita sistema de control del motor regina; B1S1; Walker Products OE
1995Volvo9402.3LL4GASUpstreamUpstream Oxygen Sensor for vehicles without Regina Engine Control System, B1S1.; Walker Products OE
1994Volvo9402.3LL4GASUpstreamw/oRegina Engine Control System; B1S1; Sin sistema de control del motor regina; Upstream; Walker Products OE
1994Volvo9402.3LL4GASUpstreamUpstream Oxygen Sensor for vehicles without Regina Engine Control System; No se necesita sistema de control del motor regina; B1S1; Walker Products OE
1994Volvo9402.3LL4GASUpstreamUpstream Oxygen Sensor for vehicles without Regina Engine Control System, B1S1.; Walker Products OE

* 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.