Denso 234-4965 Oxygen Sensor - Downstream Left
OE Quality 60-Day Returns
Denso
 OE Style

Denso 234-4965 Oxygen Sensor - Downstream Left

Brand Denso 234-4965
Position Downstream Left
Sensor Type Heated
Universal Or Specific Fit Specific
Wire Quantity 4
Wiring Harness Length 17.32
Product line OE Style
Fits Ford · 4 vehicles

OE style. Precision-built for exact replacement and a first-time fit.

Heated sensor. Helps deliver faster operation and consistent readings.

Aluminum oxide trap layer. Protects the ceramic element for longer service life.

Cross-references Ford CK4Z9G444B, NTK 22543 and Walker Products 250-241186 for the same application. See all 4.

$68.34Free shipping
In stock · usually ships same day before 1pm CST
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Denso OE Style Oxygen Sensor for Transit

Denso 234-4965 is a heated oxygen sensor built to OE-style specifications for direct replacement on select Ford Transit vans. It is engineered for exact fitment and stable exhaust feedback, helping maintain proper air-fuel control on the downstream left position.

Key Features

  • Heated oxygen sensor for faster operating response
  • Specific-fit design for direct replacement installation
  • 17.32-inch wiring harness length
  • 4-wire configuration
  • OE Style product line for factory-like fit and function

Product Details

This Denso oxygen sensor is manufactured and tested to OE standards, with precision construction for a first-time fit. The OE Style line focuses on direct replacement accuracy, and Denso’s aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination for more consistent engine performance and fuel economy. Part number 234-4965 is a direct-fit emission control sensor for 2015 Ford Transit-150, Transit-250, Transit-350, and Transit-350 HD models in the downstream left position. This part cross-references Ford CK4Z9G444B for the same application.

What It Helps Address

  • Check engine light related to oxygen sensor performance
  • Incorrect exhaust oxygen readings
  • Rough fuel control from a failing downstream sensor
  • Reduced fuel efficiency caused by inaccurate sensor feedback
  • Emission system faults on 2015 Ford Transit-150, Transit-250, Transit-350, and Transit-350 HD

Installation Notes and Tips

Verify the downstream left location before installation and compare the connector, wire count, and harness length to the original sensor. Use proper exhaust sensor service practices to avoid damaging the sensing element during removal and installation. Confirm vehicle application by year, model, and position before ordering Denso 234-4965.

Quality Assurance

Denso manufactures this OE Style oxygen sensor to strict factory-level standards and tests each component for replacement accuracy and fit consistency. The design is intended to deliver the correct part and fit for the listed Ford Transit applications.

Related reading

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2015FordTransit-150Downstream LeftOE Style
2015FordTransit-250Downstream LeftOE Style
2015FordTransit-350Downstream LeftOE Style
2015FordTransit-350 HDDownstream LeftOE Style
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Ford — CK4Z9G444BNTK — 22543Walker Products — 250-241186Walker Products — 350-341078