Denso 234-4514 Oxygen Sensor - Upstream
OE Quality 60-Day Returns
Denso
 OE Style

Denso 234-4514 Oxygen Sensor - Upstream

Brand Denso 234-4514
Position Upstream
Sensor Type Heated
Universal Or Specific Fit Specific
Wire Quantity 4
Wiring Harness Length 32.87
Product line OE Style
Fits Toyota · 6 vehicles

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

Heated sensor. Helps deliver accurate readings for dependable engine performance.

Aluminum oxide trap layer. Protects the ceramic element from silicone and lead poisoning.

Cross-references ACDelco 213-1598, BorgWarner OS1561 and Bosch 13904 for the same application. See all 8.

$100.65Free shipping
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Denso OE Style Oxygen Sensor for Toyota Supra

The Denso 234-4514 oxygen sensor is an OE-style, specific-fit replacement for 1993-1998 Toyota Supra upstream applications. Built to match factory requirements, it uses a heated 4-wire design and a 32.87-inch wiring harness for direct replacement service on the Toyota Supra.

Key Features

  • OE Style replacement for factory-style fit and function
  • Specific fit application for 1993-1998 Toyota Supra, upstream
  • Heated oxygen sensor design for faster operating response
  • 4-wire configuration for the listed application
  • 32.87-inch wiring harness length
  • Built and tested to OE standards for replacement accuracy

Product Details

Denso 234-4514 is engineered as a direct replacement oxygen sensor for the upstream position on the 1993-1998 Toyota Supra. Denso’s OE Style line focuses on exact replacement dimensions and first-time fit, which helps simplify service on emissions-related repairs. The sensor also uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management and consistent fuel control.

This part cross-references Toyota 8946519605 and Bosch 13904 for the same application.

Common Issues This Sensor May Address

  • Check engine light related to oxygen sensor performance
  • Rough idle or inconsistent air-fuel readings
  • Reduced fuel economy caused by a worn upstream sensor
  • Slow sensor response during closed-loop operation
  • Emissions test failures tied to sensor degradation

Installation Notes and Tips

Verify the upstream sensor location before installation on the Toyota Supra. Confirm connector style, wire count, and harness length against the original part to ensure proper routing. Because this is a specific-fit sensor, it should be matched to the listed application rather than used as a universal replacement.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for replacement accuracy and consistent performance. The OE-style design, exact-fit construction, and contamination-resistant trap layer reflect Denso’s focus on durable emissions control components for the 1993-1998 Toyota Supra.

Related reading

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1998ToyotaSupraUpstreamOE Style
1997ToyotaSupraUpstreamOE Style
1996ToyotaSupraUpstreamOE Style
1995ToyotaSupraUpstreamOE Style
1994ToyotaSupraUpstreamOE Style
1993ToyotaSupraUpstreamOE Style
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 213-1598BorgWarner — OS1561Bosch — 13904NTK — 24575Standard Ignition — SG807Toyota — 8946519605Walker Products — 250-24288Walker Products — 350-34554