Denso 234-4303 Oxygen Sensor - Downstream or Upstream
OE Quality 60-Day Returns
Denso
 OE Style

Denso 234-4303 Oxygen Sensor - Downstream or Upstream

Brand Denso 234-4303
Position Downstream
Connector Gender Male
Mounting Type Threaded
Sensor Type Heated
Thread Diameter 0.708
Universal Or Specific Fit Specific
Wire Quantity 4
Wiring Harness Length 11.73
Product line OE Style
Fits Suzuki · 2 vehicles

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

Heated sensor. Helps support faster operation and consistent performance.

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

Cross-references Bosch 18036, NTK 24815 and Suzuki 1821357L00 for the same application. See all 6.

$154.54Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $154.54
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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 Grand Vitara

Denso 234-4303 is a heated, specific-fit oxygen sensor built for direct replacement on select Suzuki applications. It is engineered for the 2009-2010 Suzuki Grand Vitara, upstream, with the correct connector style and threaded mounting for a precise OE-style fit.

  • Heated oxygen sensor for faster sensor operation
  • Specific fit for direct replacement on select vehicles
  • 4-wire design with male connector
  • Threaded mounting type with 0.708 in. thread diameter
  • Wiring harness length: 11.73 in.
  • OE Style Denso replacement for accurate fit and function

OE Style Construction

Denso’s OE Style line is built to match original equipment dimensions and connection points for straightforward replacement. The sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management and long service life. This Denso 234-4303 oxygen sensor is a direct-fit choice for drivers servicing a 2009-2010 Suzuki Grand Vitara upstream sensor location.

This part cross-references Bosch 18036 and NTK 24815 for the same application.

Vehicle Fitment

  • Fits 2009-2010 Suzuki Grand Vitara, upstream.

Common Issues This Sensor May Address

  • Check engine light related to oxygen sensor performance
  • Rough idle or inconsistent air-fuel readings
  • Reduced fuel economy from a failing upstream sensor
  • Slow sensor response affecting engine management
  • Emissions test failure caused by a worn sensor

Installation Notes and Tips

Verify the upstream sensor location before installation and compare the connector, wire count, and thread size to the original part. Because this is a specific-fit sensor, it should align with the factory mounting point on the Suzuki Grand Vitara without modification. Confirm the harness length and routing path before final tightening.

Quality Assurance

Denso manufactures and tests its oxygen sensors to OE standards for replacement accuracy and consistent performance. The OE Style design focuses on first-time fit and dependable operation in the intended application.

Related reading

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2010SuzukiGrand VitaraUpstreamOE Style
2009SuzukiGrand VitaraUpstreamOE Style
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 18036NTK — 24815Suzuki — 1821357L00Suzuki — 1821379K00Walker Products — 250-24861Walker Products — 350-34158