Denso
Air / Fuel Ratio Sensor - OE Style

Denso 234-5748 Air / Fuel Ratio Sensor - Upstream Left

Brand Denso 234-5748
Position Upstream Left
Wiring Harness Length 37.0079
Sensor Type Wide-band
Universal Or Specific Fit Specific
Wire Quantity 5
Grade Type Standard replacement
Connector Gender Male
Product line Air / Fuel Ratio Sensor - OE Style
Fits Ford and Lincoln · 11 vehicles

OE-style replacement. Built to strict OE standards for exact replacement and a first-time fit.

Wide-band design. Provides precise air/fuel ratio monitoring for listed applications.

Specific-fit application. Uses a 5-wire layout with a male connector and 37.0079-inch harness.

Cross-references L1MZ9F472A for the same application. See all 1.

$161.77Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing β€” free returns if it doesn't
Step 2 — Quantity
Order total $161.77
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

OE-Style Air/Fuel Ratio Sensor

This Denso air/fuel ratio sensor is a specific-fit, wide-band replacement built to OE standards for accurate signal control and a first-time fit. It is engineered for applications that require a male connector and a 5-wire configuration, with a 37.0079-inch harness length.

Fits 2020-2024 Lincoln Aviator, upstream left. Fits 2021-2022 Ford Explorer, upstream left. Fits 2020-2022 Ford Police Interceptor Utility, upstream left. Fits 2020 Ford Explorer, upstream left, from 05/06/2019.

  • Wide-band sensor design for precise air/fuel ratio monitoring
  • Specific-fit replacement for direct application matching
  • Standard replacement grade for OE-style service work
  • Male connector with 5-wire layout for the listed applications

What This Sensor Helps Address

  • Incorrect air/fuel ratio readings
  • Check engine light concerns related to sensor performance
  • Driveability issues caused by inaccurate exhaust feedback
  • Hard starting or rough running tied to mixture control faults
  • Failed emissions testing caused by sensor degradation

Installation Notes

Verify connector style, wire count, and harness length before installation. This sensor is listed for upstream left placement only, so match the vehicle application and note details exactly as shown in the fitment data. For Ford Explorer and Lincoln Aviator applications, confirm the model year and the 05/06/2019 note where applicable.

Quality Assurance

Denso manufactures and tests these sensors to OE standards for exact replacement and consistent fit. Part number 234-5748 cross-references L1MZ9F472A for the same application.

This part fits 11 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2024LincolnAviatorUpstream LeftAir / Fuel Ratio Sensor - OE Style
2023LincolnAviatorUpstream LeftAir / Fuel Ratio Sensor - OE Style
2022FordExplorerUpstream LeftAir / Fuel Ratio Sensor - OE Style
2022FordPolice Interceptor UtilityUpstream LeftAir / Fuel Ratio Sensor - OE Style
2022LincolnAviatorUpstream LeftAir / Fuel Ratio Sensor - OE Style
2021FordExplorerUpstream LeftAir / Fuel Ratio Sensor - OE Style
2021FordPolice Interceptor UtilityUpstream LeftAir / Fuel Ratio Sensor - OE Style
2021LincolnAviatorUpstream LeftAir / Fuel Ratio Sensor - OE Style
2020FordExplorerUpstream LeftFrom 05/06/2019; Air / Fuel Ratio Sensor - OE Style
2020FordPolice Interceptor UtilityUpstream LeftAir / Fuel Ratio Sensor - OE Style
2020LincolnAviatorUpstream LeftAir / Fuel Ratio Sensor - OE Style
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
L1MZ9F472A