NTK
Direct Fit Oxygen Sensor

NTK 24509 Oxygen Sensor - Downstream Left or Downstream Right

Brand NTK 24509
Position Downstream Right and Downstream Left
Wiring Harness Length 17.7500
Sensor Type Non heated
Universal Or Specific Fit Specific
Wire Quantity 2
Thread Diameter 18.000
Mounting Type Threaded
Product line Direct Fit Oxygen Sensor
Fits Lexus · 4 vehicles

Direct fit design. Application-specific replacement for streamlined sensor selection.

Non-heated sensor. 2-wire construction with a threaded mounting design.

OE-focused engineering. Extensively tested for quality and reliability during manufacturing.

Cross-references BBB Industries 13471, Delphi ES10948 and DENSO Auto Parts 234-2011 for the same application. See all 8.

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Order total $78.64
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Free returns within 60 days if it doesn't fit when fitment is verified.

Direct Fit Oxygen Sensor

NTK 24509 is a direct fit oxygen sensor built for specific applications and engineered to match original equipment form and function. It uses a threaded mounting design with a 17.75-inch harness and a non-heated, 2-wire configuration.

Compatible with 1993-1994 Lexus LS400 downstream oxygen sensor applications, this NTK sensor is built for precise replacement where OE-style fitment matters. NTK 24509 is part of the Direct Fit Oxygen Sensor line, which focuses on application-specific coverage and streamlined replacement selection.

  • Specific-fit oxygen sensor for direct replacement applications
  • Non-heated design with 2-wire construction
  • Threaded mounting type for OE-style installation
  • 17.75-inch wiring harness length
  • Fits 1993-1994 Lexus LS400, downstream right and downstream left

Detailed Application Notes

Fits 1993-1994 Lexus LS400, downstream right. Fits 1993-1994 Lexus LS400, downstream left. This part cross-references Delphi ES10948 and DENSO Auto Parts 234-2011 for the same application. The 18 mm thread diameter and specific-fit design support a direct replacement for the original sensor location, while the NTK 24509 part number helps confirm the correct match during ordering and service.

Common Replacement Uses

  • Replacing a worn or slow-responding oxygen sensor
  • Addressing fault codes related to downstream oxygen sensor performance
  • Restoring proper exhaust feedback signal output
  • Replacing a damaged threaded sensor or harness connection

Installation Notes

Verify the downstream position, connector style, thread diameter, and harness length before installation. Use the vehicle application data to confirm the correct side and placement, and compare the removed sensor to NTK 24509 before final fitment.

Quality Assurance

NTK is part of the NGK family of products and is a major original equipment oxygen sensor supplier. Each sensor is extensively tested during manufacturing to support OE-level quality and reliability.

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1994LexusLS4004.0LV8Downstream RightOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
1994LexusLS4004.0LV8Downstream LeftDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
1993LexusLS4004.0LV8Downstream RightOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
1993LexusLS4004.0LV8Downstream LeftDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
BBB Industries — 13471Delphi — ES10948DENSO Auto Parts — 234-2011213-28718946550050ES10557OS2434SG1597