NTK 24777 Air / Fuel Ratio Sensor - Upstream or Upstream Rear

Brand	NTK 24777
Position	Upstream Rear and Upstream
11589	Metric
Heated	Yes
Wiring Harness Length	24.50
Wiring Harness Length	625.00
Sensor Type	Wide-band
Connector Color	Grey
Terminal Type	Blade
Thread Length	7.00
Universal Or Specific Fit	Specific
Wire Quantity	4
Grade Type	Standard replacement
Connector Shape	Square
Terminal Quantity	4
Connector Gender	Female
Terminal Gender	Male
Thread Size	M18 - 1.5
Mounting Bracket Included	No
Heated	Yes
Hex Size	7/8" (22mm)
Technology	4-wire a/f sensor
Product line	Direct Fit 4-Wire A/F Sensor
Fits	Lexus, Scion, and Toyota · 122 vehicles

Direct fit replacement. Standard replacement air/fuel ratio sensor with specific fit.

Wide-band sensor. Provides a linear signal for precise air-fuel adjustments.

Heated 4-wire design. Helps the engine control system maintain optimal combustion.

$119.74Free shipping

In stock · usually ships same day before 1pm CST

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NTK Direct Fit A/F Sensor 24777

NTK part number 24777 is a direct fit 4-wire air/fuel ratio sensor built for precise fuel control and OE-style replacement on select Toyota and Lexus applications. It uses a wide-band sensor design with a heated element and a specific-fit configuration for straightforward replacement on the listed upstream positions.

Key Features

Direct fit 4-wire A/F sensor for OE-equivalent replacement
Wide-band sensor type for linear air/fuel feedback to the ECU
Heated design for faster operating temperature and stable signal output
Specific-fit application with square female connector and blade terminals
M18 x 1.5 thread size with 7/8 in. (22 mm) hex size
24.50 in. wiring harness length for listed vehicle applications
Standard replacement grade from NTK, a major OEM oxygen sensor supplier

Product Details

NTK 24777 is engineered as a direct replacement air/fuel ratio sensor for vehicles that rely on wide-band feedback to maintain the correct mixture under changing driving conditions. Unlike a conventional switching oxygen sensor, this sensor provides a linear signal so the engine control unit can make continuous adjustments for combustion efficiency and emissions control. It is a specific-fit, heated 4-wire sensor with a grey square connector, female connector housing, male blade terminals, and metric M18 x 1.5 threads.

This part number 24777 is listed for upstream and upstream rear positions on select Toyota and Lexus models, including Toyota Camry, Toyota Tacoma, Toyota Avalon, Toyota Highlander, Toyota Sienna, Toyota RAV4, Toyota Venza, Lexus ES350, Lexus ES300h, Lexus RX350, Lexus RX450h, Lexus RX350L, Lexus RX450hL, Lexus NX300h, and Scion tC. For shoppers searching for a Toyota Camry upstream rear air/fuel ratio sensor or a Lexus RX350 upstream rear A/F sensor, NTK 24777 matches the OE-equivalent design called out in the fitment data.

NTK’s sensor expertise and ceramics manufacturing background support consistent sensing performance and OE application coverage. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Sensor May Address

Check engine light related to air/fuel ratio or oxygen sensor performance
Rough idle caused by inaccurate mixture feedback
Reduced fuel economy from incorrect fuel trim correction
Emissions test failure tied to sensor response or signal quality
Driveability concerns from delayed or unstable upstream sensor readings

Installation Notes

Verify the connector shape, wire count, thread size, and sensor position before installation. This NTK 24777 sensor is a specific-fit replacement for the listed upstream and upstream rear locations, so matching the exact vehicle, engine configuration, and sensor position is important. Inspect the harness routing and connector condition during replacement, and confirm the sensor seats properly in the exhaust bung with the correct 7/8 in. hex tool.

Quality Assurance

NTK is a long-standing OEM sensor supplier with broad OE application coverage. Part number 24777 is built as a standard replacement air/fuel ratio sensor for the listed Toyota, Lexus, and Scion applications.

This part fits 122 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Liters	Cylinders	Fuel Type	Position	Notes
2024	Lexus	ES350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2024	Toyota	Camry	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2023	Lexus	ES350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2023	Toyota	Camry	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2023	Toyota	Tacoma	2.7L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2022	Lexus	ES350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2022	Toyota	Avalon	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2022	Toyota	Camry	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2022	Toyota	Tacoma	2.7L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2021	Lexus	ES350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2021	Lexus	NX300h	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2021	Toyota	Avalon	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2021	Toyota	Camry	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2021	Toyota	Tacoma	2.7L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2020	Lexus	ES350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2020	Lexus	NX300h	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2020	Lexus	RX350	3.5L	V6	GAS	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2020	Lexus	RX350L	3.5L	V6	GAS	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2020	Lexus	RX450h	3.5L	V6	FULL HYBRID EV-GAS (FHEV)	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2020	Lexus	RX450hL	3.5L	V6	FULL HYBRID EV-GAS (FHEV)	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2020	Toyota	Avalon	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2020	Toyota	Camry	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2020	Toyota	Sienna	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2020	Toyota	Tacoma	2.7L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2019	Lexus	ES350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2019	Lexus	NX300h	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2019	Lexus	RX350	3.5L	V6	GAS	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2019	Lexus	RX350L	3.5L	V6	GAS	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2019	Lexus	RX450h	3.5L	V6	FULL HYBRID EV-GAS (FHEV)	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2019	Lexus	RX450hL	3.5L	V6	FULL HYBRID EV-GAS (FHEV)	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2019	Toyota	Avalon	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2019	Toyota	Camry	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2019	Toyota	Highlander	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2019	Toyota	Sienna	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2019	Toyota	Tacoma	2.7L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2018	Lexus	ES300h	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2018	Lexus	ES350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2018	Lexus	NX300h	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2018	Lexus	RX350	3.5L	V6	GAS	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2018	Lexus	RX350L	3.5L	V6	GAS	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2018	Lexus	RX450h	3.5L	V6	FULL HYBRID EV-GAS (FHEV)	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2018	Lexus	RX450hL	3.5L	V6	FULL HYBRID EV-GAS (FHEV)	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2018	Toyota	Avalon	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2018	Toyota	Camry	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2018	Toyota	Highlander	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2018	Toyota	RAV4	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2018	Toyota	Sienna	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2018	Toyota	Tacoma	2.7L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2017	Lexus	ES300h	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2017	Lexus	ES350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2017	Lexus	NX300h	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2017	Lexus	RX350	3.5L	V6	GAS	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2017	Lexus	RX450h	3.5L	V6	FULL HYBRID EV-GAS (FHEV)	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2017	Toyota	Avalon	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2017	Toyota	Camry	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2017	Toyota	Highlander	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2017	Toyota	RAV4	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2017	Toyota	Sienna	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2017	Toyota	Tacoma	2.7L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2016	Lexus	ES300h	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2016	Lexus	ES350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2016	Lexus	NX300h	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2016	Lexus	RX350	3.5L	V6	GAS	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2016	Lexus	RX450h	3.5L	V6	FULL HYBRID EV-GAS (FHEV)	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2016	Scion	tC	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2016	Toyota	Avalon	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2016	Toyota	Camry	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2016	Toyota	Highlander	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2016	Toyota	RAV4	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2016	Toyota	Sienna	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2016	Toyota	Tacoma	2.7L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2016	Toyota	Venza	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2015	Lexus	ES300h	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2015	Lexus	ES350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2015	Lexus	NX300h	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2015	Lexus	RX350	3.5L	V6	GAS	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2015	Lexus	RX450h	3.5L	V6	FULL HYBRID EV-GAS (FHEV)	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2015	Scion	tC	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2015	Toyota	Avalon	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2015	Toyota	Camry	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2015	Toyota	Highlander	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2015	Toyota	RAV4	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2015	Toyota	Sienna	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2015	Toyota	Tacoma	2.7L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2015	Toyota	Venza	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2014	Lexus	ES300h	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2014	Lexus	ES350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2014	Lexus	RX350	3.5L	V6	GAS	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2014	Lexus	RX450h	3.5L	V6	FULL HYBRID EV-GAS (FHEV)	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2014	Scion	tC	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2014	Toyota	Avalon	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2014	Toyota	Camry	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2014	Toyota	Highlander	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2014	Toyota	RAV4	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2014	Toyota	Sienna	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2014	Toyota	Tacoma	2.7L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2014	Toyota	Venza	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2013	Lexus	ES300h	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2013	Lexus	ES350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2013	Lexus	RX350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2013	Lexus	RX450h	3.5L	V6	FULL HYBRID EV-GAS (FHEV)	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2013	Scion	tC	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2013	Toyota	Avalon	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2013	Toyota	Camry	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2013	Toyota	Highlander	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2013	Toyota	RAV4	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2013	Toyota	Sienna	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2013	Toyota	Tacoma	2.7L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2013	Toyota	Venza	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2012	Lexus	ES350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2012	Lexus	RX350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2012	Lexus	RX450h	3.5L	V6	FULL HYBRID EV-GAS (FHEV)	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2012	Scion	tC	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2012	Toyota	Avalon	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2012	Toyota	Camry	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2012	Toyota	Highlander	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2012	Toyota	Sienna	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2012	Toyota	Venza	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2011	Lexus	RX350	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2011	Lexus	RX450h	3.5L	V6	FULL HYBRID EV-GAS (FHEV)	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2011	Scion	tC	2.5L	L4	—	Upstream	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
2011	Toyota	Highlander	3.5L	V6	—	Upstream Rear	OE Equivalent Design; Direct Fit 4-Wire A/F Sensor
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