Standard Ignition MAS0377 Mass Air Flow Sensor

Name: Standard Ignition MAS0377 Mass Air Flow Sensor
Brand: Dorman
SKU: FBHK-MAS0377
Price: 84.29 USD
Availability: InStock

118 vehicles fit this part

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Reliable Mass Air Flow Sensor for Lexus and Toyota Vehicles

The Standard Ignition MAS0377 Mass Air Flow Sensor is designed to provide accurate airflow measurement for optimal engine performance. Compatible with a range of Lexus and Toyota models, this sensor helps maintain efficient fuel delivery and emissions control.

Direct replacement for OEM mass air flow sensors
Compatible with Lexus 4Runner, GX460, GX470, Land Cruiser, LX470, LX570
Fits Toyota Prius, Prius AWD-e, Prius Prime, Sequoia, Tacoma, and Tundra models
Ensures precise air intake measurement for improved engine management
Durable construction for long-lasting performance

Product Details and Compatibility

The Standard Ignition MAS0377 is engineered to meet the specifications required by Lexus and Toyota vehicles listed in its fitment. This mass air flow sensor accurately measures the volume and density of air entering the engine, which is critical for the engine control unit to adjust fuel injection and ignition timing. Proper airflow measurement supports emission control systems and helps maintain fuel efficiency. The MAS0377 sensor is a direct fit replacement, making it suitable for models such as the Lexus GX460 and Toyota Tacoma, ensuring seamless integration without modification.

Common Applications and Problem Resolution

Restores proper air-fuel mixture for smoother engine operation
Resolves rough idling and engine hesitation issues
Helps correct poor fuel economy caused by faulty airflow readings
Addresses check engine light triggers related to mass air flow sensor faults
Supports emission control compliance by providing accurate sensor data

Installation Notes and Tips

Installation of the MAS0377 mass air flow sensor requires basic mechanical skills and standard hand tools. Before installation, disconnect the vehicle battery to prevent electrical shorts. Remove the old sensor carefully to avoid damaging the air intake system. Ensure the new sensor is securely connected and properly seated to prevent air leaks. After installation, it is recommended to clear any diagnostic trouble codes and perform a system reset if necessary to allow the engine control unit to recalibrate.

Quality Assurance and Warranty Information

Standard Ignition manufactures the MAS0377 mass air flow sensor to meet or exceed OEM standards. Each unit undergoes rigorous testing to ensure reliability and accuracy. This sensor is backed by a limited warranty, providing coverage against defects in materials and workmanship for a specified period. Refer to the product documentation for detailed warranty terms.

Brand	Dorman
Part Number	42004
Color	Silver
Material	Steel
Package Contents	2 Spark Plug Non-Foulers
Spark Plug Seat Style	Tapered
Spark Plug Thread Size (mm)	14

This part fits 118 vehicles. Search below:

Year	Make	Model	Liters	Cylinders	Position	Notes
2023	Toyota	Tacoma	2.7L	L4	N/A
2022	Toyota	Prius AWD-e	1.8L	L4	N/A
2022	Toyota	Prius Prime	1.8L	L4	N/A
2022	Toyota	Sequoia			N/A
2022	Toyota	Tacoma	2.7L	L4	N/A
2021	Lexus	GX460			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2021	Lexus	LX570			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2021	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2021	Toyota	Prius			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2021	Toyota	Prius AWD-e	1.8L	L4	N/A
2021	Toyota	Prius Prime	1.8L	L4	N/A
2021	Toyota	Sequoia			N/A
2021	Toyota	Tacoma	2.7L	L4	N/A
2021	Toyota	Tundra	5.7L	V8	N/A
2020	Lexus	GX460			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2020	Lexus	LX570			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2020	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2020	Toyota	Prius			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2020	Toyota	Prius AWD-e	1.8L	L4	N/A
2020	Toyota	Prius Prime	1.8L	L4	N/A
2020	Toyota	Sequoia			N/A
2020	Toyota	Tacoma	2.7L	L4	N/A
2020	Toyota	Tundra	5.7L	V8	N/A
2019	Lexus	GX460			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2019	Lexus	LX570			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2019	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2019	Toyota	Prius			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2019	Toyota	Prius AWD-e	1.8L	L4	N/A
2019	Toyota	Prius Prime	1.8L	L4	N/A
2019	Toyota	Sequoia			N/A
2019	Toyota	Tacoma	2.7L	L4	N/A
2019	Toyota	Tundra	4.6L	V8	N/A
2018	Lexus	GX460			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2018	Lexus	LX570			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2018	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2018	Toyota	Prius			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2018	Toyota	Prius Prime	1.8L	L4	N/A
2018	Toyota	Sequoia			N/A
2018	Toyota	Tacoma	2.7L	L4	N/A
2018	Toyota	Tundra	4.6L	V8	N/A
2017	Lexus	GX460			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2017	Lexus	LX570			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2017	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2017	Toyota	Prius			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2017	Toyota	Prius Prime	1.8L	L4	N/A
2017	Toyota	Sequoia			N/A
2017	Toyota	Tacoma	2.7L	L4	N/A
2017	Toyota	Tundra	4.6L	V8	N/A
2016	Lexus	GX460			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2016	Lexus	LX570			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2016	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2016	Toyota	Sequoia			N/A
2016	Toyota	Tacoma	2.7L	L4	N/A
2016	Toyota	Tundra	4.6L	V8	N/A
2015	Lexus	GX460			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2015	Lexus	LX570			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2015	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2015	Toyota	Sequoia			N/A
2015	Toyota	Tacoma	2.7L	L4	N/A
2014	Lexus	GX460			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2014	Lexus	LX570			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2014	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2014	Toyota	Sequoia			N/A
2014	Toyota	Tacoma	2.7L	L4	N/A
2013	Lexus	GX460			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2013	Lexus	LX570			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2013	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2013	Toyota	Sequoia			N/A
2013	Toyota	Tacoma	2.7L	L4	N/A
2012	Lexus	GX460			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2012	Toyota	Sequoia			N/A
2012	Toyota	Tacoma	2.7L	L4	N/A
2011	Lexus	GX460			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2011	Lexus	LX570			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2011	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2011	Toyota	Sequoia			N/A
2011	Toyota	Tacoma	2.7L	L4	N/A
2010	Lexus	GX460			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2010	Lexus	LX570			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2010	Toyota	4Runner			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2010	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2010	Toyota	Sequoia			N/A
2010	Toyota	Tacoma	2.7L	L4	N/A
2010	Toyota	Tundra			N/A
2009	Lexus	GX470			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2009	Lexus	LX570			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2009	Toyota	4Runner			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2009	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2009	Toyota	Sequoia			N/A
2009	Toyota	Tacoma	2.7L	L4	N/A
2009	Toyota	Tundra			N/A
2008	Lexus	GX470			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2008	Lexus	LX570			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2008	Toyota	4Runner			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2008	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2008	Toyota	Sequoia			N/A
2008	Toyota	Tacoma	2.7L	L4	N/A
2008	Toyota	Tundra			N/A
2007	Lexus	GX470			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2007	Lexus	LX470			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2007	Toyota	4Runner			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2007	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2007	Toyota	Sequoia			N/A
2007	Toyota	Tacoma	2.7L	L4	N/A
2007	Toyota	Tundra			N/A
2006	Lexus	GX470			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2006	Lexus	LX470			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2006	Toyota	4Runner			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2006	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2006	Toyota	Sequoia			N/A
2006	Toyota	Tacoma	2.7L	L4	N/A
2006	Toyota	Tundra	4.7L	V8	N/A
2005	Lexus	LX470			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2005	Toyota	4Runner			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2005	Toyota	Land Cruiser			N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2005	Toyota	Sequoia			N/A
2005	Toyota	Tacoma	2.7L	L4	N/A
2005	Toyota	Tundra	4.7L	V8	N/A	Prior to purchase, ensure compatibility with vehicle's alternator for proper fit.

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

This part directly replaces or is cross-referenced with the following part numbers:

420043

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.