Car Oxygen Sensor Lambda Sensor O2 Snesor Part Number LFH1-188G1 For Mazda

This Lambda Sensor (Oxygen Sensor) is a genuine Original Equipment (OE) component manufactured for Mazda vehicles. The OE number LFH1-188G1 (also written as LFH1-18-8G1) is the primary reference for this sensor family, widely used across the Mazda 6 (GG/GY) platform from 2002 to 2007, as well as other Mazda models sharing the same engine architecture.

The sensor monitors oxygen content in exhaust gases and relays this data to the Engine Control Unit (ECU), ensuring the optimal air-fuel mixture is maintained for efficient combustion and reduced emissions. It features a heated, 5-wire broadband design, allowing it to reach operating temperature quickly for precise air-fuel ratio measurement across the entire lambda range.

This sensor is a direct-fit component featuring a vehicle-specific electrical connector and pre-terminated wiring, eliminating the need for cutting or splicing during installation. It is positioned before the catalytic converter (upstream / pre-catalyst) and serves as the primary regulating probe for fuel trim adjustments.

• This is a 5-wire heated broadband oxygen sensor (also known as an Air-Fuel Ratio sensor) manufactured to Mazda's original equipment standards.
• The built-in heating element quickly brings the ceramic sensing tip up to operating temperature after a cold start, enabling the ECU to enter closed-loop fuel control sooner and reduce cold-start emissions.
• Unlike traditional narrow-band switching sensors, the broadband design provides continuous, linear measurement of the air-fuel ratio across a wide range, giving the ECU far more detailed information for precise fuel delivery control.
• As an upstream (pre-catalyst) regulating sensor, it is installed before the catalytic converter and serves as the primary regulating probe that directly influences the ECU's fuel trim adjustments.
• The sensor features a rectangular 5-pin connector and a cable length of approximately 550 mm.
• All sensors are manufactured to meet or exceed original equipment quality standards.
• The threads are factory pre-greased with anti-seize compound for quick and easy replacement.

The following OE numbers are directly interchangeable with LFH1-188G1. These numbers are frequently grouped together across multiple aftermarket catalogues as direct equivalents.

• The OE numbers LFH1188G1B and LFH1188G1D are the most frequently listed Mazda references across aftermarket catalogues for this sensor family.
• LFH1188G1A, LFH1188G1C, and L3R6188G1A are closely related variants used on the same Mazda 6 GG/GY applications.
• The Intermotor 65168 aftermarket sensor lists LFH1188G1B and LFH1188G1D as OEM references, with 5-pin connector, 550 mm cable length, rectangular connector, and broadband oxygen sensor function.
• The Lucas LEB5540 aftermarket sensor lists LFH1188G1B and LFH1188G1D as OEM references, with 5-pin connector, 550 mm cable length, rectangular connector, and broadband lambda sensor function.
• The Lemark LLB1066 aftermarket sensor lists LFH1188G1B and LFH1188G1D as OEM references, with 5-pin connector, 550 mm cable length, and rectangular connector.
• The Blue Print ADM57041 aftermarket sensor lists LFH1188G1D, LFH1188G1B, and LFH1188G1C as Mazda OEM references.
• The VEMO V32-76-0014 aftermarket sensor lists LFH1188G1D, LFH1188G1, LFH1188G1C, L3R6188G1A, LFH1188G1A, A5LFH1188G1, and LFH1188G1B as Mazda OEM references.
• The FAE 75088 aftermarket sensor lists LFH1-18-8G1D and LFH1188G1C as Mazda OEM references.
• Always physically compare your old sensor's connector shape (rectangular), pin count (5), cable length (550 mm), and fitting position (upstream / before catalytic converter) before purchasing.

This Lambda Sensor is an original equipment component used across a range of Mazda vehicles. Based on extensive cross-reference data, the sensor is installed in the upstream (pre-catalyst / before catalytic converter) position.

• This is an upstream (pre-catalyst / before catalytic converter) oxygen sensor. It is installed before the catalytic converter and serves as the primary regulating probe for air-fuel mixture control.
• Primary applications include Mazda 6 (GG/GY) from 2002 to 2007 with 1.8L, 2.0L, and 2.3L petrol engines, including hatchback and station wagon variants.
• Mazda Capella (GW8W) is also compatible with this sensor family.
• How to verify: Locate your vehicle's catalytic converter. The upstream sensor is typically installed in the exhaust manifold or in the pipe immediately before the catalytic converter. If your faulty sensor is located before the converter, this part is suitable. If located after the converter, a different part number is required.
• Not compatible with diesel engines — diesel applications use different sensors with different calibration parameters.
• The vehicle fitment information above is a guide only. Always confirm compatibility using your vehicle's VIN or by physically inspecting your old sensor's position, connector shape, and cable length before ordering.