NTK HJ0012 HVAC Heater Core Temperature Sensor

BMW HVAC Heater Core Sensor

NTK HJ0012 is an HVAC heater core temperature sensor built for BMW applications that require accurate cabin climate feedback. It uses a rectangular female connector with two male pins and no mounting hardware included.

Compatible with BMW 3 Series, 1 Series, X2, X3, i3, M3, M5, and 7 Series applications, this sensor supports precise temperature monitoring in the heater core circuit. The NTK HJ0012 is part of NTK’s technical sensor line, backed by OE-focused engineering and broad aftermarket coverage.

Key Features

• Rectangular connector design for a secure electrical interface
• Two-pin configuration for heater core temperature sensing
• Female connector with male terminals
• No mounting hardware included
• NTK technical sensor line with OE application technology

Detailed Description

The NTK HJ0012 HVAC heater core temperature sensor is engineered for BMW climate control systems that rely on accurate temperature input from the heater core circuit. It is a fitment-based replacement for a wide range of BMW models, including the BMW 328i, BMW 335i, and BMW X2, making it a practical choice for restoring proper HVAC sensor function across multiple platforms. Part number HJ0012 is also referenced in OE-style cross applications, including Standard Ignition AX506.

NTK positions this sensor within its broader technical sensor program, drawing on OE experience and testing that includes thermal shock, vibration, and OBD verification. The result is a sensor manufactured to meet or exceed OE specifications for import and domestic coverage.

What It Is Used For

• Incorrect heater core temperature readings
• HVAC control issues caused by faulty sensor input
• Climate system performance problems in BMW applications
• Diagnostic trouble codes related to temperature sensing
• Restoring accurate cabin heating regulation

Installation Notes and Tips

Verify connector shape, terminal style, and vehicle fitment before installation. This sensor uses a rectangular female connector with two male pins, so the electrical connection should match the original unit. Confirm the application against the vehicle’s HVAC configuration, especially on BMW models with special notes such as the 2009-2010 M5 without Extended Rear Cabin Air Conditioning.

Quality Assurance

NTK is the only OE supplier with a full line of technical sensors in the aftermarket for import and domestic vehicles. HJ0012 is manufactured and tested to meet or exceed OE specifications, with validation that includes thermal shock, vibration, and OBD verification.