Arnott RH-4437 Headlight Level Sensor - Front, Rear or Rear Right

Headlight Level Sensor for BMW and Rolls-Royce

Arnott RH-4437 is a new headlight level sensor used in air-suspension-equipped BMW and Rolls-Royce applications to monitor chassis height and send position data to the ECU. That signal helps the system adjust air pressure in the struts to maintain proper ride height and headlamp leveling.

• New aftermarket ride height sensor for headlight leveling and suspension height feedback
• Oval connector with 1 female connector, 6 male terminals, and pin-style terminals
• Standard grade replacement with no mounting hardware included
• Connector color varies by application
• Direct-fit coverage for BMW X5, X3, 5 Series xDrive, 7 Series, Z4, Mini Cooper, and Rolls-Royce Phantom applications

Detailed Product Information

This Arnott RH-4437 sensor measures the distance between the road and the vehicle chassis so the ECU can command the air suspension compressor as needed. It is used on BMW and Rolls-Royce models where accurate ride height input is required for suspension control and headlight leveling. The RH-4437 is a new replacement part and cross-references BMW OE numbers such as 37140141445 and 37146784697 for the same application.

Compatible With 2014-2017 Rolls-Royce Phantom, front; 2011-2012 Rolls-Royce Phantom, front; 2008 Rolls-Royce Phantom, front; 2005 Rolls-Royce Phantom, front; 2013 Rolls-Royce Phantom, rear; 2009-2010 Rolls-Royce Phantom, rear; 2006-2007 Rolls-Royce Phantom, rear; 2004 Rolls-Royce Phantom, rear; 2003-2016 BMW Z4, rear; 2009-2010 BMW 528i xDrive, front; 2009-2010 BMW 535i xDrive, front; 2010 BMW X3, rear; 2006-2008 BMW X3, rear; 2004 BMW X3, rear; 2009 BMW X3, front; 2005 BMW X3, front; 2008 BMW 528xi, front; 2008 BMW 535xi, front; 2006-2008 BMW 750i, rear; 2006-2008 BMW 750Li, rear; 2003-2008 BMW 760Li, rear; 2002-2008 Mini Cooper, front; 2006-2007 BMW 525xi, front; 2006-2007 BMW 530xi, front; 2001-2006 BMW 325Ci, rear right; 2001-2006 BMW 330Ci, rear right; 2004-2006 BMW 760i, rear; 2001-2006 BMW M3, rear right; 2000-2006 BMW X5, rear; 2001-2005 BMW 320i, rear right; 2001-2005 BMW 325i, rear right; 2001-2005 BMW 325xi, rear right; 2001-2005 BMW 330i, rear right; 2001-2005 BMW 330xi, rear right; 2002-2005 BMW 745i, rear; 2002-2005 BMW 745Li, rear; 2001-2003 BMW 525i, rear; 2001-2003 BMW 530i, rear; 1997-2003 BMW 540i, rear; 1999-2003 BMW M5, rear; 1999-2001 BMW 323i, rear right; 2000 BMW 323Ci, rear right; 1999-2000 BMW 328i, rear right; 1997-2000 BMW 528i, rear.

What It Helps Address

• Incorrect ride height readings from a worn sensor
• Air suspension compressor cycling caused by bad height feedback
• Headlight leveling issues tied to chassis position data
• Suspension warning conditions related to sensor failure
• Damage from road debris, water, salt, or impact exposure

Installation Notes and Tips

Inspect the connector, linkage, and mounting points before installation. Verify the oval 1-connector, 6-terminal configuration matches the original part and confirm the vehicle position listed for your BMW or Rolls-Royce application. After installation, clear any stored suspension or lighting fault codes and confirm the system responds correctly at ride height.

Quality Assurance

Arnott supplies new aftermarket suspension components built for direct replacement use in air-suspension systems. RH-4437 is a standard-grade replacement sensor for BMW and Rolls-Royce applications where accurate height input is required for suspension control and headlight leveling.