Marelli LRB370 High Intensity Discharge (HID) Lighting Ballast - Right

Marelli LRB370 HID Ballast for Audi Right Side

The Marelli LRB370 is a high intensity discharge (HID) lighting ballast for the right side of select Audi models. It is a direct-fit electrical lighting component for restoring proper HID headlamp operation on applications such as Audi TT Quattro, Audi TTS Quattro, Audi A3, Audi A4, and related models.

Key Features

• Brand: Marelli
• Part number: LRB370
• High intensity discharge (HID) lighting ballast
• Right-side exterior lighting application
• Fits select Audi TT, TT Quattro, TTS Quattro, TT RS Quattro, A3, A3 Quattro, Q3 Quattro, S3, A4, A4 Quattro, S4, and RS4 models

Detailed Description

The Marelli LRB370 HID ballast is used in the exterior lighting system to support HID headlamp function on the right side. This part number LRB370 is listed for multiple Audi platforms, including 2007-2015 Audi TT Quattro, 2009-2015 Audi TTS Quattro, 2007-2014 Audi TT, 2011-2014 Audi TT RS Quattro, and several Audi A3, A3 Quattro, Q3 Quattro, S3, A4, A4 Quattro, S4, and RS4 applications. If you are searching for a right HID ballast for Audi TT Quattro or a replacement Marelli LRB370 for Audi A4 lighting repair, this part matches the confirmed fitment data provided.

What It Helps Address

• Right headlamp HID output failure
• Intermittent or no low-beam illumination on HID-equipped vehicles
• Ballast-related headlight warning conditions
• Uneven lighting performance on the right side
• Electrical faults within the HID lighting circuit

Installation Notes and Tips

Verify the vehicle’s headlamp type and right-side application before ordering. Confirm the part number LRB370 against the original ballast and match the Audi model year exactly, since fitment varies by platform and production date. Professional installation is recommended for HID lighting components because the system contains high-voltage electrical parts.

Quality Assurance

Marelli is an established OE supplier in automotive electrical and lighting systems, and this ballast is built for the specified Audi applications listed above. This part cross-references no additional part numbers in the provided data.