2PCS Xenon Ballasts D3S Bulb Control Unit for Model S 2012-2015 Headlight Ballast Control Unit Module Replacement for Muss-Tang 2010-2019, 8A5Z13C170A DL3Z-13C170-A 7L7Z-13N021-A

REPLACE PART NUMBER: 8A5Z13C170A, 8A5Z-13C170-A and DL3Z-13C170-A. Bulb is 7L7Z-13N021-A

FUNCTION: Directly replace the original parts that fail due to electrical or mechanical failure, protects internal electronic components from oxidation and aging, play a stabilizing role.

DURABLE CONSTRUCTION: The xenon HID headlight ballast module has passed extensive quality and safety performance tests, safe and reliable. Headlight ballast module is made of high-quality materials, solid and durable, not easy to deform, and long service life.

EASY TO INSTALL: This xenon d1s hid ballast control unit is easy to install, directly replace the old or damaged one, matches the original equipment perfectly.

FITMENT: The xenon hid headlight ballast control unit with igniter & d3s bulb compatible with some specific models. Please carefully check your vehicle model and the part numbers to make sure the part is compatible.