1、Applicable Model: The HID headlight ballast control unit is for TL TLX, for S2000 2004 to 2009, for 3 2004 to 2006. Please confirm whether it is consistent with the product you want before buying to avoid unnecessary return. 2、OE Number: The part numbers for reference are W3T10471, W3T12472, W3T14371, X6T02971, X6T02981, X6T02993, 33109‑S0K‑A02, 33109‑S2A‑J01, 33119‑S0K‑A10, 33119‑SCC‑003. 3、Reliable Performance: HID headlight ballast is made of premium aluminum alloy material for excellent heat dissipation, resistant to vibration, wear, high temperature and oxidation, ensuring excellent durability and reliability. 4、Perfect Replacement and Easy Installation: The headlight control unit module is an ideal replacement for damaged or old headlight ballasts, perfect fit and easy installation. Plug and play replacement, no need for programming or coding, suitable for front left or right headlight. 5、Enhanced Safety: The ballast converts voltage, stabilizes current, and protects against surges to ensure the headlight works in a safe environment and extend the lifespan of the headlight. Item Type: HID Headlight Ballast Control Unit Installation Position: Front Left or Front Right Attachment Type: Direct Replacement, No programming or coding needed OE Number: W3T10471, W3T12472, W3T14371, X6T02971, X6T02981, X6T02993, 33109-S0K-A02, 33109-S2A-J01, 33119-S0K-A10, 33119-SCC-003 Fitment: Fit for TL 2002-2005 Fit for TL Type-S 2002-2005 Fit for TSX 2002-2005 Fit for S2000 2004-2009 Fit for 3 2004-2006 1 x Headlight Ballast Control Unit 1 x Igniter 1 x Wiring Harness