RANSOTO Xenon HID Ballast W3T19371 — D2S 35W with Built-In Igniter and IP68 Waterproof

RANSOTO W3T19371 is a complete xenon HID ballast with built-in igniter designed to restore reliable D2S 35W lighting for select Acura, Honda, Mazda and Mitsubishi models.

If your factory HID lamp is flickering, slow to start, or not reaching full brightness, the ballast (also called an igniter or control unit) is often the component that needs replacement. This RANSOTO assembly replaces several OEM numbers and is engineered to provide consistent ignition voltage and steady current so your bulb lights quickly and runs steadily. It’s built to the same form and electrical purpose as original equipment and is rated for tough temperature and moisture conditions.

How will this ballast improve my headlight performance?

Replacing a failing ballast eliminates intermittent flicker, delayed startup, and color shifting caused by unstable power to the xenon lamp. The RANSOTO unit supplies a precise startup pulse and regulated operating current to keep the D2S bulb producing steady white light near 6000K.

• Consistent ignition for fast lamp start
• Regulated output to prevent flicker and color drift
• Compatible with 35W D2S bulbs delivering about 3200 lumens
• IP68-rated protection against water and dust intrusion

Which vehicles and part numbers does this replace?

This ballast fits a broad set of late-2000s and early-2010s Acura, Honda, Mazda and Mitsubishi models that use D2S xenon systems. It cross-references many OEM part numbers so you can match it directly to your original unit.

• Fits Acura TL, TL-S, TSX, ILX, ZDX, RDX, MDX, CSX (2006–2014 ranges)
• Compatible with Honda Accord (2008–2013), CR-Z, CR-V, Odyssey (various years)
• Mazda 3, 5 and CX-5 plus Mitsubishi Lancer/Outlander models listed
• Replaces OEMs like W3T19371, W3T16271, W3T15671 and 33119-* series

What are the key technical specifications and durability features?

The RANSOTO ballast is engineered for automotive environments with temperature extremes and moisture exposure. It supports a 12V vehicle system and runs a standard 35W D2S bulb at about 3200 lumens and 6000K color temperature.

• Bulb type: D2S; Power: 35W; Voltage: DC 12V
• Light output: ~3200 lumens at 6000K color temperature
• Operating range: -40 ℃ to +80 ℃; waterproof rating IP68
• 360° beam handling via compatible D2S lamp; built-in igniter for startup

How does installation and support work if I need help?

Installation follows the same mounting and wiring points as the factory ballast for a straightforward swap; however, HID systems operate at high voltage, so caution and proper connectors are required. RANSOTO offers after-sales support and a warranty for quality-related problems—contact them for troubleshooting or replacement guidance.

• Direct replacement form factor for OEM-fit mounting
• Use proper D2S bulb and secure high-voltage connections
• Manufacturer warranty and customer support available

Who is this for: This ballast is intended for owners and mechanics restoring factory xenon headlights on compatible Acura, Honda, Mazda and Mitsubishi vehicles when the lamp fails to ignite, flickers, or exhibits color instability. It’s suitable for those wanting an OEM-style replacement with weather protection and cross-reference coverage for multiple original part numbers.