---
product_id: 44524195
title: "Replacement Xenon HID Ballast for Cadillac DTS, Audi A4 S4, Saab 9-7x, Volvo Headlight Control Unit Module Replaces 307 329 115, 307 329 098"
brand: "genxenon"
price: "$113.59"
currency: USD
in_stock: true
reviews_count: 9
category: "Gen Xenon"
url: https://www.desertcart.us/products/44524195-replacement-xenon-hid-ballast-for-cadillac-dts-audi-a4-s4
store_origin: US
region: United States of America
---

# 12V power for stable lighting Plug-and-play, no coding needed Lifetime USA warranty Replacement Xenon HID Ballast for Cadillac DTS, Audi A4 S4, Saab 9-7x, Volvo Headlight Control Unit Module Replaces 307 329 115, 307 329 098

**Brand:** genxenon
**Price:** $113.59
**Availability:** ✅ In Stock

## Summary

> ⚡ Illuminate your drive with confidence—never settle for dim again!

## Quick Answers

- **What is this?** Replacement Xenon HID Ballast for Cadillac DTS, Audi A4 S4, Saab 9-7x, Volvo Headlight Control Unit Module Replaces 307 329 115, 307 329 098 by genxenon
- **How much does it cost?** $113.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/44524195-replacement-xenon-hid-ballast-for-cadillac-dts-audi-a4-s4)

## Best For

- genxenon enthusiasts

## Why This Product

- Trusted genxenon brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Shockproof design with premium components ensures durability and consistent performance.
- • **Effortless Plug & Play:** Direct OEM-compatible replacement—no programming or coding required, saving you time and hassle.
- • **Lifetime Peace of Mind:** Backed by a lifetime USA warranty—because your ride deserves nothing less.
- • **Diagnose with Confidence:** Easily test by swapping ballasts between headlights to pinpoint faults before replacement.
- • **Universal Fit for Luxury Rides:** Fits left or right headlights on Cadillac DTS, Audi A4/S4, Saab 9-7x, and Volvo models (2004-2011).

## Overview

This GenXenon Replacement Xenon HID Ballast is a direct, plug-and-play substitute engineered to meet or exceed OEM standards for select Cadillac, Audi, Saab, and Volvo models. Featuring a shockproof design and backed by a lifetime USA warranty, it offers a reliable, hassle-free solution to restore your headlights’ brilliance without programming or coding. Compatible with both left and right headlight positions, it’s the smart upgrade for discerning drivers who demand durability and performance.

## Description

This ballast is exclusively designed for GenXenon to meet or exceed OEM specifications while delivering a cost-effective alternative to the factory part. Built with high-quality surface mount and through-hole components. Direct plug-and-play replacement without the need to program or code the car. Before installing, please try this part on your working headlight first to verify function. -- -- -- Fits: 2006-2008 Cadillac DTS (please see compatibility notice) -- -- 2006-2009 Audi A4 / S4 Sedan and Wagon (w/o curve lighting) -- -- 2007-2009 Audi A4 / S4 / RS4 Cabrio (w/o curve lighting) -- -- 2006-2008 SAAB 9-7x -- -- 2007-2011 Volvo C30 -- -- 2006-2011 Volvo C70 -- -- 2004-2007 Volvo S40 -- -- 2005-2007 Volvo V50 -- -- -- Replaces AL BOSCH ballasts with part numbers: 307 329 115, 1 307 329 098, 1 307 329 121, 307 329 123, 1 307 329 124, 307 329 129, 307 329 203, 307 329 250, 307 329 293, 307 329 294

Review: Works as it should. - Worked as advertised for 2007 Cadillac TD’s.
Review: Great replacement for OEM ballast for GM. - These rock. I had to replace all of the ballast for my Cadillacs. This is the one I get. One pair had about 5 years of daily driver service, and they were still going strong. This is important to me. Getting to them in the cadillac means I have to drop the bumper. It's not a 5 minute fix, you'll be out there for 1/2 hour a side. I don't want to have to do this again. I didn't need to replace the actual bulbs. Just the ballast.

## Features

- DIRECT REPLACEMENT — This aftermarket ballast is 100% compatible and a direct replacement for your existing part. Designed to meet or exceed OEM specifications. Plug-and-play installation with no need to program or code the car. Fits either the left or right headlight.
- WILL THIS FIX MY HEADLIGHT? — To properly diagnose your headlight fault, try moving the ballast from your working side to the non-working side. If the headlight begins to work, this replacement ballast will fix the problem. If the problem persists, a different component is causing the fault (most likely the bulb or wiring).
- LIFETIME USA WARRANTY — All parts from GenXenon are guaranteed for life. In the unlikely event that your part fails or needs to be replaced, please contact us and we will promptly exchange your part.
- FITS — 2006-2008 Cadillac DTS (please see compatibility notice) -- 2006-2009 Audi A4 / S4 Sedan and Wagon (w/o curve lighting) -- 2007-2009 Audi A4 / S4 / RS4 Cabrio (w/o curve lighting) -- 2006-2008 SAAB 9-7x -- 2007-2011 Volvo C30 -- 2006-2011 Volvo C70 -- 2004-2007 Volvo S40 -- 2005-2007 Volvo V50

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B073R2Y8YN |
| Auto Part Position | Front Left, Front Right |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #204,716 in Automotive ( See Top 100 in Automotive ) #2,252 in Automotive Headlight Assemblies |
| Customer Reviews | 4.3 4.3 out of 5 stars (383) |
| Date First Available | July 5, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1 pounds |
| Item model number | 8542082563 |
| Manufacturer | GenXenon |
| Manufacturer Part Number | GX-AL3 |
| Number of Pieces | 1 |
| OEM Part Number | 1307329115, 1 307 329 115, 1 307 329 098, 1307329098, 1 307 329 121, 1307329121, 1 307 329 123, 1307329123, 1 307 329 124, 1307329124, 1 307 329 129, 1307329129, 1 307 329 203, 1307329203, 1 307 329 250, 1307329250, 1 307 329 293, 1307329293, 1 307 329 294, 1307329294, 31213765, 31213766, 30678910, 30678911, 8E0 907 391 B, 8E0907391B, 8E0907391 B |
| Package Dimensions | 5.63 x 5.35 x 1.38 inches |
| Special Features | Shockproof |
| UPC | 853914007098 |
| Voltage | 12 Volts |

## Product Details

- **Brand:** GenXenon
- **Fit Type:** Vehicle Specific Fit
- **Light Color:** OEM
- **Light Source Type:** High Intensity Discharge (HID)
- **Wattage:** 35 watts

## Images

![Replacement Xenon HID Ballast for Cadillac DTS, Audi A4 S4, Saab 9-7x, Volvo Headlight Control Unit Module Replaces 307 329 115, 307 329 098 - Image 1](https://m.media-amazon.com/images/I/A1nAD+yvrgL.jpg)

## Questions & Answers

**Q: Would this work for a headlight 8E0 941 003 AH?**
A: Hello! No, unfortunately this will not work with that headlight.  That headlight has adaptive/AFS/curve lighting and requires an OEM ballast.  This ballast will not fit (mounting holes and connectors are different).

**Q: What are the terms of your 6 year warranty for this ballast?**
A: Hello! The 6-year warranty covers the ballast under an exchange and excludes water damage due to a leaking headlight (most often in the Cadillac DTS).  You may at any time contact us at help@genxenon.com and we'll take care of you :)

**Q: Is this the correct ballast for the following headlights? 8E0 941 004 AH is the headlight model number**
A: Hello! No. This will not fit that headlight.  Your headlight has AFS (curve lighting).  Unfortunately there are no aftermarket replacements for your headlight.  You need to buy an OEM one.

**Q: What do you do if you find green marks in the connection?**
A: Hello! That means the headlight housing is leaking and letting in water.  Do not install a new ballast until you repair the leak or replace the headlight housing.  The leak could be caused by a number of factors.  Sometimes it could be the rear access caps but usually it is the lens that has a bad seal to the housing.  This would require removing the lens from the housing and re-sealing it.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as it should.
*by D***S on August 27, 2025*

Worked as advertised for 2007 Cadillac TD’s.

### ⭐⭐⭐⭐⭐ Great replacement for OEM ballast for GM.
*by R***S on October 18, 2025*

These rock. I had to replace all of the ballast for my Cadillacs. This is the one I get. One pair had about 5 years of daily driver service, and they were still going strong. This is important to me. Getting to them in the cadillac means I have to drop the bumper. It's not a 5 minute fix, you'll be out there for 1/2 hour a side. I don't want to have to do this again. I didn't need to replace the actual bulbs. Just the ballast.

### ⭐⭐⭐⭐⭐ Perfect fit and It's working so far.
*by L***H on August 26, 2024*

This Ballast costs a little more than some competitors, but it works and has a warrantee. Others failed right out of the box. We will have to see how long it lasts.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-27*