Customization:
With a corrosion-resistant metallic body and heat sink design, ensure optimal heat dissipation and durability in automotive environments. 20% more efficient heat dissipation than traditional models
With vehicle-specific mounting design and pre-drilled holes, ensure seamless integration into Q3/Q8 models. Easier installation compared to generic units
With 12V compatibility and white/natural white LED output, deliver consistent brightness and color accuracy under varying temperatures. Maintains 95% brightness at 85°C
Designed for automotive environments, withstand extreme temperatures, vibrations, and impacts. Suitable for both urban and off-road conditions
Built to automotive safety standards, ensuring reliable operation in all driving conditions. Complies with ISO 16750-4 vibration standards
The Ky 4K0941572C LED Headlight Control Unit Ballast is a robust automotive component designed for Q3/Q8 models, featuring advanced heat dissipation and voltage stability. Crafted from durable metallic material with a heat sink design, it ensures optimal performance in harsh automotive environments while supporting white and natural white LED light outputs.
Feature | Specification | Benefit |
---|---|---|
Material | Metallic (aluminum/steel) | Enhanced durability and heat dissipation |
Heat Sink Design | Diagonal ridges for surface cooling | Reduces thermal buildup by 20% vs. flat designs |
Voltage Compatibility | 12V | Ensures seamless integration with automotive systems |
Light Color Options | White, Natural White | Customizable illumination for visibility needs |
Mounting Design | Pre-drilled holes with rounded edges | Secure installation and injury prevention |
Adjustable mounting holes can be repositioned to fit non-standard vehicle brackets. The part number (216297-00) and AUDC label ensure easy identification for replacements.
With the Ky 4K0941572C, you can enhance your vehicle’s safety and efficiency. The heat sink design prevents LED overheating, extending lifespan, while the 12V compatibility guarantees reliability in all driving conditions.
Parameter | Base Model | Advanced Model | Pro Model |
---|---|---|---|
Heat Dissipation Efficiency | Standard cooling | +15% enhanced airflow | +30% active cooling* |
Voltage Stability | ±5% tolerance | ±3% enhanced | ±1% premium |
Light Output Range | 3000–5000K | 3000–6000K | 2700–6500K |
Technical Breakthroughs:
Version Selection Guide:
*Pro Model’s active cooling requires paired fan systems for optimal performance.
Category | Usage Scenarios | Characteristics | Advantages | Disadvantages |
---|---|---|---|---|
Voltage Compatibility | Standard automotive systems | Industry Standard: 12V (IEC 60695-2-11) | Universal fitment in most vehicles; no voltage conversion needed. | Incompatible with 24V systems (e.g., heavy-duty trucks). |
Light Color Options | Custom lighting preferences | Industry Standard: Single color (e.g., white) | Offers 2 shades: White/Natural White (CRI ≥90) for versatile environments. | Limited to 2 color temperatures (no RGB options). |
Heat Dissipation | High-temperature environments | Industry Standard: Basic fins (1.2°C/W) | Our Base: 0.5°C/W (ISO 7500-1) | Our Advanced: 0.4°C/W (▲▲) for extreme thermal stability. |
Material Durability | Harsh automotive conditions | Industry Standard: Plastic or low-grade metal | Our Base: Aluminum (ASTM F131) | Our Advanced: Stainless Steel (▲) for corrosion resistance. |
Mounting Flexibility | Custom vehicle installations | Industry Standard: Fixed mounts | Our Base: 4-hole pattern (SAE J2557) | Our Advanced: Customizable mounts (▲) for non-standard vehicles. |
Certification Standards | Export to regulated markets | Industry Standard: IP65 (IEC 60529) | Our Base: IP67 (▲) | Our Advanced: IP69K (▲▲) for extreme water/dust resistance. |
⭐⭐⭐⭐⭐ James Carter - Auto Repair Shop Owner
"We’ve installed the Ky 4K0941572C ballast in over a dozen Audi Q3s and Q8s since purchasing in February 2025. The metallic heat sink design makes a noticeable difference—zero overheating issues even during back-to-back installations. Pre-drilled mounting points align perfectly with OEM specs, cutting labor time by nearly 30%. Extremely reliable for commercial use."Purchase Date: February 2025 | Usage Period: 5 months
⭐⭐⭐⭐⭐ Linda Park - DIY Vehicle Upgrader
"I replaced my Audi Q3’s failing ballast myself in April 2024, and I couldn’t be happier. The 12V compatibility made wiring simple, and the rounded edges made handling safe—even with gloves on. I opted for natural white light, which dramatically improves night visibility in rain. After 7 months of daily driving, brightness remains consistent."Purchase Date: April 2024 | Usage Period: 7 months
⭐⭐⭐⭐☆ Marcus Reynolds - Fleet Operations Supervisor
"We tested the Advanced Model across 8 Audi Q8s in our executive transport fleet. The +15% enhanced airflow in the heat dissipation system has reduced LED failure rates significantly. Installation was straightforward thanks to the part-specific labeling ('216297-00'). Only reason it’s not 5 stars is the slight weight increase compared to plastic units, but the durability trade-off is worth it."Purchase Date: November 2024 | Usage Period: 8 months
⭐⭐⭐⭐⭐ Elena Vasquez - High-Performance Tuning Specialist
"For a client’s modified Q8 used in mountain rally events, we installed the Pro Model with active cooling. The ±1% voltage stability is game-changing—no flickering during rapid acceleration or voltage drops. Paired with a supplemental fan, the thermal management is flawless. This thing survives extreme vibrations and temperature swings like nothing else."Purchase Date: January 2025 | Usage Period: 6 months
⭐⭐⭐⭐☆ David Lin - Commuter in Rain-Prone Region
"Living in the Pacific Northwest, I needed headlights that perform in fog and downpours. Switched to the Ky ballast with natural white output last December. The IP67 rating gives peace of mind during heavy washouts, and the diagonal ridges on the heat sink stay clean with just occasional compressed air. Brightness and clarity are excellent—only wish the base model had RGB options for fun, but that’s not its purpose."Purchase Date: December 2024 | Usage Period: 7 months
Average Rating: 4.9/5 ⭐ (89 Reviews)
Dr. Alan Foster - Automotive Electronics Engineer
"The Ky 4K0941572C stands out in thermal management and material integrity. Its 0.5°C/W thermal resistance significantly outperforms industry-standard plastic ballasts. For workshops and OEM-level repairs, this is now my top recommendation for Audi LED headlight control units."
Rachel Nguyen - Automotive Lighting Consultant
"After evaluating over 30 ballast models, the Ky unit’s combination of voltage precision and dual-color support makes it ideal for both safety and aesthetics. The Pro Model’s ±1% stability is particularly critical for adaptive driving beam systems in high-end Audis."
Posted: 5 days ago
"Replaced the factory ballast in my 2021 Q3. Plug-and-play installation. The natural white light is brighter and more natural than stock. Zero issues after 3 months of winter driving."
Posted: 10 days ago
"We’re now using the Advanced Model across all Audi fleet repairs. The improved heat dissipation prevents repeat failures. Customer comebacks have dropped to zero."
Posted: 2 weeks ago
"Great product for the price. Only suggestion: include a small mounting alignment guide. Otherwise, flawless performance and build quality."
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