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Genuine Audi TT Voltage Regulator

Adjustable Voltage Regulator
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4 Voltage Regulators found

  • Diagram for Audi TT Voltage Regulator - 070-903-803-E
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    Audi TT Voltage Regulator Part Number: 070-903-803-E

    $237.99 MSRP: $333.32
    You Save: $95.33 (29%)
    Ships in 1-2 Business Days
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    Product Specifications
    • Other Name: Regulator
    • Warranty: This genuine part is guaranteed by Audi's factory warranty.
    Fits the following Vehicles:
    • 2009, 2000-2006 Audi TT | Base | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
  • Diagram for Audi TT Voltage Regulator - 06B-903-803-B
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    Audi TT Voltage Regulator Part Number: 06B-903-803-B

    $300.46 MSRP: $420.82
    You Save: $120.36 (29%)
    Ships in 1-2 Business Days
    ADD TO CART
    Product Specifications
    • Other Name: Regulator
    • Replaces: 03C-903-803, 06B-903-803-A, 5U0-903-803-A
    • Warranty: This genuine part is guaranteed by Audi's factory warranty.
    Fits the following Vehicles:
    • 2008-2009 Audi TT | Base | 4 Cyl 2.0 L GAS
  • Audi TT Voltage Regulator - 038-903-803-K
    Diagram for Audi TT Voltage Regulator - 038-903-803-K
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    Audi TT Voltage Regulator Part Number: 038-903-803-K

    $72.00 MSRP: $100.83
    You Save: $28.83 (29%)
    Ships in 1-2 Business Days
    ADD TO CART
    Product Specifications
    • Other Name: Regulator
    • Replaces: 078-903-803-C, 06B-903-803, 038-903-803-J
    • Warranty: This genuine part is guaranteed by Audi's factory warranty.
    Fits the following Vehicles:
    • 2000-2006 Audi TT | Base | 4 Cyl 1.8 L GAS
  • Audi TT Voltage Regulator - 038-903-803-E
    Diagram for Audi TT Voltage Regulator - 038-903-803-E
    View related parts

    Audi TT Voltage Regulator Part Number: 038-903-803-E

    $105.01 MSRP: $147.07
    You Save: $42.06 (29%)
    Ships in 1-2 Business Days
    ADD TO CART
    Product Specifications
    • Other Name: Regulator
    • Replaces: 038-903-803-EX
    • Warranty: This genuine part is guaranteed by Audi's factory warranty.
    Fits the following Vehicles:
    • 2000-2006 Audi TT | Base | 4 Cyl 1.8 L GAS

Audi TT Voltage Regulator

A control unit that regulates the output of the alternator is known as a Voltage Regulator. It provides Audi driver a certain confidence that each circuit in the car will receive power whenever needed. The sensing loop in the device acts fast on milliseconds timescales. It can determine the battery condition and any electrical load. You can either raise or lower the field current. Therefore, the voltage stays in the ideal 13.5 to around 14.5 volts range. Above all, this range preserves battery health and prevents sensitive control units from spikes and drops. The device is silent and automatic in operation, so the guesswork is eliminated, enabling reliable performance every day and protecting essential systems like engine management, lighting, infotainment, and active safety systems. Customers appreciate that this component bolts directly into your factory alternator housing on your TT coupe or roadster without additional modification, ensuring exact fitment that maintains original build quality from Audi's factory. Thanks to the precision modulation, the headlamps are bright even when performing dynamic driving at night. Moreover, the performance feel is enhanced and sluggish starts are prevented after taking short trips in the city. This maintains the day-to-day safety that long-serving Audi drivers expect. The Voltage Regulator is constructed with robust semiconductor controls and heat-resistant housing materials that can withstand the thermal cycling and vibration seen in a sports chassis for long life and little downtime. This specially designed Voltage Regulator also ensures the virtual cockpit power up instantly, enhancing the model's reputation for high-tech convenience cherished in the Audi scene. The component aids in achieving a smoother throttle response thanks to higher electrical efficiency, as the power generated ensures that voltage remains stable, letting the engine sensors report accurately. As a result, the powertrain computer can fine-tune fuel delivery, contributing to an overall improvement in performance. This combination of protection, efficiency, and plug-in compatibility has made the Audi community trust the Voltage Regulator, a small yet important hero in the dynamic TT family.

Choose original equipment manufacturer Voltage Regulator for great performance and strong durability. They use Audi's official craftsmanship and high-grade materials, and meet strict quality standards. Are you looking for quality Voltage Regulator at a good price? Come to our online store. We carry a wide range of genuine parts for your Audi TT and the prices are competitive. Each part comes with the manufacturer's warranty. You can install with confidence and get steady results. Over time, you'll save money and avoid hassle. Keep your maintenance simple and protect your vehicle with OEM parts. Get the quality your TT needs now.

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