This part’s job is pretty straightforward – it controls the fuel pressure going to the engine. It takes the higher pressure from the fuel pump and reduces it to a consistent level the engine can actually use. It’s basically a valve that opens and closes to maintain that steady pressure. Some also regulate vacuum to certain engine components. It fits into the fuel line, usually near the fuel rail. It’s part of the fuel delivery system, working alongside the fuel pump, fuel filter, and injectors. Everything needs to work together to get the right amount of fuel to the engine when it’s needed. It's a relatively small piece, but it's essential to keep things running smoothly. If this thing fails, you’ll notice if you're lucky. You might get rough idling, poor fuel economy, trouble starting, or even a complete no – start situation. It acts like a shield, protecting the fuel injectors from getting too much pressure, which could damage them. It's one of those parts that, when it's good, you don't think about it. When it goes bad, it can cause a lot of headaches. You can find a replacement pretty easily, even places like Fixparts Online have them in stock. Replacing it when it's showing signs of failure can save you from bigger, more expensive repairs down the road. Confidence in every purchase: Pressure Regulator (MPN 038129101C) is covered by a 12-month warranty!

About Audi

Audi is a renowned German automobile manufacturer known for its innovative engineering, luxurious designs, and cutting-edge technology, delivering premium vehicles that blend performance and sophistication.

Why Choose Audi?

• Audi parts are made specifically for your vehicle, ensuring a perfect fit and reliable performance. • Using genuine Audi parts helps maintain your vehicle’s original quality and resale value. • Audi parts are rigorously tested to meet high safety and performance standards, giving you peace of mind. • We offer a wide range of Audi parts, so you can easily find what you need to keep your car running smoothly. FixParts Online – Your Trusted Source for Quality Audi Auto Parts.