1.12128 DT Fuel filter

This filter does exactly what the name says – it separates water from your fuel. Modern fuel systems are pretty sensitive, and water getting in there can cause a lot of problems. The filter physically traps water droplets and prevents them from reaching your engine. It also, of course, filters out dirt and debris just like a regular fuel filter. It's basically two jobs rolled into one. It sits in your fuel line, usually before the fuel pump or sometimes even before the fuel tank. Think of it as the first line of defense against contaminated fuel. Diesel engines are particularly susceptible to water damage, so you’ll see these a lot on trucks and other diesel vehicles, but gas engines can definitely benefit from them too, especially if you ever suspect your fuel quality might be an issue. Water in your fuel can cause all sorts of headaches. It doesn’t burn like gasoline or diesel, so it messes with combustion, leading to rough running, poor performance, and even engine damage. It can cause corrosion inside the fuel system, and in freezing temperatures, it can freeze and block the fuel line completely. This filter acts like a shield for all those delicate fuel system components. You’ll notice if it's failing because your engine might start sputtering, losing power, or having trouble starting, especially after a fill – up. Replacing it regularly is just good preventative maintenance. You can find these pretty easily, and places like Fixparts Online usually have a good selection. Keeping this clean is a small price to pay for a healthy engine. Trusted by drivers: Water Separator Fuel Filter (MPN 1.12128) comes with a 12-month warranty!

About DT

DT is a reputable German brand specializing in high-quality spare parts for commercial vehicles. Based in Germany, DT provides reliable components that support the durability and performance of automotive fleets.

Why Choose DT?

• We have a huge selection of parts, so you’re likely to find what you need, fast. • Our parts are high quality and built to last, saving you money in the long run. • We offer fast, reliable shipping right to your door. • Our customer service team is friendly and knowledgeable – we're here to help! Performance you can rely on – DT parts from FixParts Online.