2.12259 DT Filter head

This little piece seals the fuel filter housing. It keeps dirt, water, and anything else nasty out of your fuel system. It also maintains the right pressure within the filter itself. It’s basically a lid, but it’s a pretty important one. It’s part of the fuel delivery system, obviously. Fuel gets pulled from the tank, goes through the filter to get cleaned, and then heads to the engine. The cap is the last line of defense, keeping everything sealed tight. It’s right there on top of the fuel filter, usually under the hood somewhere, but sometimes it's located near the fuel tank. Well, if this cap fails, you’ll start getting contaminants into your fuel. That can clog up your fuel injectors, mess with your fuel pump, and generally cause all sorts of engine problems. You’ll notice if it's leaking—you’ll smell fuel, or see a wet spot. Even a small leak can be dangerous. A good fuel filter cap acts like a shield, preventing those problems. They can crack or the seal can go bad over time, especially with temperature changes and fuel exposure. You can find replacements pretty easily; places like Fixparts Online usually have them in stock. It’s a relatively inexpensive part, but replacing it when needed can save you a lot of headache – and money – down the road. Secure your purchase: Fuel Filter Cap (MPN 2.12259) includes a 12-month warranty!

About DT

Diesel Technic specializes in high-quality spare parts for commercial vehicles, offering reliability and durability for fleets worldwide.

Why Choose DT?

• We have the parts you need, even for older or less common vehicles. • Our prices are competitive – you get great value for your money. • We offer fast shipping, so you can get back on the road quickly. • Our customer service team is friendly and ready to help with any questions. DT delivers excellence, FixParts Online delivers to your door.