When changing the fuel pump does anything else need to be replaced?

While changing a fuel pump doesn't *always* require replacing other parts, it's often a good idea to consider replacing or at least inspecting several components at the same time, since you're already doing the labor-intensive job of accessing the pump. The necessity depends on the age and condition of your vehicle.

Here's what to consider:

* Fuel Filter: This is the most common item to replace alongside the fuel pump. A clogged fuel filter can damage a new fuel pump, and a failing fuel pump may have already damaged the filter. They work together, so replacing both ensures optimal fuel delivery.

* Fuel Pump Strainer (sock): This is a fine mesh filter located within the fuel tank, often attached to the fuel pump assembly. It's relatively inexpensive and readily replaced during the fuel pump replacement. Ignoring it risks debris getting to the new pump.

* O-rings and seals: These are vital for preventing fuel leaks. While you might reuse the old ones, it's safer and recommended to use new O-rings and seals to ensure a proper and leak-free seal.

* Fuel lines (if damaged): Inspect the fuel lines for cracks, kinks, or other damage. If you find any, replace the affected sections.

* Fuel tank sending unit (if applicable): If the fuel gauge is inaccurate or the sending unit shows signs of wear, replacing it simultaneously might be beneficial. However, this is less directly related to the fuel pump itself.

In short: Replacing the fuel filter is almost always recommended when changing the fuel pump. Inspecting and potentially replacing the strainer and seals is also wise. Other components are considered on a case-by-case basis depending on their condition. The cost of these additional parts is usually small compared to the labor of replacing the fuel pump.