You should:
* Check your vehicle's identification number (VIN). This is the most accurate way to determine the exact specifications of your vehicle. You can use this number at a parts store (online or in-person) to find the correct fuel pump.
* Look up your vehicle's specifications in your owner's manual. This will also list the engine size.
* Check the fuel pump itself (if accessible). The pump might have a part number printed on it.
Once you have the engine size, you can easily search online (e.g., Amazon, AutoZone, Advance Auto Parts) or visit a local auto parts store to find the correct fuel pump. Be sure to specify the year, make, model, and engine size when searching.