* Auto Parts Stores: Major chains like AutoZone, Advance Auto Parts, NAPA Auto Parts, and O'Reilly Auto Parts will likely have them in stock or be able to order them. You'll need to provide your truck's engine size (e.g., 4.9L, 5.0L, 5.8L) to ensure you get the correct lines.
* Online Retailers: Sites like Amazon, eBay, and RockAuto are good options. Again, specifying your engine is crucial for finding the right fit. Look for listings that specifically mention "emission vacuum lines" or "vacuum hoses" for your year and model.
* Ford Dealerships: While often more expensive, a Ford dealership can guarantee genuine Ford parts, ensuring a perfect fit.
* Local Auto Parts Stores: Smaller, independent auto parts stores in your area might also carry them.
Recommendation: When ordering online or visiting a store, bring your truck's VIN number. This will help ensure you get the correct vacuum lines. You might also want to take a picture of the existing lines (if possible) to aid in identification.