A Used V6 Arrives by Freight. What We Check Before It Goes In

In January 2025 a used V6 arrived for a job in our driveway. In our photo it hangs from the hoist chain in front of a white sedan with its hood up. It is still partly wrapped in black plastic, and a freight label is still stuck to the wrap.

More and more engines get bought online and shipped by freight. That can be a smart way to find a good engine. It also adds a few risks. Here is what we check when a shipped engine shows up, before it goes anywhere near the car.

What We Saw

Check It on Delivery Day

Freight companies and sellers usually want damage reported fast. So the first look happens when the engine comes off the truck, not a week later. We take photos of the crate or pallet, the wrap and every side of the engine.

• Cracked or broken plastic parts, like the intake, valve covers or sensor housings.
• Bent brackets, pulleys or the oil pan.
• Broken sensors or snapped wiring pigtails.
• Openings left uncovered, which can let dirt or water in.
• Oil or coolant leaking out of the engine in the wrap.

Make Sure It Matches

An engine that looks the same may not be the same. Different years and models can use different sensors, wiring plugs, mounts and computer settings. Before install day, we compare the shipped engine to the old one part by part. Any part that does not match gets swapped over from the old engine, or ordered.

We also check the oil on the dipstick and under the cap. Clean oil is a good sign. Milky oil or heavy sludge is a reason to call the seller before going any further.

Why the Wrap Stays On

In our photo, the engine is still partly wrapped while it hangs on the hoist. That keeps dirt and grit off it until the last moment. Ports and openings stay covered until the parts that connect to them are ready to go on. Anything that falls into an intake port can end up in a cylinder.

Used, Rebuilt or New

A used engine comes out of another car and is sold as it is, often with a short warranty. A rebuilt engine has been taken apart, measured and fitted with new wear parts. A new engine comes from the maker. Each one costs more than the last, and each one comes with fewer unknowns.

For a daily driver that is otherwise in good shape, a good used engine can make a lot of sense. For a car you plan to keep for many years, a rebuilt engine may be worth the extra money. We will tell you which way we would go for your car and why.

Whatever you choose, keep the receipt, the warranty card and the photos from delivery day in the glove box.

What It Means for Your Car

If you buy an engine online, read the warranty before you pay. Many require the engine to be installed by a shop, with new seals and fluids, to keep the warranty valid. Keep the paperwork and the photos. Ask your mechanic to check it on delivery.

Used engines can be a good value. Our engine replacement cost guide compares used, rebuilt and new. We install engines at our San Jacinto shop. See our engine repair page for more.