The objective of this step is uncomplicated, avoiding getting scammed. With that in mind, our Mainland Auto Parts team suggests you applying the following filters:


Ask thyself questions like, does the merchant offer free shipping, or I need to transport the engine myself? In that case, ask yourself, do I have a suitable vehicle, or should I include the additional cost of shipping? Pro Tip. Favor sellers that offer free shipping to your location.

Type of seller

If you have come after our advice, you will probably have both private sellers and businesses on your list. Pro Tip. If you have many options to choose from, we recommend that you prefer established companies, as this gives you an extra layer of peace of mind and support.


Remain in mind that the average life of an engine is approximately 250,000 miles. For this reason, favor engines with less than 100,000 miles.

Pro Tip. You can verify the information provided by the seller using a service such as CARFAX.

Is the company reputable?

Assuming you have noticed our suggestion of favoring businesses over private sellers, it is a good idea to do a little analysis on the company’s reputation offering your engine. Is the business registered with the appropriate local association? What do the buyer reviews say? How many years has the company been in business? Your best ally for this research is common sense.

Pro Tip. If you have trouble getting information on Google about the company, or the company does not offer reliable contact information on its website, then discard it immediately.

Warranty coverage

Finally, after you have refined your list, it is time to analyze the seller’s warranty in detail. Be wary of warranties shorter than 30 days.

Pro Tip. Serious companies offer warranties of 90 days or more.