Cheaper and higher quality parts compared to other...

Cheaper and higher quality parts compared to other parts store chains.

Rockauto is my go-to place since they stock reputable name brand parts such as Bosch, Denso, NGK, etc. which are sometimes recommended by the owner's manual. They have cheaper prices than local parts stores, even when accounting for shipping. They also accept returns with no hassle. For example, I accidentally bought the wrong crank sensor for one of my vehicles. Rockauto accepted the return of the new part, even though I already test fitted it on my car.