RockAuto is my favourite website. Incredibly simple and utilitarian, but also quite powerful. You can easily drill down or search for parts, depending on what is more intuitive to you. Price comparison is automatic, and grouped into useful price/quality categories. You can see year/make/model compatibility for a part number once you’ve found it, as well as a brief description, at least 1 picture (usually more), and determine whether it will be shipped from the same warehouse as other parts in your cart. It does all this with 0 friction, from one page, blazing fast on any platform. I end up ordering almost all my car parts there, not because they necessarily sell the best parts but because it’s just so easy to.