When I go on-line for parts...my supplier of choice is JC Whitney. Nope, I'm not nuts... just dumb like a fox. Follow my rational.
You plan for the part... lots of time. I call JCW. Take lots of notes and ask them detailed questions abut the part and how long it will take to ship it and have it arrive. If they answer the questions and promise a ship date that I can live with, I order the part.
Now for the fun.
They ALWAYS screw up the order, somehow. So I calmly call them back and ask what they're going to do for me to keep my business? Usually they do one of two things:
- The give me a 25% discount
- They give me a 30% discount and the shipping
In any case, I get a quality part (Yes, JCW DOES have quality parts), at a more than fair price.
If I need the part tomorrow, and the order be correct, then I order from 4 Wheel Drive Hardware (NOT 4 wheel drive warehouse). This company is a class act and has NEVER disappointed me. Even when I screw up the order, and order the wrong part they're gracious and take back the part at no restock fee and say: "Thanks for your business." You can't do better than that.
As for NAPA, I use them locally, and have had a few disappointments. But they are my auto parts store of choice. They have good parts, and usually competent counter personnel who have given me more great information than I can shake a stick at. I save enough at NAPA to pay for the AAA membership when I use their discount. Also, they give an AARP discount. Often NAPA will have other discounts available... but you've got to ask. Once I was given an East Spokane Valley School District Discount when I wasn't even associated with the ESVSD. I also like the fact that it's a nation wide chain and warranty.
I also like the manuals on the Autozone site. They're great for simple, fast reference, and can be electronically saved. Just last week-end I used that site to replace the heater core in my 89 Crown Vic. It saved me HOURS of work disassembling and reassembling the dash.