Online parts coupon codes?
 

Has anyone found the key or the code to get a few percent off
from these large parts houses?

FCP sometimes sends a 5% off "hurry your cart will expire soon"
notice.

Would be nice to get some kind of loyalty perks.

Fcp said they don't do codes anymore since they have discounted prices all the time. But if you add parts to your cart and let them sit for a day, they still send the 5% off code to check out now.

I'll use furiousmethod.com to get prices from multiple sources and then have FCP match them. That works best for me. Get the prices I want and the lifetime warranty from FCP too!