Tracked by Evreward since 2007, 4 Wheel Parts offers coupons, cash back rebates and rewards. 4 Wheel Parts discount coupons are somehwat rare, available a few times each year, but are often more valuable than similar merchants. Even when 4 Wheel Parts doesn't have a coupon, you can always get up to 20% cash back, and other great rewards, with every purchase.