http://www.rockauto.com/lang/en/policy.html#Cores
Cores
Some of the parts we sell are remanufactured. These parts are identified in our catalog as "remanufactured" or "reman."
For parts like alternators and master cylinders, the basic body (a complex and expensive metal casting) usually is very durable. But components, like bushings and seals, can wear out and cause the part to fail. Replacing just the worn components can be very cost-effective, helps protect the environment, and produces very reliable results. (Visit Cardone Industries, our primary supplier of remanufactured parts, for more information about remanufacturing.)
Remanufactured parts usually have a core charge. The core charge is a deposit that the manufacturer charges us, and which we pass on to you, to encourage the return of old parts to be remanufactured. You pay the core charge when you place your order. If you return the old part to us, we refund the core charge.
To receive credit, cores (except for complete engines and transmissions) must be returned within six months of the date your order was placed. Complete engine and transmission cores must be returned within 60 days from the date your order is delivered.
Cores must be complete, rebuildable, fit the same vehicle application and be returned in the box the remanufactured part came in. This means the part you send back needs to have whatever components (like pulleys) came on the remanufactured part. The box helps identify the part and proves to the manufacturer that the core replaces one of their products. Obviously, the core won't be working well (or you wouldn't have replaced it) but it can't be smashed, rusted solid, or otherwise unusable. (We rarely reject a core. If the part came off a running vehicle and just wore out--no problem. But please don't send a part that's been soaking in junkyard mud for 5 years and expect to receive core credit!)
Shipping charges on cores aren't refundable. (Before sending back a core, you'll need to decide if the core deposit is worth the shipping cost.) As with any return, before returning a core you must obtain and follow return instructions from our Order Status & Returns page or via email.
