Tekonsha does not offer replacement circuit boards or converter boxes for their kits like the # 118547 so your best option is to go with an all new kit as it's only way to order the box. view full answer...
Unfortunately I can't find the bearing replacement information online, so to ensure you get the correct replacement you will need to pull one of the hubs. The hubs will have two bearings and on the face of each one there is a number. If you can get me the number on those bearings as well as the number on the grease seal on the backside of that hub, I can help you get the correct replacement.
If you cannot get the bearing numbers, then you can measure the spindle using a digital caliper... view full answer...
Even if you had the hardware you would not want to reuse it on a hitch. The replacement hardware kit you need is # RHK. You'll need to in put the model number of the hitch receiver you have and then choose the manufacturer from the drop down. This way you'll get the exact hardware that was included with the hitch originally.
For your 2007 Nissan Quest the Curt # C13563 is confirmed to fit.
If you're going to be towing with your Quest you'll also need a wiring harness. The Tekonsha... view full answer...
We've got just what you're looking for. To replace your K003 keys you'll need the Replacement Keys for Malone SteelTop Roof Racks - Key K003 - Qty 2 # MPG1000-K003. view full answer...