My lovely bride’s 2010 Mazda 3 Grand Touring edition was in the shop last week getting a control arm repaired by the trusty team at Park Service. They noticed the headlight levelizer rod was broken and the only way to replace it is to order the entire headlight sensor assembly from Mazda for about $400.

I asked Park Service to focus on the control arm and to leave the broken levelizer rod on the seat of the car for me to look at. After getting it home, I found the headlight levelizer rod is composed of a few parts, including the THK S3-1 aluminum rod/link and bolts that can pivot with seals stamped THK F6BLV. I thought about using Blue Demon equivalent welding material to fix the part, shown below, but one of the pivot points also had a torn rubber seal that probably allowed salt to get in and corrode the joint – not worth fixing. Having the intact part allowed me to measure the bolt spacing with my digital calipers, about 57 mm.

I hit the web and found similar parts made by Cusco comprised of adjustable THK parts. Based on Cusco’s chart, below, it appears our Mazda needs the “super short” model, part number 00B 628 C, thanks TH Motorsports.

** Update 4-10-2020 **
Part arrived from TH Motorsports via UPS Ground. I was rotating the tires today so I through the part on. Really easy to get on, especially when you’re rotating the tires. Headlights seem to be leveling again – woohoo!