2007 Mercedes-Benz SL-Class Air Filter

Seal 171255UC has an inner diameter of 1.719 inches and outer diameter of 2.565 inches. A seal that has those dimensions would actually be #58846. I've added a link to a video review of this seal for you to take a look at.

Normal operating temperatures for drum brakes range from 150-400 degrees F. During certain stopping conditions the brake heat can exceed 600 degrees. The effectiveness and stopping power of the brakes is significantly reduced at these higher…

The Tekonsha OEM Vehicle Wiring Harness #22121 that you referenced includes all the wiring and parts necessary to install a fully functional 7-Way connector and trailer brake controller. The included brake controller harness is compatible with and…

In order to install a brake controller on a dump truck you'd first need to start with a 4-way trailer connector and then adapt this to a 7-way so you can hook up a brake controller. I won't have much info for anyone particular dump…

By "mobile home type bolt pattern" I believe you are talking about a 5 spoke utility bolt pattern such as what is on the Dexter Trailer Hub and Drum Assembly - 6,000-lb and 7,000-lb Axles #8-174-5UC3. To measure your axle from hub…

It sounds like when the Redarc Tow-Pro Elite Brake Controller #RED44FR was installed on your 2022 Toyota Highlander that they may have damaged the brake signal wire or tied into the wrong wire. I recommend taking it either back to the shop who…

You mentioned a 20 ton (40000 lbs) tag trailer with disc brakes. If you have a 20 ton trailer it would most likely come with air brakes. Next, you mention a tandem axle trailer with two 10000 lb axles and disc brakes, so I am thinking you were…

The correct replacement for a Demco Master Cylinder 05680-C is the Replacement Master Cylinder part #5650. I spoke with Demco to confirm this for you.

I do have an option for you but we do not carry the exact replacement you are looking for. For your trailer, I recommend using the Dexter Equalizers part #13-140-3. These equalizers are almost an exact replacement for the ones you currently have.…

Since you have 3,500 lb axles you'd want a bearing kit for this axle capacity and not a 7k axle as the bearings and seals are totally different. For a 3,500 lb axle you'd want the part #BK2-100 instead. This comes with the correct…

Thank you for all of the information! One of the common misconceptions with trailer wiring is that you just match up the colors so you are definitely not alone in that regards and I'm glad that you were able to correct the issue. Connecting…

When choosing the slider you want to measure the outside front of box width including the flange. Then you need to select a slider that extends a minimum of 2-1/2 inches beyond each side of the box width. For example, the Black Solera Slider…