Freightliner SD 108-122 Dash Knobs

Frequently Asked Questions About Freightliner SD 108-122 Dash Knobs

What are these dash knobs used for?

These knobs are replacement controls for the dashboard switches and levers on Freightliner SD 108 and 122 model trucks, including functions like heater and AC controls, vent adjustments, headlight switches, and other dash-mounted controls. If your original knob has cracked, worn smooth, or gone missing, these are designed to restore normal function to that specific control.

Will these knobs fit my specific Freightliner SD model and year?

Fitment can vary depending on the exact dash configuration, model year, and which control the knob operates, since Freightliner has used different switch and lever styles over the years. Always check the listed compatibility details and, when possible, compare the shaft size, shape, and mounting style of your old knob before ordering to make sure it matches.

How do I install a replacement dash knob?

Most dash knobs are designed for simple installation. In most cases, you can pull or twist off the old knob and press or thread the new one onto the same shaft or stem. Some knobs may be secured with a small set screw or retaining clip, so it is a good idea to inspect your old knob before removing it so you know what to expect when installing the new one.

What materials are these knobs made from, and how durable are they?

Dash knobs in this category are typically made from durable plastic or rubberized materials designed to handle daily use in a working truck cab. They are built to withstand regular twisting, pulling, and pushing, but like any dash component, they can wear or fade over time with heavy use and sun exposure.

Can I get a knob that matches the original look of my dash, including labels and symbols?

Many of these knobs are designed to closely match the original factory appearance, including printed labels, icons, or symbols that indicate their function, such as fan speed or temperature. If matching the exact look of your existing dash is important, check the product images and description closely to confirm the labeling and finish align with your current setup.