Kenworth T680 Dash Knobs

Frequently Asked Questions About Kenworth T680 Dash Knobs

What are Kenworth T680 dash knobs used for?

Dash knobs are the control knobs mounted on the dashboard and instrument panel of your Kenworth T680. They are used to operate functions such as headlight switches, HVAC controls, dimmer switches, wiper controls, and other panel-mounted controls. Replacing a worn, cracked, or missing knob restores full function and a finished look to your dash.

Will these knobs fit my specific Kenworth T680 model year?

Dash knob designs can vary by model year and by which control they operate, so it is important to check the fitment details listed on each product page before ordering. If you are unsure whether a knob matches your truck's year or a specific switch, compare the shape, shaft size, and mounting style to your existing knob, or reach out to our team with your truck's model year for confirmation.

What materials and finishes are available for these knobs?

Dash knobs are typically available in durable plastic or chrome-finished options, depending on the style and function. Chrome knobs offer a polished, upgraded appearance that matches other chrome interior accents, while standard plastic knobs provide a factory-style look and feel. Choose based on whether you want to maintain an OEM appearance or add some extra shine to your cab.

How do I install a replacement dash knob?

Most dash knobs are designed for simple installation. In many cases, you can pull the old knob straight off the control shaft and press the new one on in its place. Some knobs may be secured with a small set screw or friction fit, so it helps to inspect your current knob's attachment method before purchasing a replacement. No special tools are typically required, but having a small screwdriver on hand can be useful if a set screw is involved.

Why does my dash knob feel loose, spin freely, or not grip the shaft?

A knob that spins without operating the control usually means the internal mounting point, whether a friction fit, splined shaft, or set screw, is worn out or mismatched with the knob. This is often a sign it is time for a replacement rather than a repair. When ordering a new knob, double check the shaft shape and size referenced in the product listing to ensure a secure, functional fit.