Freightliner SD 108-122 Gauges & Switches From high-accuracy digital thermometers and pressure gauges to backlit speedometers and turbocator kits, this product lineup offers a wide variety of premium-quality instrumentation for Freightliner SD 108-122 semi-trucks. Keep a close eye on crucial engine and vehicle metrics with reliable, easy-to-read gauges that provide clear, real-time data. Whether you need new temperature, fuel, or air pressure monitors, or want to upgrade your dash with more advanced digital displays, you'll find durable, long-lasting options designed to withstand the demands of heavy-duty trucking. These precision instruments give you the vital information you need to maintain optimal performance and safety on the road.