Full Lock Main Diff Switch Guard The Rockwood Full Lock Main Differential Switch Guard is built from chrome plated stainless steel to protect the switch area while enhancing your interior with a polished finish. Featuring engraved “Full Lock Main Diff” labeling, this guard provides durability, clarity, and a refined look for your dash. Key Features Item Number: PA-302YMD Chrome plated stainless steel construction Engraved Full Lock Main Diff labeling Protects dash switch area from wear Polished finish for upgraded appearance Sold individually Manufactured by Rockwood Fitment Fits most 2001–2007 Peterbilt 370 Series Fits most 2006 and newer Peterbilt 365, 367, 384, 386, 388, and 389 Series Common Questions Is this stainless steel? Yes, it is chrome plated stainless steel. Is the engraving included? Yes, the label is fully engraved. Is this a replacement switch? No, it is a protective trim cover. Is it sold individually? Yes, one guard per order. ⚠️ California Proposition 65 Warning:This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.