Why You Need a New 12v Cummins Valve Cover Plate

If you're tired of seeing oil seeping out of your engine bay and making a mess of your driveway, upgrading to a better 12v cummins valve cover plate is probably the smartest move you can make this weekend. These old 5.9L engines are legendary for a reason—they basically run on spite and diesel—but they aren't exactly known for staying bone-dry. After twenty or thirty years of heat cycles, those stock covers start to show their age, and that's when the "Cummins drip" really starts to get annoying. ...

February 9, 2026 · 7 min · Kristie Mamula