What Causes High EGT on a 6.7 Cummins & How to Fix It
Posted by Will on May 8, 2025
What Causes High EGT's on a 6.7 Cummins & How to Fix ItHigh exhaust gas temperatures (EGTs) can be a silent killer for your 6.7L Cummins engine. Whether you're towing heavy, daily driving, or running performance mods, keeping your EGTs in check is critical for engine longevity and power.In this post, we’ll break down:Normal EGT's for a 6.7 CumminsDriving TypeNormal EGT Range (°F)Idle300–500Highway Cruising600–900Towing / Heavy Load1000–1200Danger Zone (Sustained)1300+Tip: Anything over 1250°
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