EGR Cooler or head gaskets. My old 6.7 Cummins would blow coolant from the rad cap only under boost. Had a cracked gasket letting combustion gases enter the cooling system.
Pros: coolant blow under boost
Cons: cracked gasket
Reviews of Cummins head gasket
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4 votes
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1 review
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What we know about Cummins head gasket
The brand is registered in USA.
In March 2026, PartReview does not yet have a formed opinion of Cummins head gasket. This part is not in the ranking due to insufficient reviews. You can help by adding a review for Cummins head gasket.
Currently there are 1 review and 4 votes. Average rating — 3 out of 5. Vote balance: 2 up, 2 down.
Users also evaluated the qualities of Cummins head gasket:
- Overheating - the temperature gauge climbs and fluctuates - rated positively. 5 points out of 5.
- White smoke - thick white steam from the exhaust, especially when cold - no rating yet
- Milky residue - light-colored sludge under the oil cap - no rating yet
Head gasket Cummins in car-specific ratings
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