Jeep Wrangler oil cooler replacement issue due to defective part on Jeep Wrangler

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Jeep Wrangler owners report experiencing oil cooler problems, including cracking and leaking oil, which necessitate replacement. These oil leaks may require the entire engine oil cooler assembly to be replaced. Additionally, some owners attribute oil cooler failures to issues like over-tightening, under-tightening, or incorrect installation of the oil filter during oil changes. The repair process can be complicated, often requiring the removal of multiple components, such as the upper and lower intake manifolds, to access the oil cooler and oil filter housing, which poses a risk of small parts falling into the cylinders. The cost for replacing an engine oil cooler typically ranges from $292 to $340 on average. In more severe cases, the oil cooler issues have led to significant consequences, including engine overheating, starter damage, and the need for radiator replacement. Furthermore, some owners have encountered challenges with parts availability, as dealerships report backorders for oil coolers, indicating a widespread issue with these components.

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