EGR cooler: To address the EGR cooler failures of the 6.0l, Navistar added a second cooler to spread out the thermal load. However, these coolers are still prone to cracking. Exhaust enters the horizontally-mounted cooler first, so it experiences more heat than the vertical cooler. As a result, the horizontal cooler tends to fail before the vertical cooler.
Crack For Sprint Layout 6.0l
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