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(888) 312-8812 Login SignupThe Mack Exhaust Gas Recirculation (EGR) Cooler lowers exhaust gas temperature before that gas is routed back through the EGR system. In a working diesel engine, exhaust leaving the combustion side is too hot to send straight back into the intake path, so the cooler pulls that heat down before recirculation takes place. That temperature drop is a key part of how the EGR system operates, especially on engines that see long hours under load. The Mack 21301444 works like a heat exchanger within the emissions system, carrying hot exhaust through a controlled path before it returns to the engine.
| Brand | Part Number |
|---|---|
| PAI | 841970 |
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