The Fleece FPE‑CLNTBYPS‑1318 Coolant Bypass Kit is designed for 2013–2018 Ram trucks equipped with the 6.7L Cummins Diesel engine, addressing a common cooling issue with the rear cylinders—where insufficient coolant flow leads to elevated temperatures and, in extreme cases, pressure-induced freeze plug failures.
This kit integrates seamlessly into your truck’s cooling system, offering an OEM-level fit and finish. It incorporates a secondary thermostat that activates based on coolant temperature—not pressure—ensuring balanced thermal control across all cylinders before dangerous pressure builds up.
Key Features:
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Prevents excessive coolant pressure buildup
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Lowers coolant temperature in the rear cylinders
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Maintains consistent temperatures across all six cylinders
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Includes braided hose and –AN O‑ring fittings for leak-free installation
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OE-style integration with the existing system
Included in the Kit:
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Mounting hardware
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New EGR crossover tube gaskets
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Rear coolant bypass thermostat housing
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Front coolant bypass thermostat housing
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Black braided nylon coolant bypass hose with protective sleeve and –AN fittings
Specifications
| Attribute | Details |
|---|---|
| Fitment | 2013–2018 Ram, 6.7L Cummins Diesel |
| MPN | FPE‑CLNTBYPS‑CUMMINS‑1318 |
| SKU | FPE‑CLNTBYPS‑CUMMINS‑1318 |
| GTIN | 670875718364 |
| Shipping Weight | 8 lb |
| Dimensions | ~16 in × 13 in × 3 in |
| Fuel Type | Diesel |
| E‑Code Rating | 3 |
| Warranty | 1‑Year Limited Manufacturer Warranty |
| Prop 65 Warning | Contains chemicals known to cause cancer & reproductive harm |