Optimize the cooling system of your Caterpillar 3406E 40 Pin ECM engine with the Kustom Truck Stainless Braided Hose Kit, specifically designed for early model engines with 5EK, 6TS, 1LW, or 5DS serial prefixes. This kit enhances coolant distribution by supplying additional coolant directly to cylinders #5 and #6 from the rear water bonnet, complementing the standard coolant flow to cylinder #4. By improving coolant delivery to the rear cylinders, this kit helps maintain more consistent engine temperatures, enhancing performance and longevity. Crafted from high-quality stainless braided hoses, the kit includes two coolant supply lines (Rear Water Bonnet to #5 and #6 Cylinders) and stainless steel fittings for secure, leak-free connections. The stainless braided hoses offer superior durability, high temperature resistance, and a sleek, mirror-polished finish that elevates your engine bay’s aesthetics. Ideal for mechanics, fleet owners, and truck enthusiasts upgrading Peterbilt, Kenworth, or Freightliner trucks, this kit ensures reliable cooling performance. Note: Compatible only with specified serial prefixes and not suitable for engines with a low-mount exhaust manifold due to insufficient clearance near the turbo hot housing. Confirm fitment with your specific engine configuration by contacting Kustom Truck for verification. Enhance your engine’s cooling efficiency with this precision-engineered hose kit, crafted for quality, performance, and style.
Kit Includes:
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(1) Coolant Supply Line (Rear Water Bonnet to #5 Cylinder)
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(1) Coolant Supply Line (Rear Water Bonnet to #6 Cylinder)
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(3) Stainless Steel Fittings (1/2" NPT x 1/2" Male JIC, 90 Degree)
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(1) Stainless Steel Fitting (1/2" NPT x 1/2" Male JIC, 45 Degree)
Key Features:
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Stainless braided hose kit for Caterpillar 3406E 40 Pin ECM engines (5EK, 6TS, 1LW, 5DS prefixes)
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Supplies additional coolant to cylinders #5 and #6 for improved temperature consistency
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Stainless braided hoses provide durability, high temperature resistance, and enhanced coolant flow
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Mirror-polished finish enhances engine bay aesthetics
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Not compatible with low-mount exhaust manifolds due to turbo housing clearance
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Note: Confirm engine serial prefix and manifold compatibility with Kustom Truck
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Engineered for precise fitment, efficient cooling, and heavy-duty performance
Elevate your Caterpillar 3406E’s cooling system with Kustom Truck Parts’ Stainless Braided Hose Kit, crafted for durability, performance, and style.
1 Year
1 Review Hide Reviews Show Reviews
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Engine coolant Lines
Awesome quality and measurements are spot on would recommend to anyone who asked and I will purchase this product again
