---tab Description--- The Coolant Bypass Kit is essential for Dodge Ram 5.9L/6.7L diesel as it addresses the factory design flaw of insufficient coolant flow to rear cylinders. Without this modification, the restricted coolant circulation causes dangerous localized overheating, excessive pressure buildup, and ultimately leads to catastrophic failures like blown freeze plugs or permanent engine damage - issues commonly reported in unmodified diesel engines. Key Features Solves Overheating Issues: Specifically designed for 2003-2018 Dodge Ram 5.9L/6.7L diesel engines to improve coolant flow to rear cylinders, reducing excessive heat buildup and preventing blown freeze plugs or engine damage. Enhances Engine Reliability: Balances temperatures across all six cylinders, minimizing thermal stress and extending engine life—prevents scored rear cylinders and catastrophic failures. Leak-Proof, High-Quality Components: Includes braided stainless steel hoses and AN O-ring fittings for a secure, high-pressure-resistant installation. Smart Temperature-Controlled Design (Superior to Competitors): Features a temperature-activated secondary thermostat (not pressure-based), proactively regulating coolant flow before overheating occurs. Benefits Reduces rear cylinder temps, ensuring balanced engine performance Prevents blown freeze plugs, scored cylinders, and engine failure Durable construction for long-term reliability Backed by a 12-month warranty Installation Coolant Bypass Kit For 2003-2018 Dodge Ram 6.7L/5.9L Diesel Intake Manifold Details Unique Design Allows Better Installation Of The Intake Manifold. ---tab Fitment--- 2003-2007 Dodge Ram 5.9L Diesel (Only Manual Transmission) 2007.5-2018 Dodge Ram 6.7L Diesel (Manual & Automatic Transmissions) ---tab Shipping & Returns--- Fast Shipping Policy Your order will be dispatched within 1-2 business days, and the package will arrive within your order's estimated date. Click for Shipping Policy Easy Return Policy Every order comes with a 14-day free return, which means you don't have to pay for a return slip. Click for Return Policy