SPELAB Coolant Bypass Kit For 2003-2018 Dodge Ram 6.7L/5.9L Diesel

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.

• 2003-2007 Dodge Ram 5.9L Diesel (Only Manual Transmission)
• 2007.5-2018 Dodge Ram 6.7L Diesel (Manual & Automatic Transmissions)