SPELAB Coolant Bypass Kit For 2003-2018 Dodge Ram 6.7L/5.9L Diesel
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- Ships from SPELAB
---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
---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
SPELAB Auto Parts: 1 year from delivery; supplier conditions apply. SPELAB offers a one-year limited warranty from delivery for material/workmanship defects under normal use, original purchaser only, with proof of purchase. Consumables, wear/cosmetic damage, improper installation, alteration, misuse and removal/installation labor are excluded. Approved remedies are repair, replacement or replacement parts at SPELAB’s discretion.
Return and warranty information is based on what SPELAB Auto Parts offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
SPELAB Auto Parts warranty policyView complete warrantyProduct conditions
Return and warranty information is based on what SPELAB Auto Parts offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
- Return eligibility
- SPELAB allows return requests within 30 days of delivery, with authorization and undamaged goods, original packaging and accessories. Tuners are final sale. Customer pays voluntary return shipping; original shipping is not refunded. SPELAB pays return shipping for approved damaged, incorrect or manufacturing-defective items. Transit damage must be reported within two business days and incorrect items within seven days. Based on what SPELAB Auto Parts offers.
- Return window
- Not stated for this product; see supplier terms
- Restocking fee
- See supplier terms; no product-specific fee stated
- Return shipping
- Based on the supplier’s return policy; see terms
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
- Warranty provider
- SPELAB Auto Parts
- Warranty duration
- 1 year from delivery; supplier conditions apply
- Compatibility
- Listed for specific vehicle configurations
- Legal use
- Street legal
- Processing estimate
- 3–10 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- No signature requirement
- Supplier
- SPELAB Auto Parts
Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.