Coolant Reservoir Tank

What Problem Does Our Coolant Reservoirs Solve?

Eliminate Plastic Failures for Good. Cracked factory coolant reservoirs are one of the most common causes of sudden overheating in both diesel trucks and performance cars. SPELAB Aluminum Coolant Reservoir Tanks are engineered as a permanent, leak-proof upgrade—replacing brittle OEM plastic with TIG-welded, aircraft-grade aluminum. Whether you drive a Ford Powerstroke, Dodge Ram Cummins, Duramax, or a performance platform like the WRX or Mustang, our tanks deliver superior heat resistance, OEM-level fitment, and a clean engine bay finish.

Why Aluminum Coolant Reservoirs Are a Critical Upgrade

Most factory coolant reservoirs—also known as degas bottles or overflow tanks—are molded from plastic. After years of exposure to heat cycles, pressure, and vibration, these tanks become brittle, discolored, and prone to cracking or leaking. This is especially common on diesel platforms such as the Ford 6.0L and 6.4L Powerstroke, where a failed degas bottle can quickly lead to coolant loss, overheating, and severe engine damage.

SPELAB aluminum coolant tanks are designed to permanently eliminate this weak point. Aluminum does not suffer from heat-induced embrittlement, can withstand higher system pressure, and dissipates heat more effectively than plastic—helping stabilize cooling performance under towing, high-load, or track-driven conditions.

Engineering Features & Design Advantages

• TIG-Welded Aluminum Construction: Each tank is hand-fabricated with precision TIG welds to ensure structural integrity and long-term leak resistance under high temperature and pressure.
• High-Temperature & Pressure Resistance: Built to survive extreme heat cycles, boost pressure, and towing loads without warping or cracking.
• Easy Coolant Level Monitoring: Many models include a built-in sight glass or external level tube, allowing quick visual checks without opening the cap or risking burns.
• OEM Direct-Fit Design: Tanks are reverse-engineered using 3D scanning to align precisely with factory mounting points—no drilling, cutting, or custom brackets required.
• Clean Engine Bay Appearance: Available in finishes such as polished aluminum or textured black to complement both stock and modified engine bays.

Vehicle Compatibility & Applications

SPELAB specializes in aluminum coolant reservoir solutions for both heavy-duty diesel trucks and high-performance vehicles:

• Ford Powerstroke Diesel: Upgraded degas bottles for F-250, F-350, F-450, and F-550 trucks equipped with 6.0L, 6.4L, and 6.7L engines (2003–2019+). A proven fix for coolant loss and the well-known “puking coolant” issue.
• Dodge Ram Cummins: Heavy-duty aluminum reservoirs for 6.7L Cummins trucks (2013–2024), engineered to handle sustained towing heat and diesel vibration.
• Chevy / GMC Duramax: Direct-fit replacements for 6.6L Duramax platforms (LB7, LLY, LBZ, LMM, LML) in Silverado and Sierra HD trucks.
• Performance & Track Cars: High-flow overflow tanks for Subaru WRX / STI, Honda Civic Type R, Ford Mustang, Toyota 86 / Subaru BRZ, and other performance platforms.

Installation Overview (DIY-Friendly)

Installing a SPELAB aluminum coolant reservoir is a straightforward bolt-on upgrade. Most installations can be completed in 30–60 minutes using basic hand tools.

1. Cool Down: Allow the engine to cool completely before starting.
2. Remove OEM Tank: Disconnect hoses and unbolt the factory plastic reservoir.
3. Install SPELAB Tank: Mount the aluminum reservoir using the factory mounting points.
4. Reconnect & Refill: Reattach hoses and refill with manufacturer-recommended coolant.
5. Bleed the System: Run the engine and bleed air from the cooling system as required.

Spelab Coolant Reservoir Tank Fitment Guide