Mishimoto Aluminum Coolant Reservoir Tank

11-24 300 / Challenger / Charger

MMRT-MOP-11EN

The Mishimoto Aluminum Coolant Reservoir Tank replaces the fragile stock plastic tank with a durable, fully welded aluminum design. Engineered for repeated temperature changes, the tank enhances under-hood appearance while improving cooling system reliability. Internal baffles retain coolant near the overflow port during aggressive driving, preventing air from entering the system. A cold-fill line is integrated into the internal baffling, maintaining a clean exterior without requiring a sight glass. The tank is available in micro-wrinkle black or natural aluminum finish, with the natural finish suitable for customization via powder coating, anodizing, or hydro dipping. Designed as a direct-fit replacement, it works with the stock expansion tank cap and includes Mishimoto’s Lifetime Warranty for long-lasting performance.

• Direct-fit replacement for vehicle
• 100% TIG-welded aluminum construction for superior durability
• Internal baffles prevent air entry during aggressive driving
• Cold-fill line integrated into internal design for clean exterior
• Fits with stock expansion tank cap
• Available in micro-wrinkle black or natural finish
• Natural finish customizable via powder coating, anodizing, or hydro dipping
• Resistant to cracking, warping, and heat degradation
• Mishimoto Lifetime Warranty included

Mishimoto is a performance cooling brand offering aluminum radiators, intercoolers, oil coolers, hoses, and supporting hardware built to manage heat on hard-driven street and track vehicles. For boosted setups and towing/off-road rigs alike, Mishimoto upgrades are designed to increase cooling capacity and reliability where factory systems can become a limitation.