Coolant Overflow Tank

Features:

• Holds up to one gallon of coolant
• Durable hand-cut TIG welded aluminum
• Improves cooling system capacity
• Replaces factory plastic overflow tank
• Fits 2007.5-2010 GM 6.6L Duramax LMM
• Mounts in second battery location
• Uses factory bolt locations for mounting
• Compatible with PPE Battery Remount Tray
• Designed for Silverado and Sierra HD trucks

Better Cooling for Hard-Working Duramax Engines

If you push your LMM Duramax to work harder than stock, your factory plastic coolant tank might not be keeping up. The PPE Coolant Overflow Tank gives your 2007.5 to 2010 Silverado or Sierra HD the added capacity and durability it needs to handle serious loads, long pulls, and higher performance builds. This aluminum tank holds up to one gallon of coolant, giving your system more room to manage heat when things get demanding. Built from high-quality 6061 aluminum, each tank is hand-cut and TIG welded to ensure strength, reliability, and improved cooling properties. Plus, it replaces the fragile factory plastic tank, providing a more dependable solution that looks sharp under the hood.

Smart Fit and Easy Installation

Designed to install in the location of your second battery, this PPE overflow tank bolts right into the factory mounting points, making the install quick and hassle-free. No drilling or custom modifications are needed. For trucks running dual batteries, it pairs perfectly with PPE’s Battery Remount Tray, giving you the flexibility to relocate the battery while upgrading your cooling system at the same time. Whether you use your truck for daily driving, heavy towing, or performance applications, this overflow tank helps protect your engine from overheating and coolant loss. It’s a simple upgrade that makes a big impact on your truck’s long-term reliability.

Fits: 2007.5, 2008, 2009, 2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM