Overview
The Mishimoto MRAD-DMAX-06 is a direct-fit performance aluminum radiator for the 6.6L Duramax, fitting 2006 to 2010 Chevrolet and GMC trucks. It retains factory fitment and needs no modification to the truck.
The radiator has a 100% brazed aluminum core and polished end tanks made from aircraft-grade aluminum. Its all-aluminum TIG-welded construction is built to handle rough use, from drag strip runs to job site work, and it is designed to improve cooling efficiency.
Key features
- Direct fit for the 6.6L Duramax LBZ and LMM engines, retaining factory fitment
- Aircraft-grade aluminum end tanks
- Core is 100% brazed aluminum and 2.21 inch thick
- TIG-welded all-aluminum construction
- CNC-machined quick disconnect outlet
- Magnetic drain plug included
- Mishimoto lifetime warranty
Hoses and related parts
A factory-fit radiator works with the rest of the Duramax cooling system, so hoses, the coolant and the cap are worth reviewing during the swap. Older hoses can soften and collapse under the pressure of a working engine. Replacing them while the old unit is out avoids a second drain and fill.
Duramax engines in heavy use benefit from a clean, well-sealed cooling loop. Inspect the radiator cap, the overflow line and the fan shroud, and check that the fan clears the new core at full movement. Coolant that matches the engine’s requirements keeps corrosion down. After the first drive, check for leaks and top up coolant once the engine is cool.
- Replace worn hoses during the swap
- Inspect the radiator cap seal
- Check fan clearance at full travel
Specifications
| Brand | Mishimoto |
|---|---|
| Part number | MRAD-DMAX-06 |
| UPC | 748666005013 |
| Engine | 6.6L Duramax LBZ and LMM |
| Core | 100% brazed aluminum, 2.21 inch thick |
| Construction | TIG-welded aluminum |
| End tanks | Polished aluminum |
| Outlet | CNC-machined quick disconnect |
| Included | Magnetic drain plug |
| Warranty | Mishimoto lifetime warranty |
Vehicle fitment
It is a direct fit for 2006 to 2010 Chevrolet and GMC trucks with the 6.6L Duramax engine. Confirm fit for your truck’s year, model and trim before ordering.
It is made for the LBZ and LMM Duramax engines. Confirm your vehicle’s year, model and trim before ordering, especially for other Duramax generations.
Installation notes
The radiator uses the original mounting, so no cutting or modification is needed. Use the magnetic drain plug when draining coolant, and let the engine cool completely before opening any cooling system lines. A silicone coolant hose kit is a good pairing for this radiator.
What’s included
The radiator, with a magnetic drain plug and the Mishimoto lifetime warranty.
Not included: Coolant and a silicone coolant hose kit are separate purchases, so check your hoses before installation.
