SunCoast Guardian Series Allison Transmission | 2001-2019 GM Duramax 6.6L

When functionality is your primary concern, reliability matters. Our Guardian series of transmissions was specifically engineered to maintain OE standards in regards to NVH (noise vibration harmonics) factors. What you will find is a product that will function at the highest level but also offers the refinement that you demand.

The SunCoast Guardian Heavy Duty (HD) line of Allison transmissions is a specialty line designed around the stress and rigors demanded with heavy duty towing, hauling and work applications.

Every aspect of the Guardian HD transmission line is strategically engineered and designed around functionality, reliability, and strength in the light, medium and heavy duty towing applications. This Guardian HD series of transmissions is built to perform in tough conditions, day in and day out, and is designed for use in heavy duty industrial, or commercial operations.

Some of the key features of this new Allison Guardian line of heavy duty transmissions are custom clutch packs, steels, and billet plates. They also include our SunCoast custom overhaul kit, valve body calibration kit, gasket kit, pan filter, spin-on filter, pan gasket, filter loc and a new internal wiring harness.

Features

• SunCoast Custom Clutch Packs
• SunCoast Custom Steels
• SunCoast Custom Billet Plates
• SunCoast Custom Overhaul Kit
• Valve Body Calibration Kit
• SunCoast Gasket Kit
• New Internal Wiring Harness
• Pan Filter
• Spin-on Filter
• Pan Gasket
• SunCoast Filter Loc
• Factory Deep Pan