Sinister Diesel Releases Coolant Reservoir for 2011-2015 Chevy Trucks

LML Coolant Reservoir

Sinister Diesel releases their new Coolant Reservoir (Degas Bottle) for the 2011-2015 Chevy LML Duramax truck. This component is made from 6061 aircraft grade aluminum which is TIG welded and pressure tested for maximum strength. This makes Sinister’s tank significantly stronger than factory tanks. Factory tanks are molded from two plastic pieces which are sealed together causing stress, cracking and leaking. In addition, aluminum dissipates heat in the coolant system better than plastic, improving performance and longevity.

The Coolant Reservoir also has 26% greater capacity than stock and features a sight glass for easy level inspection. It is a direct, bolt-in replacement for stock reservoirs and can be installed with basic tools in less than 30 minutes.

This Coolant Reservoir is manufactured at Sinister’s Sacramento facility and is powder coated Sinister Blue for added corrosion resistance and a custom look under the hood.

For details, call Sinister Diesel toll free at (888) 995-0766 or visit

See it here: Sinister Diesel Degas Bottle for 2011-2016 GM Duramax 6.6L LML