DEI Turbo Shield T4 - Shield Only - Onyx Cooling>Thermostats now available with the latest

now available with the latest brushless-motor technology

this technology produces the highest available dB (decibel) levels in the BORLA® street-legal lineup

AN-10 10-micron microglass element

5” double-walled slash-cut tip set up

So when it comes to keeping your engine cool and your E39 M5/540i running at its best

DEI Turbo Shield T4 - Shield Only - Onyx Cooling>Thermostats now available with the latestTurbo Shields solve the problem of extreme underhood heat, stops heat damage of painted or carbon fiber hoods and helps turbos spool faster. DEI recognized the need for new Turbo Shield applications, and now offer Turbo Shields in the smaller turbo sizes. Unlike cheap, knock off copies, DEI Turbo Shields use an exclusive combination of premium heat resistant textiles and newly designed stainless steel attachment anchors. DEI Turbo Shields are used to