Magneti Marelli
The C635 DDCT is a six-speed, dual-dry-clutch automatic transmission developed jointly by Fiat Powertrain Technologies (FPT), Magneti Marelli and BorgWarner, and is manufactured by FPT at the Verrone, Italy plant. The transmission utilizes a control system produced by Magneti Marelli which integrates BorgWarner's hydraulic actuation module into its own power and transmission control units. It is marketed variously under the trade names "TCT" - "Twin Clutch Transmission" (Alfa Romeo), "Euro Twin Clutch Transmission" (Fiat USA), and "Dual-Dry-Clutch Auto Transmission" (Dodge).