Key Truck Parts and Their Functions Engine The heart of the truck, responsible for generating power. Includes components like the turbocharger, pistons, and fuel injectors, all of which need regular inspection to avoid costly breakdowns. Transmission System Transfers power from the engine to the wheels. Includes the gearbox, clutch, and driveshaft, critical for smooth gear s... https://smyperformance.com/smy-stealth-pillow-ball-cnc-aluminum-adjustable-rear-control-arms-2008-2023-wrx-sti.html