Grand Caravan V6-4.0L (2008)
Valve: Description and Operation
Description
DESCRIPTION
Valves are made of highly heat-resistant steel and are chrome plated to prevent stem scuffing. The intake valve is a one-piece forging, while the exhaust
valve has a forged head with a welded stem for lock groove durability. The four valves (two intake and two exhaust) employ a three-groove lock design
to help facilitate valve rotation.