Supertech Viton valve stem seals for Toyota Yaris and Echo with the 4A-GE 20V engine are supplied as a set of eight and sized for 5mm valve stems. These intake and exhaust seals use Viton elastomer to resist oil and heat at the valve guide interface, making them suitable for engine service and rebuilds on the cited 4A-GE 20-valve applications.
Supertech Toyota Yaris / Echo 4AGE 20V 5mm Viton Exhaust / Intake Valve Stem Seal - Set of 8