Undercarriage Front Idler 277-8668 277-8667 Fit Caterpillar Excavator CAT 308C 307B 307C 307D 307E

Product Name: Front Idler
Reference Part Number: 277-8667, 277-8668
Compatible Machine: Caterpillar Excavator CAT 308C 307B 307C 307D 307E…

Description:
Idlers guide the track in and out of the track rollers. They intermittently support the machine’s weight and provide a way to control track slack and tension.