When doing replacement or upgrading on 1976 – 1979 Buick Opel, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

• Buick Opel Bulb Size Guide

1976 – 1979 Buick Opel Bulb Size Guide
High Beam and Low Beam Headlight	1976 – 1978	6014
	1979	H6054
Brake	1976 – 1979	1157
Dome Light	1976 – 1978	57
	1979	67
Front Side Marker	1976 – 1979	67
Front Turn Signal	1976 – 1979	1157
License Plate	1979	53
	1976 – 1978	67
Parking Light	1976 – 1979	1157
Rear Side Marker	1976 – 1979	67
Rear Turn Signal	1976 – 1979	1157
Tail Light	1976 – 1979	1157