Original OEM GM tail light lens marked Guide R2-55 — the correct factory tail light lens for the iconic 1955–1956 Pontiac full-size passenger cars. This is a genuine Guide-manufactured lens, not a reproduction. In excellent condition with no cracks — an increasingly rare find for these highly sought-after vehicles.

Part Info:

• Manufacturer: Guide (OEM GM lighting supplier)
• Lens Marking: Guide R2-55
• GM Part Reference: 5945748 / 5946382
• Condition: Used OEM original — No cracks, great condition
• Type: Tail light lens
• Fits left or right side

Why This Matters:
These original Guide lenses have not been reproduced — what you find on the used market is all that exists. Finding one with no cracks is genuinely difficult, as these lenses are over 70 years old and most surviving examples show crazing, chips, or stress cracks. A crack-free example like this is exactly what show judges and serious restorers demand.

Fitment — fits the following vehicles:

Pontiac (All except Station Wagon):

• Pontiac Chieftain — 1955, 1956
• Pontiac Catalina — 1955, 1956
• Pontiac Star Chief — 1955, 1956
• Pontiac Bonneville — 1955, 1956

Does NOT fit:

• 1955–1956 Pontiac Safari Station Wagon (uses a different lens — Guide R2A)