Chevrolet Bel Air Turn Signal Indicator Bulb Size

Additional Notes

• The Chevrolet Bel Air turn signal indicator uses the 194 bulb across the longest continuous span in these specifications, covering 1968-1975. It is an ANSI-standard miniature wedge bulb in the T10 form factor, rated at 12V and 3.78W, making it the highest-wattage bulb among all types listed for this application.
• The 1895 and 1896 bulbs share identical electrical ratings of 12V and 0.9W and both use the T5 miniature wedge form factor, yet they carry different ANSI designations. The 1895 was used in 1966-1967, while the 1896 was used in 1953-1954. Despite their technical similarities, these two designations are not confirmed as interchangeable within these specifications.
• The 1445 and 53 bulbs are both single-filament types with a BA9s base, both rated at 12V and 2W. The 1445 was fitted to the Bel Air in 1964-1965, while the 53 was used in 1955-1957. Their shared electrical and base specifications may suggest physical compatibility, though the specifications do not confirm interchangeability.
• The 257 bulb, used in 1960-1963, is noted as accepting either a festoon or BA9s base configuration. At 12V and 2W, its electrical rating matches the 1445 and 53 bulbs, though its dual-base designation sets it apart in terms of physical fitment.
• The 57 bulb, fitted in 1958-1959, is a single-filament BA9s-base type rated at 12V and 1W. It is the lowest-wattage bulb in the BA9s group represented in these specifications, distinguishing it from the otherwise similar 1445, 53, and 257 types used in adjacent model years.
• All bulb types listed across the full 1953-1975 span of these specifications conform to ANSI standards applicable in both the United States and Canada, indicating consistent regulatory compliance across the entire production range covered.