Ram 1500 Classic Headlight Bulb Size

Ram 1500 Classic high beam headlight uses 3757NA or 9005 bulb size, while low beam headlight uses 3757NA, 9005, or H11 bulb size. The replacement chart covers 2019 to 2023 production years with corresponding bulb size specifications.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

High Beam Headlight

Years	US Type	EU Type	Shop
2023	3757NA	PY27/7W	Check Price
2023	9005	HB3	Check Price
2021	9005	HB3	Check Price
2019	9005	HB3	Check Price

Low Beam Headlight

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2023	3757NA	PY27/7W	Check Price
2023	9005	HB3	Check Price
2021	H11	H11	Check Price
2019	9005 (With Projector-type Headlamps)	HB3	Check Price
2019	H11 (Without Projector-Type Headlamps)	H11	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V.	3757NA	Check Price
ANSI standard (US & Canada). Single-filament halogen bulb with P20d base. 12V, 65W.	9005	Check Price
ECE standard (Europe & worldwide). Single-filament halogen bulb with PGJ19-2 base. Also approved in the US. 12V, 55W.	H11	Check Price

Other Locations

Additional Notes

The 9005 is the most frequently specified bulb across the Ram 1500 Classic headlight data, appearing in both high beam and low beam positions across multiple years. It follows the ANSI standard applicable to the US and Canada, operates at 12V, draws 65W, and uses a P20d base with a single filament.
The H11 is the second most recurring bulb in these specifications, also a single-filament halogen type but governed by the ECE standard used in Europe and worldwide, though it carries US approval as well. It operates at 12V and draws 55W through a PGJ19-2 base, making it electrically and physically distinct from the 9005 despite both being single-filament halogens.
The 3757NA is a dual-filament wedge bulb of the T25 type with natural amber glass, rated at 12V and conforming to the ANSI standard. Its dual-filament construction and amber coloring set it apart from the other bulbs listed, which are clear single-filament halogens.
The 9005 and H11 are not interchangeable. Their base types differ, with the 9005 using a P20d base and the H11 using a PGJ19-2 base, meaning neither will physically seat in the socket intended for the other.
The 2019 Ram 1500 Classic low beam fitment depends on headlamp assembly type. Vehicles with projector-type headlamps take a 9005, while those without projector-type headlamps take an H11, making headlamp assembly identification necessary before selecting a replacement bulb.
The 2023 Ram 1500 Classic lists both the 3757NA and the 9005 for the high beam position, indicating that two distinct headlamp configurations were available that year, each requiring a different bulb type.
The 2023 low beam position similarly lists both the 3757NA and the 9005, reflecting the same dual-configuration pattern seen in the high beam data for that year.
The 9005 carries a higher wattage rating of 65W compared to the H11 at 55W. In halogen bulbs, higher wattage generally corresponds to greater light output, though it also places a higher load on the vehicle's electrical circuit.