Peterbilt 210 Headlight Bulb Size

Additional Notes

• The Peterbilt 210 for model years 2008-2009 accommodates three distinct headlamp configurations: a two-rectangular-headlamp setup, a four-rectangular-headlamp setup, and a halogen capsule headlamp setup. Each configuration requires a different bulb type, and substituting one for another is not supported by the specifications.
• The H6054 is a 5x7-inch rectangular sealed beam unit operating at 12V and conforming to ANSI standards applicable in both the United States and Canada. Because it is a sealed beam design, the entire unit is replaced rather than an internal bulb, and it serves both high beam and low beam functions in the two-rectangular-headlamp configuration.
• The 9004 is a dual-filament halogen bulb rated at 12V with a power draw of 65W on the high beam filament and 45W on the low beam filament. It uses a P29t base and also meets ANSI standards for the US and Canadian markets. A single 9004 bulb handles both beam functions in the halogen capsule headlamp configuration.
• The four-rectangular-headlamp configuration uses 4x6-inch sealed beam units, all operating at 12V under ANSI standards. Like the H6054, these are full-unit replacements rather than serviceable bulb types.
• Within the four-rectangular-headlamp configuration, the high beam and low beam positions are not interchangeable. The H4651 is specified for the high beam position in 2008-2009, while the low beam position uses the H4652 in 2009 and the H4656 in 2008, indicating that beam-specific variants must be matched to the correct housing position.
• The H4652 is described as a variant of the H4651, both being 4x6-inch sealed beam units. Despite their physical similarity, the specifications assign them to different beam functions, which reflects differences in internal reflector or filament geometry that determine beam pattern.
• The halogen capsule configuration is the only one among the three that uses a replaceable internal bulb. The sealed beam types, H6054, H4651, H4652, and H4656, require full assembly replacement, which is a servicing distinction relevant to parts procurement.
• All bulb types listed across both model years and all three configurations are rated at 12V, consistent with standard automotive electrical systems.