Peterbilt 372 Courtesy Bulb Size

The Peterbilt 372 courtesy light utilizes 1141, P21W, 1004, and 906 bulb sizes according to the provided specifications. Available information covers the time range from 1989 through 1995.

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

Bulb Size by Year Range

YearsBulb Size
19951141
1994P21W
1004 (With 4 Round Headlamps)
19931141
19921004 (With 4 Rectangular Headlamps)
1141 (With 4 Round Headlamps)
P21W (With Halogen Capsule Headlamps)
19911141
906 (With 4 Round Headlamps)
1989-19901141

Bulb Specifications

Description Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.1141
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.P21W
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.1004
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W.906

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