Peterbilt 378 Tail Light Bulb Size

The Peterbilt 378 tail light utilizes 2057 and 198 bulb sizes for the lighting components. Available information covers the range of 1988 through 2007 for the specified vehicle and lighting equipment.

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 TypeShop
1998-20072057Check Price
19972057Check Price
198 (With Halogen Capsule Headlamps)Check Price
19962057Check Price
19952057Check Price
198 (With 4 Round Headlamps)Check Price
1994198Check Price
2057 (With 4 Round Headlamps)Check Price
19932057Check Price
1991-19922057Check Price
198 (With Halogen Capsule Headlamps)Check Price
1990198Check Price
2057 (With 4 Round Headlamps)Check Price
1989198Check Price
2057 (With 4 Rectangular Headlamps)Check Price
19882057Check Price
198 (With 4 Round Headlamps)Check Price

Bulb Specifications

Description Type Shop
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Brighter variant of 1157. 12V, 26.9W/8W.2057Check Price
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W.198Check Price

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