Peterbilt 378 Brake Bulb Size

The Peterbilt 378 brake component utilizes 2057 and 198 bulb sizes for illumination across various configurations. Available information spans a range from 1988 through 2007 for the specified vehicle components.

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
1997-20072057Check Price
1996198Check Price
2057 (With 4 Rectangular Headlamps)Check Price
19952057Check Price
198 (With Halogen Capsule Headlamps)Check Price
19942057Check Price
19932057Check Price
198 (With 4 Rectangular Headlamps)Check Price
1992198Check Price
2057 (With Halogen Capsule Headlamps)Check Price
19912057Check Price
198 (With Halogen Capsule Headlamps)Check Price
19902057Check Price
198 (With 4 Round Headlamps)Check Price
19892057Check Price
198 (With 4 Rectangular Headlamps)Check Price
19882057Check Price
198 (With Halogen Capsule 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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