Peterbilt 379 Turn Signal Bulb Size
The Peterbilt 379 front and rear turn signal bulbs utilize a 2057 or 198 size specification for replacement applications. The replacement chart covers vehicle production spanning 1986 to 2007 with corresponding bulb size data.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
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Front Turn Signal
Years Bulb Size
1998-2007 2057 1995-1997 2057 198 (With 4 Rectangular Headlamps) 1994 2057 1993 2057 198 (With Halogen Capsule Headlamps) 1992 2057 198 (With 4 Rectangular Headlamps) 1991 2057 1990 2057 198 (With 4 Rectangular Headlamps) 1989 2057 198 (With 4 Round Headlamps) 1988 198 2057 (With Halogen Capsule Headlamps) 1987 2057 198 (With Halogen Capsule Headlamps) 1986 2057 198 (With 4 Rectangular Headlamps)
Rear Turn Signal
Years Bulb Size
1998-2007 2057 1997 2057 198 (With Halogen Capsule Headlamps) 1993-1996 2057 1992 2057 198 (With Halogen Capsule Headlamps) 1991 2057 1990 2057 198 (With 4 Round Headlamps) 1989 2057 198 (With Halogen Capsule Headlamps) 1988 2057 1987 2057 198 (With 4 Round Headlamps) 1986 2057 198 (With 4 Rectangular Headlamps)
Bulb Specifications
Description
Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Brighter variant of 1157. 12V, 26.9W/8W. 2057 ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W. 198