Peterbilt 379 Back Up Light Bulb Size

The Peterbilt 379 back up light utilizes 1156 and P21W bulb sizes for illumination across various configurations. Provided information covers a span of time starting in 1986 and ending in 2007.

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

YearsUS TypeEU TypeShop
1997-20071156P21WCheck Price
19961156P21WCheck Price
1156 (With 4 Round Headlamps)P21WCheck Price
19951156P21WCheck Price
1156 (With 4 Rectangular Headlamps)P21WCheck Price
19941156P21WCheck Price
1156 (With 4 Round Headlamps)P21WCheck Price
19931156P21WCheck Price
19921156P21WCheck Price
1156 (With Halogen Capsule Headlamps)P21WCheck Price
1990-19911156P21WCheck Price
19891156P21WCheck Price
1156 (With Halogen Capsule Headlamps)P21WCheck Price
1987-19881156P21WCheck Price
19861156P21WCheck Price
1156 (With 4 Rectangular Headlamps)P21WCheck Price

Bulb Specifications

Description Type Shop
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.1156Check Price
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.P21WCheck Price

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