GMC W4500 Forward High Beam Indicator Bulb Size

The GMC W4500 Forward high beam indicator requires bulb sizes 158, 168, and PC74 depending on the specific version. Data for the listed components covers the range from 1992 through 1996.

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

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

YearsUS TypeEU TypeShop
1996158 (Tiltmaster)158Check Price
1995168 (Tiltmaster)W5WCheck Price
1993-1994PC74 (Tiltmaster)T5+PCBCheck Price
1992158 (Tiltmaster)158Check Price

Bulb Specifications

Description Type Shop
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W.158Check Price
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.168Check Price
ECE standard (Europe & worldwide). Single-filament signalling bulb with W2.1x9.5d wedge base. 12V, 5W.W5WCheck Price
ANSI standard (US & Canada). Miniature wedge bulb (T5) with printed circuit board twist-lock socket, for instrument clusters. 12V, 1.4W.PC74Check Price

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