Mack RWL Engine Compartment Light Bulb Size

The Mack RWL engine compartment light uses a 912 bulb size for illumination within the engine bay area. The replacement chart covers vehicle production from 1981 to 1985 with corresponding bulb specifications.

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
1981-1985912W16WCheck Price

Bulb Specifications

Description Type Shop
ANSI standard (US & Canada). Wedge bulb (T15). Variant of 921. 12V, 12W.912Check Price

Other Locations