matachispas

matachispas is masculine in Spanish.

spark arrestor

“Entre las acciones realizadas, se incluye la revisión de los medios de transporte que tienen que entrar con regularidad a los macizos forestales, para verificar que posean matachispas.” — Among the actions carried out, the review of the means of transport that have to enter the forest massifs regularly is included, to verify that they have spark arrestors.

Verb-object compound, composed of mata (“to kill”) + chispas (“sparks”).