1988-1991 GMC S15 Jimmy 4.3L. 1 X Aluminum Shroud. 1988-1990 GMC S15 4.3L. 1988-1994 Chevrolet S10 Blazer 4.3L. 1988-1993 Chevrolet S10 4.3L. 1991-1993 GMC Sonoma 4.3L. 1992-1994 GMC Jimmy 4.3L. The fan shroud basically houses the fan blades securing it in place and keeping it from damaging the other engine components that may disturb the smooth and even operation of the engine.
