The NP241 transfer case was used in a variety of vehicles including the Chevrolet S-10 Blazer, GMC Jimmy, Oldsmobile Bravada and Isuzu Trooper II. It was also used in some Dodge trucks and SUVs including the Dakota, Durango and Ramcharger. The NP241 is an aluminum case with a chain-driven transfer case. It features two speed ranges: high and low. The low range is typically used for off-road driving or towing while the high range is for normal driving conditions. There are two versions of the NP241: theNP241C which has a center differential and the NP241D which does not have a center differential.