Heavy Equipment Parts & Access. Interior Parts & Accessories. Exterior Parts & Accessories. For Cummins Diesel Engine Air Brake Compressor 4930041. Q: What if the part number matches the product description but my car is not listed in the “Fit Car Model” list? We will use our Vehicle Configuration Database to verify whether the part fits your vehicle and help you find the correct one if needed. Q: What if my car matches the year, make, model, and engine code in the product description but doesn’t have a matching part number? We will check our Vehicle Configuration Database and inform you whether the part is compatible with your vehicle as soon as possible. Q: I don’t want the whole kit. We usually sell parts from the kit separately. If you can’t find them in our store, please provide your car model and the list of parts you need via Message, and we’ll send you the relevant link. We’ll do our best to resolve the issue. We have several warehouses in the United States. Not less than 30 days.