This manual is essential for anyone who owns a Cummins engine. It contains valuable information on maintenance, repair, and specification of diesel engines. The bulletin number for this manual is 4021427, and it is made for the ISC, ISC, and ISL models.

The manual is made in the United States and covers everything needed to keep your engine running smoothly. Whether you are a professional mechanic or a Cummins engine enthusiast, this manual is a must-have. Get your hands on this comprehensive manual today and keep your engine in top-notch condition.