Engines | Mounts, , (USED) 1997 Caterpilllar 3126 Diesel Engine (40PINECM), Serial # 0R3317, 300HP RATED, Test Run 6-10-15, 131K Miles, Fully Inspected!!!Runs Perfect!!! Visit JJREBUILDERS.COM for more information on this engine or any other diesel engine you may be looking for. Call 1-800-971-3019. INV # 002468