Specifications include, but are not limited to: Engine Rebuild 2014 New Flyer Low Floor Transit Bus with a Cummins ISL G. See Specifications Section 3 for additional information. Serial Number: 73671164 Vendors shall rebuild the engine replacement to original manufacturer specifications: Cummins ISL G Engine Includes in frame overhaul with all new pistons/liners, cylinder head, turbocharger, oil cooler, bearings, front main seal & cover, rod bolts, oil pump, water pump, t-stat, belt, fuel filters, air filter, engine oil, coolant, exhaust manifold studs/bolts, spark plugs, and coils. Engine Rebuild 2018 New Flyer Low Floor Transit Bus with a Cummins ISL G. See Specifications Section 3 for additional information. Serial Number: 74320523 Vendors shall rebuild the engine replacement to original manufacturer specifications: Cummins ISL G Engine Includes in frame overhaul with all new pistons/liners, cylinder head, turbocharger, oil cooler, bearings, front main seal & cover, rod bolts, oil pump, water pump, t-stat, belt, fuel filters, air filter, engine oil, coolant, exhaust manifold studs/bolts, spark plugs, and coils. Engine Rebuild 2019 New Flyer Low Floor Transit Bus with a Cummins ISL G. See Specifications Section 3 for additional information. Serial Number: 74617128 Vendors shall rebuild the engine replacement to original manufacturer specifications: Cummins ISL G Engine Includes in frame overhaul with all new pistons/liners, cylinder head, turbocharger, oil cooler, bearings, front main seal & cover, rod bolts, oil pump, water pump, t-stat, belt, fuel filters, air filter, engine oil, coolant, exhaust manifold studs/bolts, spark plugs, and coils.