Cummins ISB 4.5 Parts - Injector Section Loading... 1 Cummins Injector kit - for B series engines For engines with the following CPL numbers: 742, 953, 1685 Price: $ 229.12 Qty: ^ Details In Stock Add to Cart 2 Cummins Fuel Manifold for 4B and 4BT 3.9 Engines . Price: $ 75.62 Qty: ^ Pictures In Stock Add to Cart