1989–1993 5.9L Cummins Engines & Engine Parts

The 1989–1993 5.9L Cummins is the early 12-valve 6BT platform with mechanical Bosch VE fuel injection. Cummins notes that intercooling was introduced during the 1991 model year, so early and later first-generation trucks are not identical.

Industrial Injection's catalog for this year break includes gaskets, seals, valvetrain parts, pistons, rods, camshafts, cylinder-head components, studs and other 12-valve engine hardware. That gives you options ranging from individual repair parts to larger engine-build components. Do not assume every 5.9L or 6.7L internal part crosses between generations.

Verify the exact model year and, where relevant, whether the truck is intercooled or non-intercooled. For short blocks, long blocks, Builder Boxes and cylinder heads, also review the exact included components before ordering.

Related Cummins collections: Fuel Injectors & Components, Injection Pumps & Fuel Supply, Turbochargers & Turbo Parts.