We sell Cat C3.3 Engine with part number or Arrangement number 345-3550.
We supply genuine OEM surplus new and rebuilt Caterpillar C3.3B common rail industrial diesel engines for Caterpillar compact equipment applications requiring ARR#345-3550 common rail fuel injection configuration compatibility. The Cat C3.3B common rail injection engine is a compact 4-cylinder diesel platform used in Caterpillar compact equipment where low-speed torque, hydraulic performance, cooling efficiency and dependable jobsite operation are important.
Technical notes: Cat C3.3B platform; 4-cylinder industrial diesel; approximately 3.3L displacement; bore about 94 mm and stroke about 120 mm; liquid-cooled; electronically controlled high-pressure common rail fuel injection system; Tier 4 Final emissions platform; common rail and direct injection / DIT variants may differ depending on arrangement number and emissions package.
The Cat C3.3B common rail fuel injection system differs from older direct injection (DI/DIT) Caterpillar engine configurations because the common rail platform uses electronically controlled high-pressure fuel delivery with ECU-managed injection timing and fuel-pressure control. Common rail systems are commonly used in Tier 4 Final Caterpillar compact equipment applications requiring lower emissions, smoother throttle response, improved cold starting characteristics and more precise fuel delivery under varying hydraulic loads.
For this Caterpillar compact equipment application, final fitment should be verified against engine arrangement number, serial prefix, ECU calibration, emissions equipment, flywheel housing, mounting points, manifold layout, cooling package, sensors, accessory drive and machine-side external components before installation.
Common machine applications that use the Cat C3.3B common rail injection engine include CAT 236D, CAT 236D3, CAT 242D, CAT 242D3, CAT 246D, CAT 246D3, CAT 257D, CAT 257D3, CAT 259D, CAT 259D3, CAT 262D, CAT 262D3, CAT 277D, CAT 279D, CAT 279D3, CAT 287D, CAT 289D, CAT 289D3, CAT 297D, CAT 297D2, CAT 308 CR, CAT 308E2 CR, CAT 309 CR, CAT 305 CR, CAT 305E2 and CAT 303 CR compact equipment applications. Final compatibility should always be verified by serial prefix, arrangement number, ECU calibration, emissions configuration, flywheel housing, manifolds, cooling package, mounts and accessory-drive layout.
Why our engines are different: unlike many rebuilt-only suppliers, we primarily supply genuine OEM surplus new Caterpillar C3.3B engines when available, often at pricing comparable to rebuilt/reman engines. New surplus engines can provide strong value because the core engine assembly has not gone through a used-engine rebuild cycle; however, external components may need to be swapped from the original machine depending on the application.