Do CAT electronic unit injectors need configuration?

Yes. The injector trim code must be uploaded to the engine control module so cylinder fuelling stays synchronised.

What certificate does a turbocharger cartridge need?

A dynamic balancing certificate, because it is a high-speed rotating assembly.

Which CAT engine is most common offshore?

The 3512B, widely used in offshore workboat propulsion and generator plants.

Caterpillar Marine Spares

also known as CAT, Caterpillar Marine

Caterpillar dominates the medium- and high-speed marine market for auxiliary generator sets and workboat propulsion, with the 3500 series — and the 3512B in particular — installed across offshore vessels, tugs and standby power plants. Because these engines run hard duty cycles, their wear parts are a steady sourcing line: electronic unit injectors, turbocharger cartridges, cylinder head seal groups, water pump seal groups and crankshaft dampers. Caterpillar identifies spares by part group, and several components carry digital configuration requirements — a replacement electronic unit injector must have its trim code uploaded to the engine control module so that cylinder fuelling stays synchronised. Turbocharger cartridges require dynamic balancing certificates, and head gaskets must be the correct multi-layer steel build for the engine's peak firing pressure. This hub indexes the high-demand Caterpillar marine spares with their part groups and the configuration cautions that govern a correct fit.

3500-series gensets and propulsion

The 3512B and its 3500-series siblings power offshore workboats and ship generator plants. Unit injectors, turbocharger cartridges and seal groups are the highest-frequency wear items.

Configuration and certification

Electronic unit injectors require a trim code upload to the engine control module after fitting. Turbocharger cartridges need dynamic balancing certificates, and cylinder head gaskets must match the engine's peak combustion pressure.

Series & families

Caterpillar 3512B marine engine spares

Compliance

Frequently asked questions

Do CAT electronic unit injectors need configuration?: Yes. The injector trim code must be uploaded to the engine control module so cylinder fuelling stays synchronised.
What certificate does a turbocharger cartridge need?: A dynamic balancing certificate, because it is a high-speed rotating assembly.
Which CAT engine is most common offshore?: The 3512B, widely used in offshore workboat propulsion and generator plants.