Fuel Injection - CAT 3600

Caterpillar 3600 Fuel Injector Spares

We offer a range of quality aftermarket spare parts to enable servicing of Caterpillar 3600 series fuel injectors.

Our parts range enables proper overhauling of injectors without compromise of quality and at a significant cost advantage to the engine manufacturer’s reman exchange scheme.



Our injector spares programme includes nozzles, plunger & barrels, springs and seal kits, covering all mechanical unit injectors (MUI) fitted to Caterpillar engine models 3606, 3608, 3612 and 3616. Parts are available for both distillate and heavy fuel applications.


All the parts supplied have been manufactured to the latest design and specification. Advanced manufacturing techniques and high quality materials are exclusively used to ensure excellent performance and long service life. For additional reassurance, all parts and services that we provide are covered by a comprehensive product liability insurance policy.

Caterpillar 3600 Fuel Injector

Caterpillar 3600 Fuel Injector



In addition to direct cost savings, having the parts and knowledge to service your own injectors has several other benefits: Inspection and testing of injectors can help to maximise in-service times, fault diagnosis is aided, minor faults such as broken nozzle springs can be rectified at minimal cost, shipping costs are reduced (particularly when engines are in remote locations) and, for a relatively small investment, spares can be held in stock, minimising down time.

Caterpillar 3600 Plunger & Barrel

Caterpillar 3600 Plunger & Barrel

Product Support

The overhaul of Caterpillar 3600 unit injectors is no more complicated than for traditional fuel injection pumps & injectors. However, as with all repair procedures, information and initial guidance on the specifics of these injectors can be very helpful.
We can provide technical advice and information for owners / operators wanting to overhaul their own injectors and are happy to assist with any questions that you may have.

We also supply a complete range of fuel injection test equipment and have developed an adaptor to allow CAT 3600 injector nozzles to be tested with a regular injector tester.
For workshops requiring a higher level of testing, we have solutions ranging from a specially designed Caterpillar injector nozzle tester to full dynamic testing of the complete injector using a pump test bench and cam box assembly.


Caterpillar 3600 Fuel Injector Overhaul

For customers with limited or no workshop facilities, we offer a complete overhaul and testing service.


The injector remanufacturing process

After initial recording of injector details and serial numbers, injectors are stripped. Housings and components are chemically cleaned and inspected. Wearing parts including nozzles and plunger & barrels are replaced as standard. Nozzle springs that often break in service are also 100% replaced with an improved design spring.

All other components are checked for wear and replaced as necessary.
Important dimensions such as nozzle needle lift are checked and rebuilt to original specifications.

Once reassembled with new seals, injectors are then dynamically tested
and calibrated to manufacturer’s specifications.

Caterpillar 3600 Fuel Injector Nozzle

Caterpillar 3600 Fuel Injector Nozzle


Contact Us

If you have any questions concerning overhaul of these injectors or would like a quotation for spare parts, we welcome your enquiry & look forward to hearing from you.

E-mail or contact form, Telephone + 44 1425 473 485

All manufacturers’ names, numbers, symbols and descriptions are for reference only. It is not implied that any part is the product of the manufacturer. Caterpillar ® and Cat® are registered trademarks of Caterpillar Inc.

Atlantic Diesel Services Ltd.
Unit 12
Hoburne Enterprise Park Embankment Way
Ringwood BH24 1W
United Kingdom
Tel: + 44(0)1202 676558 Mobile: + 44(0)7802 675000