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Showing 1 - 15 of 44 items

Darwen Diesels stock a vast range of shims.

Shims are used for changing performance parameters on injectors. Shims vary in thickness from 1 micron which is .001mm.

Diesel fuel injectors vary significantly depending on the manufacturer of the injector and the application. For example, one Bosch injector can have up to 7 types of adjustment which require 7 different shapes or sizes of shim.

With Delphi there is a button – rather than a shim – ranging from 3mm to 4.9mm. The increments are .05mm between each one.

With Denso there are 5 shims each affecting different performance characteristics of the injector such as start of injection, ball cup movement, and armature tension.

With Siemens there are 3 shims and 1 button which include an actuator shim, start of injection and maximum fuel delivery.

For more details of our range and applications, please contacts us on 01254 53545. We can also send you a catalogue with more details.

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Call Darwen Diesels on +44 (0)1254 53545

We can source virtually any diesel part!

Or send us a message via our contact form and we will get back to you

  • We hold vast stocks of OE and quality replacement parts
  • We can source virtually any diesel part
  • The largest UK independent distributor of Diesel Fuel Injection components
  • We export our products to worldwide destinations
  • Next day delivery

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Special Offer!


10mm reinforced rubber fuel injection hose

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Darwen Diesels / Firad Heavy Duty Machines catalogue

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