Spare Parts

Over 65,000 part numbers and reference numbers at our disposal


Over 45 years experience

Pumps &

Fully equipped in-house workshop

Injector & Glow Plug Removal

Full range of specialised and universal tools

Protection Caps

per page
Showing 1 - 15 of 38 items
Showing 1 - 15 of 38 items

Protection caps have been used in the Diesel trade for many years. After the injector, or pump has been fully reconditioned or in some cases replaced by a new part, dust caps have been fitted after test and/or repair to keep dust, dirt or any form of contamination out of the workings of the unit and to protect the threads.

Screw in and push in plugs, also push on caps and plugs available in metric and UNF sizes for injectors and pumps

If you can't find the correct size of protection cap or plug that you require, then please get in touch and our team will help you find what you need.

Can't find what you are looking for?

Please try searching our database using the search below

Still not found what you are looking for?

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

Please contact me

Special Offer!

10mm multi-fuel injection hose

View Offer


Darwen Diesels / Firad Heavy Duty Machines catalogue

Click here to view

Featured Products