Simms Diesel Fuel Injection Spare Parts

Within our vintage range of parts, we stock Simms diesel fuel injection spares.

Frederick Richard Simms was a mechanical engineer, inventor, businessman, and a pioneer in the motor industry.

Simms’s first major business venture was the Simms Manufacturing Company Ltd set up in 1903 in Kilburn, London. It was there that they made cars, lorries military vehicles and guns, marine engines, fire engines, agricultural vehicles, and aeronautical devices. He subsequently founded Simms Motor Units Ltd. to sell and repair components (particularly dynamos and magnetos).

However, it was during the 1930’s that a range of diesel fuel injectors was developed alongside Leyland Motors, and this collaboration produced the Uniflow injection pump in 1937. Parts produced by Simms went into the manufacture of many vehicles, particularly for the second World War and subsequently. Simms parts were used extensively in agricultural machinery, including tractors, in post war Britain which was a time of expansion for the company.

Simms Motor Units was taken over by Lucas CAV in 1968.

We have a comprehensive range of Simms diesel fuel injection spares in stock. You can order them online from our shop https://shop.darwendiesels.com or you can call us on 01254 53545 or email using the contact form for more information. Stock parts can be despatched same day if we receive the order before 4pm.


  • 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