Jackmark will be closed for Christmas from 12:00 PM on Wednesday, 24th December 2025, and will reopen at 8 AM on Monday, 5th January 2026. We want to take this opportunity to thank you for your continued support and loyalty throughout the year. We wish all our customers, both old and new, a Merry Christmas and a Happy New Year!

Engine Test

The engine test bench is a facility used by engine manufacturing plants to validate internal combustion engines before fitting to the vehicle. OEMs perform ‘Hot’ or ‘Cold’ testing operations in order to measure several physical variables and to diagnose any failure of parts or components. Jackmark Engineering provides bespoke rugged electrical test connection leads suitable for the industrial environment of petrol or diesel engine testing.

  • Auxiliary Power Leads
  • Engine Test Harnesses (Direct connection to ECU interface)
  • Engine Test Harnesses (Connection to individual sensors & actuators)
  • Intermediate Harnesses (Connection to test bench electrical cabinet)
  • Glow Plug Test leads
  • Link Leads
  • Power Adaptors
  • Engine specific Test Leads (Crank Position, Exhaust Gas Recirculation etc)
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