Cat HEUI Injector Repairs

Don’t let failing Cat HEUI injectors sideline your vehicle. United Performance offers a fast, cost-effective solution to maximise the performance of your vehicle and ensure its output is optimised.

Our in-house repaired units come with a quality guarantee you can trust and are a fraction of the price of new injectors and even OEM exchange units, when available. Our team of internationally qualified technicians boast over 40 years of experience, utilising the latest equipment and top-tier parts to ensure a long-lasting repair.

Cat HEUI Injector Repairs | United Performance

Benefits of Cat HEUI injector testing and repairing

Cat HEUI systems rely on clean, high-quality engine oil for optimal function. Regular maintenance with oil changes and filter replacements following the manufacturer’s recommended intervals helps safeguard your injectors from costly repairs.

Using high-quality fuel and oil filters designed for HEUI systems further extends injector life and ensures smooth engine performance. By keeping your HEUI system clean, you’ll experience better fuel economy, avoid power loss, and extend the lifespan of your engine’s vital components.

This service will help you…
  • Save money as our repairs are significantly cheaper than replacing your injectors with new units or even OEM exchange units, when available.
  • Get your vehicle back on track quickly with in-house repairs completed at our modern specialist workshop.
  • Have peace of mind as our repairs are backed by a comprehensive guarantee for an assurance of quality.
  • Benefit from the knowledge of our internationally qualified technicians with over 40 years experience.
  • Have maximised trust in your vehicle and its lifespan, saving you money in the long term.
  • Increase vehicle efficiency, performance and labour output.

Maintaining your Cat HEUI system

The HEUI system relies on clean engine oil to function properly. Contaminated oil can lead to premature injector failure. Here are some key points to keep in mind to make sure you are maximising your vehicle output:

  • Strict Maintenance Schedule
  • High-Quality Oil & Filters
  • Clean Engine Oil
  • Regular Injector Maintenance
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Knowing when your Cat HEUI injectors need repairing

  • The engine has lost power, most noticeable when accelerating or climbing hills.
  • Engine misfires caused by faulty injectors.
  • Uneven engine idle or rough engine performance.
  • Poor fuel economy, fewer miles per gallon of diesel.
  • Excessive smoke coming from the exhaust.
  • Strong smell of diesel in the cabin, caused by an externally leaking injector.
Cat HEUI Injector Repairs | United Performance

What our customers say...

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Kartmanz W
Kartmanz W
17:42 18 May 22
Excellent family run business, very helpful and knowledgeable, highly recommended if you have any problems with your injectors, fuel pumps, dpf or even turbos now.
Lee Bowker
Lee Bowker
11:43 06 Apr 22
amazing company very helpful great work ethic and customer service 100%sent details of installation of injectors which is a great help would highly recommend them
Cameron Cumming
Cameron Cumming
12:46 23 Feb 22
'While you wait' service on a DPF clean, really professional and knowledgeable team. Excellent service.
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Specialist services

At our dedicated workshop in Shrewsbury, we provide professional, efficient and expert testing and restoration services. We’re known for our fast and efficient service but we never sacrifice the quality of our service.

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Applicable Industries



Diesel engines within the marine industry have a hefty task. Ships and boats are large and heavy, so engines that can pack a punch are a must.

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United Performance are very excited to announce that we can professionally and cost-effectively repair your Cat HEUI Injectors. Our in-house expertise combined with our cutting-edge equipment guarantees both quality and speed of turnaround.

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