Delivery info

Free delivery on all our products which will take between 3-5 days. Next day delivery available. UK shipping only.

30 days returns

Not right for you? No problem. We offer 30 day returns please visit our returns page for help.

12 months warranty

Quality comes first and our products are designed to last which is why we offer 12 months warranty.

Cataclean Diesel Additive 500ml - HWB Car Parts

Cataclean Diesel Additive 500ml

We wont be beaten on price! See our price promise here.

Cataclean Diesel features a highly effective formula, which will clean and re-generate a diesel or petrol engine fuel system to perform like new. Its emission reducing solution can be the difference between an MOT emission failure and a pass.

This product is eligible for free UK delivery. Next day delivery available from £5.99. Same day delivery and click & collect in Swansea. Please select which delivery option is right for you at checkout. Click here for delivery info. 

Not happy with your new item? No problem. Simply send it back to us within 30 days of your purchase for a full refund. Terms & conditions apply. 


  • Reduce emissions by up to 60%
  • Cleans & protects the catalytic converter
  • Increases engine performance
  • Reduces risk of DPF clogging
  • Cataclean® Diesel is also safe with petrol engines.



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