Best Fuel Systems Deals Online in the UK (10 Deals Found)

Last Updated - 01/04/2026 Sort By:

Best Choice
STP

New
STP Ultra 5 in 1 Petrol System Cleaner 400ml, Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical
Concentrated Cleaning Power - Cleans and conditions the entire fuel delivery system in one tank

£11.19 £11.56
Best Value
STP

New
STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml , Restores Power and Protects your Engine, Enhances Fuel Economy, Mech
What You'll Get - 400 ml Diesel Fuel System Cleaner

£13.55 £18.99
29% Off
STP

New
STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml , Restores Power and Protects your Engine, Enhances Fuel Economy, Mech
What You'll Get - 400 ml Diesel Fuel System Cleaner

£13.55 £18.99
Wynn's

New
Wynn's Extreme Diesel System Cleaner - Deep Cleaning Engine Treatment - Restores Fuel Economy & Reduces Emissions - Prev
✅ CLEANS THE ENTIRE DIESEL FUEL SYSTEM: Effectively removes dirt, carbon deposits, and other harmful residues that accum

£7.49
Wynn's

New
Wynn's Extreme Diesel System Cleaner - Deep Cleaning Engine Treatment - Restores Fuel Economy & Reduces Emissions - Prev
✅ CLEANS THE ENTIRE DIESEL FUEL SYSTEM: Effectively removes dirt, carbon deposits, and other harmful residues that accum

£7.49
Wynn's

New
Wynn's Total Action Diesel Cleaner – All-in-One Fuel and Exhaust System Cleaner – Protects Injectors, Valves, Turbo, DPF
✅ TRIPLE ACTION CLEANING POWER – BEFORE, DURING AND AFTER COMBUSTION: The advanced formulation of this diesel cleaner en

£13.79
Wynn's

New
Wynn's Total Action Diesel Cleaner – All-in-One Fuel and Exhaust System Cleaner – Protects Injectors, Valves, Turbo, DPF
✅ TRIPLE ACTION CLEANING POWER – BEFORE, DURING AND AFTER COMBUSTION: The advanced formulation of this diesel cleaner en

£13.79
15% Off
STP

New
STP Diesel Fuel Additive Treatment Bundle, Includes Diesel Injector Cleaner and Ultra 5-in-1 Diesel System Cleaner, Clea
STP Diesel Bundle contains STP Diesel Injector Cleaner 200ml and STP Ultra 5-in-1 Diesel System Cleaner 400ml

£16.99 £19.99
Liqui Moly

New
LIQUI MOLY Fuel System Treatment | 300 ml | Petroladititive | SKU: 8365
Used for petrol injection systems with or without turbocharging.

£9.49
Liqui Moly

New
LIQUI MOLY Fuel System Treatment | 300 ml | Petroladititive | SKU: 8365
Used for petrol injection systems with or without turbocharging.

£9.49

10 Fuel Systems deals are available from: Amazon stores, starting from £7.49.
The biggest discount we found is 29% on STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml , Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK at Amazon.
The lowest price we found is £7.49 while the highest is £16.99.
Prices for the best Fuel Systems deals average at £11.68.
Last updated on April 1, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Fuel Systems.