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⛽ Unlock your diesel engine’s hidden potential — drive smarter, cleaner, faster!
STP Ultra 5 in 1 Diesel Fuel System Cleaner is a concentrated 400ml liquid formula designed to clean, condition, and protect diesel engines. It removes deposits, reduces friction and corrosion, improves throttle response, and enhances fuel economy while lowering emissions. Highly rated and trusted by professionals, it’s a must-have for maintaining peak diesel engine performance.















| ASIN | B00NC1ER3U |
| Best Sellers Rank | 22 in Automotive ( See Top 100 in Automotive ) 1 in Carburettor Cleaners 1 in Fuel Systems |
| Brand Name | STP |
| Contains Liquid Contents? | Yes |
| Country of Origin | United Kingdom |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,798) |
| Global Trade Identification Number | 05020144800132 |
| Included Components | Diesel System Cleaner |
| Item Form | Liquid |
| Item Highlight | Restores Power and Protects your Engine, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK |
| Item Type Name | Car Care Ultra Diesel System Cleaner, 5 in 1 Concentrated Cleaning Formula for Diesel Engines, 400 ml |
| Item Volume | 400 Millilitres |
| Item Weight | 0.88 Pounds |
| Manufacturer | STP |
| Model Number | 77400EN |
| Number of Items | 1 |
| Part Number | GST77400EN |
| Scent | Ketane |
| Size | 400 ml (Pack of 1) |
| Special Features | Concentrated |
| Specific Uses For Product | Engine |
| Surface Recommendation | Metal |
| Unit Count | 400.0 millilitre |
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