--- product_id: 659314820 title: "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" brand: "stp" price: "34316CFA" currency: XOF in_stock: true reviews_count: 13 category: "Stp" url: https://www.desertcart.sn/products/659314820-stp-ultra-5-in-1-diesel-fuel-system-cleaner-400ml store_origin: SN region: Senegal --- # 5-in-1 concentrated formula boosts fuel economy & reduces emissions restores engine power & performance 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 **Brand:** stp **Price:** 34316CFA **Availability:** ✅ In Stock ## Summary > ⚡ Unlock your diesel’s hidden power and efficiency — don’t let deposits hold you back! ## Quick Answers - **What is this?** 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 by stp - **How much does it cost?** 34316CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/659314820-stp-ultra-5-in-1-diesel-fuel-system-cleaner-400ml) ## Best For - stp enthusiasts ## Why This Product - Trusted stp brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Peak Engine Revival:** Removes carbon deposits to restore lost horsepower and smooth operation - • **Eco-Smart Efficiency:** Enhances fuel economy while cutting harmful exhaust emissions - • **Trusted UK Innovation:** Backed by 60+ years of STP expertise, engineered for modern diesel engines - • **Engine Armor Protection:** Reduces friction and corrosion to extend engine life and reliability - • **Complete Fuel System Detox:** Cleans and conditions injectors, valves, and fuel lines in one powerful dose ## Overview STP Ultra 5 in 1 Diesel Fuel System Cleaner is a concentrated 400ml liquid additive designed to clean and protect diesel engines by removing carbon deposits, restoring power, improving fuel economy, and reducing emissions. Made in the UK with over six decades of STP expertise, it supports smoother engine performance and longer engine life, making it a must-have for diesel vehicle maintenance. ## Description From the manufacturer STP = Scientifically Treated Petroleum Build up - Intake Valves Deposits on the intake valves can restrict or change the flow of air/fuel mixture into the combustion chamber When you shut off the engine, fuel that remains on the intake valves can polymerize into a hard carbon deposit or form a sticky gum Oil leaks past the valves seals and can contribute to deposits on the back of the intake valves Exhaust gas recirculation, which is a mechanism used in engines to reduce emissions, can cause soot and other combustion by-products to deposit onto the valves Fuel Additives For over 60 years, and for more miles than anyone can count, STP has been one of the most trusted names in automotive care. Car enthusiasts, “Do-it-Yourselfers” and professional racers rely on STP oil additives, fuel additives and brake and power steering fluids to keep their vehicles running better longer Due to 'Long Life' servicing intervals being stretched further, many vehicles face a build up of deposits that could have major implications on engine performance So why Use a Fuel additive? Additives are a relevant part of engine maintenance regime Car manufacturers recognise that “Clean engines = Better performance” Additives help keep vehicles running well, extends reliability, less likely to break down Build up of carbon deposits can occur within 4,000 miles, no matter how new or old the car is Build up - Injector Cleaners Clean fuel injectors are critical to vehicle performance Deposits can affect spray pattern and flow rate The spray pattern of fuel affects air/fuel mixing Fuel may be in droplets that don’t evaporate Fuel may stick to the intake port and not be drawn into the combustion chamber Clogging affects amount of fuel delivered, which results in inaccurate air/fuel blend Review: Essential for My Tuning Business – Keeps Diesel Engines Running Smooth - I’ve been using the STP Ultra 5 in 1 Diesel Fuel System Cleaner in my car tuning and workshop business for a while now, and it’s been fantastic. I use it on everything from standard diesel vehicles to high-performance tuning projects, and it consistently delivers excellent results. This cleaner tackles multiple issues at once — it cleans injectors, removes carbon deposits, prevents corrosion, and improves overall fuel efficiency. I’ve noticed smoother running engines, reduced smoke, and more responsive performance after use. It’s also incredibly easy to use and works with every diesel vehicle I’ve tested. Compared to other fuel additives I’ve tried, this one really stands out for its reliability and effectiveness. It’s a small investment that pays off in better engine performance, longevity, and fewer maintenance issues. For any professional working with diesel vehicles — whether in tuning, repairs, or general maintenance — the STP Ultra 5 in 1 Diesel Fuel System Cleaner is an absolute Review: Smoother running and better MPG - I’ve used this 4 times now on my 2008 Land Rover Discovery 3 (150k miles) Each time has quietened the injectors and made the engine overall more quiet and smoother, while increasing the power, efficiency and slightly increasing the MPG. I’ll be doing it a 5th time in a couple of thousand miles and will report again. ## Features - Contains amides, C18-unsatd., N-[3-(dimethylamine)propyl]. May produce an allergic reaction. - May be fatal if swallowed and enters airways. - Repeated exposure may cause skin dryness or cracking. - Toxic to aquatic life with long lasting effects. - What You'll Get - 400 ml Diesel Fuel System Cleaner - Concentrated Cleaning Power - Cleans and conditions the entire fuel delivery system in one tank - Restores Power and Performance - Recovers peak engine performance by removing harmful deposits - Protects Your Engine - Reduces friction and protects key engine parts from wear and corrosion - Reduces Diesel consumption and exhaust emissions - promotes better fuel economy ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00NC1ER3U | | Best Sellers Rank | 29 in Automotive ( See Top 100 in Automotive ) 1 in Fuel Systems | | Brand | STP | | Brand Name | STP | | Contains Liquid Contents? | Yes | | Customer Reviews | 4.6 out of 5 stars 3,748 Reviews | | Global Trade Identification Number | 05020144800132 | | Included Components | Diesel System Cleaner | | Item Form | Liquid | | 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 | | Item form | Liquid | | Item volume | 400 Millilitres | | 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 | | Specific uses for product | Engine | | Surface Recommendation | Metal | | Unit Count | 400.0 millilitre | | Unit count | 400.0 millilitre | ## Product Details - **Brand:** STP - **Item form:** Liquid - **Item volume:** 400 Millilitres - **Item weight:** 0.88 Pounds - **Number of items:** 1 - **Scent:** Ketane - **Special feature:** Concentrated - **Specific uses for product:** Engine - **Surface recommendation:** Metal - **Unit count:** 400.0 millilitre ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/61LI+B+kwwL.jpg) ## Available Options This product comes in different **Style Name** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Essential for My Tuning Business – Keeps Diesel Engines Running Smooth *by T***D on 7 December 2025* I’ve been using the STP Ultra 5 in 1 Diesel Fuel System Cleaner in my car tuning and workshop business for a while now, and it’s been fantastic. I use it on everything from standard diesel vehicles to high-performance tuning projects, and it consistently delivers excellent results. This cleaner tackles multiple issues at once — it cleans injectors, removes carbon deposits, prevents corrosion, and improves overall fuel efficiency. I’ve noticed smoother running engines, reduced smoke, and more responsive performance after use. It’s also incredibly easy to use and works with every diesel vehicle I’ve tested. Compared to other fuel additives I’ve tried, this one really stands out for its reliability and effectiveness. It’s a small investment that pays off in better engine performance, longevity, and fewer maintenance issues. For any professional working with diesel vehicles — whether in tuning, repairs, or general maintenance — the STP Ultra 5 in 1 Diesel Fuel System Cleaner is an absolute ### ⭐⭐⭐⭐⭐ Smoother running and better MPG *by D***S on 30 December 2025* I’ve used this 4 times now on my 2008 Land Rover Discovery 3 (150k miles) Each time has quietened the injectors and made the engine overall more quiet and smoother, while increasing the power, efficiency and slightly increasing the MPG. I’ll be doing it a 5th time in a couple of thousand miles and will report again. ### ⭐⭐⭐⭐ Engineer cleaner *by A***. on 28 May 2026* Seems to be okay, not noticed any improvement yet ## Frequently Bought Together - 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 - STP Diesel Particulate Filter Cleaner 200 ml, Cleans and Protects Your Filter by Removing Soot in One Treatment, Restores Power and Acceleration, Mechanical Car Cleaning Products, Made in the UK - STP Diesel High Milage Injector Cleaner 200 ml, Cleans and Protects your Engine for 300 miles, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/659314820-stp-ultra-5-in-1-diesel-fuel-system-cleaner-400ml](https://www.desertcart.sn/products/659314820-stp-ultra-5-in-1-diesel-fuel-system-cleaner-400ml) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-06-20*