--- product_id: 39558903 title: "MK-50121-06 Diesel Cetane Boost, 64-Ounce, Single" brand: "motorkote" price: "€ 61.89" currency: EUR in_stock: true reviews_count: 8 category: "Motorkote" url: https://www.desertcart.hr/products/39558903-mk-50121-06-diesel-cetane-boost-64-ounce-single store_origin: HR region: Croatia --- # Boosts cetane by up to 7 pts Cleans fuel injectors & system Improves cold starts & reduces smoke MK-50121-06 Diesel Cetane Boost, 64-Ounce, Single **Brand:** motorkote **Price:** € 61.89 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite Performance, Every Mile Counts! ## Quick Answers - **What is this?** MK-50121-06 Diesel Cetane Boost, 64-Ounce, Single by motorkote - **How much does it cost?** € 61.89 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/39558903-mk-50121-06-diesel-cetane-boost-64-ounce-single) ## Best For - motorkote enthusiasts ## Why This Product - Trusted motorkote brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power Ignited ⚡:** Elevate your diesel’s cetane rating by up to 7 points for lightning-fast ignition and peak engine responsiveness. - • **Injector Detox 🧼:** Flush harmful deposits from your fuel system to maintain optimal flow and prolong engine life. - • **Winter Warrior ❄️:** Conquer cold mornings with smoother starts, less white smoke, and quieter engine warm-ups. - • **Fuel Freshness Lock 🔒:** Stabilizes diesel fuel against oxidation and contamination, keeping your tank clean and performance consistent. - • **Universal Diesel Ally 🌍:** Safe for ULSD, biodiesel, and all blends—perfect for trucks, tractors, and marine engines alike. ## Overview Motorkote MK-50121-06 Diesel Cetane Boost is a premium 64-ounce additive that raises diesel fuel cetane levels by up to 7 points, enhancing ignition speed and combustion quality. It cleans fuel injectors, improves cold starts by reducing white smoke and engine noise, and stabilizes fuel to prevent degradation. Compatible with all diesel blends including ULSD and biodiesel, it ensures smoother operation, better throttle response, and prolonged engine life across a wide range of diesel-powered vehicles and equipment. ## Description MotorKote Diesel Cetane BoostMotorKote Diesel Cetane Boost is a premium diesel fuel additive designed to improve engine performance by increasing the cetane number in diesel fuel. Cetane measures how quickly and efficiently diesel fuel ignites. By raising cetane levels, this additive ensures better combustion, smoother operation, and enhanced responsiveness.This product boosts the cetane rating by up to 7 points, making cold starts easier while reducing white smoke and engine noise. It cleans the fuel system, removing harmful deposits from injectors, and promotes optimal fuel flow for better engine performance. Regular use stabilizes diesel fuel, preventing oxidation and degradation that can lead to poor performance and increased emissions.Key Features:Boosts Cetane Levels: Improves combustion and engine responsiveness.Enhances Cold Starts: Reduces white smoke and noise during warm-up.Cleans Fuel System: Removes harmful deposits from injectors for better fuel flow.Stabilizes Fuel: Prevents oxidation and keeps fuel fresh for longer.Safe for All Diesel Fuels: Compatible with ULSD, biodiesel, and blends.For maximum results, add 1 ounce of MotorKote Diesel Cetane Boost per 5 gallons of diesel fuel to increase the cetane rating by up to 7 points. For a moderate increase of 3 points, add 1 ounce per 10 gallons. Simply shake the bottle well and pour the required amount into your fuel tank before refueling.Regular use of MotorKote Diesel Cetane Boost improves fuel economy, reduces engine noise, and extends the life of your diesel engine. It’s perfect for high-performance engines or vehicles operating in demanding conditions, offering cleaner combustion, enhanced fuel efficiency, and long-term engine protection. Review: Good brand for cetane - I'm giving this 5 Stars even though one of my bottles was leaking and got all over everything but it wasn't an extreme amount but enough to get over everything and make a mess but anyway besides that this is good cetane and can easily be gotten from desertcart and I will buy again when this runs Out Review: it works - I notice a change in the combustion sound of the engine. The car runs a lot better but didn't notice any mpg gains. ## Features - BOOSTS CETANE LEVELS. Increases diesel fuel cetane rating by up to 7 points, improving ignition speed and combustion quality. This leads to faster starts, smoother operation, better throttle response, and overall enhanced engine performance in all diesel-powered vehicles and equipment. - CLEANS FUEL SYSTEM. Removes harmful deposits from injectors and other fuel components, restoring optimal fuel flow and ensuring consistent performance. Regular use prevents the build-up of residues that can reduce engine efficiency, prolonging the life of your fuel system. - IMPROVES COLD STARTS. Enhances fuel ignition quality for easier starting in cold weather, reducing white smoke and engine noise during warm-up. This results in a smoother driving experience and less strain on your engine in freezing temperatures. - STABILIZES FUEL. Prevents diesel fuel from degrading by protecting against oxidation and contamination. This keeps your fuel fresh and clean for longer, reducing emissions, maintaining engine power, and ensuring reliable performance even during long storage periods. - SAFE AND VERSATILE. Compatible with Ultra Low Sulfur Diesel (ULSD), biodiesel, and all diesel blends. Free of harmful solvents, this additive is safe for all diesel engines, whether in passenger vehicles, semi-trucks, agricultural machinery, or marine equipment. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00DRGQ1AC | | Best Sellers Rank | #1,003,124 in Automotive ( See Top 100 in Automotive ) #275 in Diesel Additives | | Brand | Motorkote | | Customer Reviews | 4.4 4.4 out of 5 stars (66) | | Date First Available | July 3, 2013 | | Item Weight | 3.33 pounds | | Item model number | MK-50121-06 | | Manufacturer | Motorkote | | Manufacturer Part Number | MK-50121-06 | | Model | MK-50121-06 | | Product Dimensions | 4.25 x 10 x 4.25 inches | | Voltage | 12 Volts | ## Images ![MK-50121-06 Diesel Cetane Boost, 64-Ounce, Single - Image 1](https://m.media-amazon.com/images/I/81PYJ-EWg-L.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good brand for cetane *by M***E on December 18, 2021* I'm giving this 5 Stars even though one of my bottles was leaking and got all over everything but it wasn't an extreme amount but enough to get over everything and make a mess but anyway besides that this is good cetane and can easily be gotten from Amazon and I will buy again when this runs Out ### ⭐⭐⭐⭐⭐ it works *by M***E on April 7, 2022* I notice a change in the combustion sound of the engine. The car runs a lot better but didn't notice any mpg gains. ### ⭐⭐⭐⭐⭐ Easy to add *by S***X on July 26, 2023* Price ## Frequently Bought Together - Motorkote MK-50121-06 Diesel Cetane Boost, 64-Ounce, Single - Motorkote MK-10203-06 Upper Cylinder Lubricant, 64-Ounce, Single - Motorkote MK-HL32-06 Heavy Duty Hyper Lubricant Engine Treatment, 32-Ounce, Single, Black --- ## 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.hr/products/39558903-mk-50121-06-diesel-cetane-boost-64-ounce-single](https://www.desertcart.hr/products/39558903-mk-50121-06-diesel-cetane-boost-64-ounce-single) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-24*