AMSOIL — Diesel Cetane Boost for Marine Diesel Engines — CCBCN
In stock items ship same or next day.
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
AMSOIL Diesel Cetane Boost for Marine Diesel Engines
This cetane booster is a fuel treatment made for marine diesel engines. It is built to raise ignition quality, support easier cold starts, and help the whole fuel system run cleaner, from tank to injector. If you are running a boat that idles for long hours, burns lower-quality diesel, or sits through long storage periods, this additive is made for the way those engines actually work.
Compatible Applications
- Sailboat auxiliary diesel engines
- Trawler and motor yacht diesel engines
- Commercial fishing vessels and workboats
- Marine diesel engines running standard or ultra-low sulfur diesel
Check your engine owner's manual to confirm fuel additive use before the first treatment.
Part Details
- Brand: AMSOIL
- Product type: Cetane booster fuel additive
- Ordering reference: CCBCN
- Condition: New
Key Features
- Raises the cetane rating of diesel fuel for shorter ignition delay and smoother combustion
- Supports easier cold starts and reduced white smoke during warm-up
- Detergent package cleans deposits from fuel injectors and helps prevent new buildup
- Lubricates fuel pumps and injectors for wear and corrosion protection
- Helps disperse water contamination in the fuel system
- Helps prevent fuel degradation during extended storage
- Cleaner combustion for reduced smoke, particulates, and emissions
- Designed for use in all diesel engines and compatible with biodiesel blends
Service Interval
Add at each refueling for continuous protection, following the dosage instructions on the product label. Continuous treatment is what keeps the benefits in place; a single dose will not carry through a season.
Technical FAQ
What does a cetane booster actually change? Cetane number measures how quickly diesel fuel ignites. A higher cetane number shortens the ignition delay, which supports more complete combustion, easier starting, and smoother, quieter operation.
Can it be used in engines that run on ultra-low sulfur diesel? Yes. It is designed for use in all diesel engines, and its lubricating package matters more, not less, with ultra-low sulfur diesel, which has reduced natural lubricity.
Does it replace a fuel/water separator? No. It helps disperse water contamination in the fuel, but filtering water out of the fuel is a separate job handled by a fuel/water separator.
Is it safe with biodiesel blends? The product is compatible with biodiesel blends.
How is it stored? Store in a cool, dry location away from direct sunlight, and keep the container tightly closed when not in use.
Related Products
Other diesel fuel and engine care products stocked in this store:
- Starbrite 93100 Star Tron Diesel Additive, 1 Gallon — a diesel fuel treatment in a 1-gallon container from a different additive line.
- Starbrite 93105 Star Tron Diesel Additive, 5 Gallon — the same Star Tron diesel treatment in a 5-gallon size.
- ComStar Hum-Out Diesel Fuel Biocide, 16 oz — a biocide for treating microbial growth in fuel tanks, aimed at tank contamination rather than cetane quality.
- Racor 120AS Fuel/Water Separator Filter — a 2 micron, 15 GPH filter for diesel and gasoline that separates water from fuel before it reaches the engine, a different job from a fuel additive.
Parts Desk Insights
Best use case: This additive is at its best on boats with older diesel engines or lower-quality fuel, where hard starts, white smoke on startup, and diesel knock show up most. If you are seeing any of those symptoms, a cetane booster is the fuel-side tool for the job.
Most common mistake: Treating the tank once and expecting season-long results. Cetane boosters work as a continuous treatment, so the benefit follows the fuel. Skipping treatments at refueling removes what the additive was doing.
Sizing and dosing: Dose is based on fuel tank capacity, so confirm your tank volume before ordering or treating. The measurement is on the tank plate or in the boat's documentation. If you are adding it to a partially filled tank, add the treatment before fueling so the incoming fuel mixes it through the tank.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.