Caterpillar C18-454 Marine Inboard Engine

Caterpillar C18-454 Marine Inboard Engine for Sale | Seawave Marine

Precision Power from the Experts in Marine Engineering

For over two decades, Seawave Marine has been a trusted supplier of Caterpillar marine propulsion systems for commercial, offshore, and pleasure craft worldwide. Drawing from years of direct field experience, our marine engineers and technicians deliver not only engines, but fully integrated power solutions that perform reliably in the world’s toughest sea conditions.

The Caterpillar C18-454 Marine Inboard Engine exemplifies Caterpillar’s engineering excellence — a 6-cylinder, 4-stroke diesel powerhouse delivering 454 horsepower (339 bkW) at 1800 RPM, built for endurance, efficiency, and consistent torque under demanding marine loads.

Why Professionals Choose the Cat C18-454

Our customers include shipyards, commercial operators, and government fleets who require proven performance and total reliability. Through extensive sea trials and years of operational data, Seawave Marine confirms that the Cat C18-454 provides outstanding fuel economy and low maintenance costs across a wide range of marine applications.

Key advantages:

• Field-proven reliability: Thousands of operating hours logged on Seawave-supplied C18 engines in global fleets.
• Optimized power curve: Delivers steady propulsion even under heavy displacement conditions.
• Engineered longevity: Forged steel camshaft, crankshaft, and a high-strength block minimize wear and extend service intervals.
• Fuel efficiency: Precision-controlled common-rail system reduces Caterpillar C18 marine engine fuel consumption while maintaining full torque.
• Ease of service: Modular design and electronic diagnostics make maintenance straightforward for operators and engineers.

Technical Specifications

Specification	Details
Model	Caterpillar C18-454 Marine Inboard Engine
Configuration	Inline 6-Cylinder, 4-Stroke-Cycle Diesel
Displacement	18.1 L (1100 cu in)
Bore x Stroke	145 mm x 183 mm (5.7 in x 7.2 in)
Rated Power	454 bhp (339 bkW)
Rated Speed	1800 RPM
Aspiration	Turbocharged / Aftercooled
Fuel System	Electronic Common Rail (A5E2 V2 ECM)
Lube Oil Capacity	45 L (12 gal)
Cooling System	Heat Exchanger, Seawater-Cooled
Emissions Compliance	US EPA Tier 3 / IMO II / EU Stage IIIA / CCNR II
Operating Conditions	Air ≤ 50 °C, Seawater ≤ 32 °C, Fuel ≤ 40 °C
Approx. Dry Weight	1,900 kg (4,189 lbs)

Compliance and Certification

Every Caterpillar C18-454 engine from Seawave Marine is factory-certified, fully compliant with EPA Tier 3, IMO II, and EU Stage IIIA emissions standards. Documentation, serial verification, and installation records are provided with each delivery to ensure traceability and regulatory assurance.

Warranty & After-Sales Support

All new C18-454 engines come with a 12-month or 1,000-hour limited warranty, backed directly by Caterpillar and supported by Seawave Marine’s certified service network.

We offer:

• Extended coverage options for up to 5 years.
• 24/7 global technical support and genuine Caterpillar spare parts.
• On-site installation and commissioning assistance by experienced Seawave technicians.
• Access to the Caterpillar C18 marine engine manual (PDF) and full service documentation.

Our technical support team has hands-on experience installing and maintaining hundreds of Caterpillar C18 ACERT marine engines — ensuring you get not just a product, but a lasting partnership.

Frequently Asked Questions

Q1: What is the horsepower rating of the Caterpillar C18-454 Marine Engine?
A: It produces 454 HP (339 bkW) at 1800 RPM, delivering smooth and efficient propulsion for mid-to-large vessels.

Q2: What are the fuel consumption figures for the C18-454?
A: At 1800 RPM under full load, average Caterpillar C18 marine engine fuel consumption ranges between 85 – 95 L/hr, depending on vessel size and conditions.

Q3: Can I get a Caterpillar C18-454 engine shipped internationally?
A: Yes. Seawave Marine ships globally with full export documentation and marine-grade crating.

Q4: Where can I access the Caterpillar C18 engine specifications PDF or service manual?
A: Customers receive a Caterpillar C18 engine specifications PDF and Caterpillar C18 marine engine manual PDF upon purchase or service enrollment.

Q5: How much does a Caterpillar C18-454 cost?
A: Pricing depends on configuration, delivery terms, and optional systems. Contact Seawave Marine for the latest Caterpillar C18-454 price and availability.

About Seawave Marine

Founded by marine engineers and ship power specialists, Seawave Marine has built its reputation on real-world experience, certified technical expertise, and long-standing partnerships with major engine manufacturers. Our team holds Caterpillar installation and service certifications and actively supports fleets in Asia, Europe, and the Middle East.

We don’t just sell engines — we design, install, and maintain complete propulsion systems. This hands-on experience allows us to advise customers on everything from Caterpillar C18 454 specs to custom fuel mapping for optimal performance.

With Seawave Marine, you’re choosing a supplier with proven expertise, transparent processes, and an unwavering commitment to operational safety and reliability.