Caterpillar C18 Marine Heat Exchanger – Plates, Gaskets & Seals
High-Performance Heat Exchanger Solutions for the CAT C18 Marine Propulsion Engine
C18 heat exchanger shipped to MechPro for inspection and cleaning.
CAT C18 heat exchanger parts and service.
CAT C-18 marine heat exchanger being serviced.
Caterpillar C18 Heat Exchanger Gaskets, Plates & Seals
The Caterpillar C18 marine propulsion engine demands superior cooling performance in harsh salt-water and freshwater environments. At MechPro, we specialise in providing premium replacement heat exchanger components—plates, gaskets, O-rings, spacers, bolts and collars—for the C18 platform. Whether you’re servicing commercial fishing vessels, offshore support craft or recreational yachts, our robust product suite is engineered for reliability, extended service intervals and hardened marine conditions.
CAT C-18 heat exchanger plates in refurbished unit.
CAT C-18 marine heat exchanger parts assembly scheme drawing.
Why Choose MechPro
- Worldwide Shipping – Fast and reliable delivery of all Cat® marine heat exchanger parts.
- Genuine & Aftermarket Options – OEM-spec compression, heat tolerance, and installation compatibility.
- Expert Support – Send us your serial number, part code, or image for instant identification help.
- Trusted Supplier – Over 15 years of heat exchanger service expertise across marine, refinery, and power generation industries.
Precision-Engineered for Reliability
Long-term durability, high fuel efficiency, simplified service, and long-life-to-overhaul — Cat® marine engines are designed for maximum productivity and minimal downtime.
A consistent maintenance schedule extends your Caterpillar engine’s lifespan and performance.
MechPro supports that mission by providing exact-fit heat exchanger components built to OEM specifications.
MechPro supplies CAT C-18 heat exchanger gaskets
Refurbished CAT C18 heat exchanger boxed and ready for delivery.
Refurbished and remounted heat exchanger on CAT C-18 marine diesel engine.
To Schedule Parts & Service Today
Call 1 (800) 249-6709 or Use our RFQ Form
OEM part numbers for the C18 heat-exchanger (sea-water or freshwater cooling) systems. These cover plate packs, channel plates, spacers, bolts, seals and collars. (Be sure to confirm serial number / configuration before ordering.)
- Plate Pack – with fuel-cooling section: 202-7529
- Plate Pack – non-fuel-cooled version: 202-7528
- Channel Plate / Plate (replacement): 202-7531
- Additional Plate variants: 202-7535, 202-7537, 202-7538, 202-7539
- Heat Exchanger Group (Sea-Water) core: 201-6758
- Heat Exchanger Group (Sea-Water) alternate: 290-3989
- Bolt / Spacer / Collar / Seal references (sample):
- Bolt (3/8-16 × 1.5-in) – found in service bulletin listing.
- Spacer special – part number listed under heat-exchanger assembly.
- Seal-O-Ring – referenced multiple times in the heat exchanger components list.
Product Overview
Heat Exchanger Gaskets
Create a tight, leak-free seal between exchanger plates. Essential for efficient operation and fluid isolation.
Heat Exchanger Plates
Precision-engineered titanium plates maximize heat transfer efficiency, ensuring consistent cooling for C30 engines.
Heat Exchanger Seals
Durable elastomeric seals prevent leaks at joints and maintain proper pressure within the system.
Together, these components sustain optimal engine cooling performance, prevent overheating, and extend engine life.
Supported Engine Models
MechPro provides compatible heat exchanger parts and service for:
3406, 3408, 3412, 3508, 3512, 3516, C15, C18, C30, C32, C15 ACERT, C18 ACERT, C32 ACERT
Caterpillar C18 Marine Propulsion Engine Specs
- Model: C18
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Configuration: In-Line 6, 4-Stroke-Cycle Diesel
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Fuel Type: Diesel
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Power Rating: 454–803 bhp (339–847 kW) for many commercial versions
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Speed Range / Rated RPM: 1500–2100 rpm for many commercial applications
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Cooling System: Heat-exchanger cooled (salt/freshwater)
Request a Quote
Whether you need a single gasket or a full heat exchanger rebuild kit, MechPro can help.
📞 Call: 1 800 249-6709
📧 Email: [email protected]
Or simply use our Request for Quote form to send us your engine model and photos of the exchanger — we’ll handle the rest.
Disclaimer
All manufacturer names, part numbers, and product descriptions are provided for reference and identification purposes only. Caterpillar®, CAT®, and associated model names and numbers are registered trademarks of Caterpillar Inc.
MechPro is not an authorized dealer for Caterpillar Inc. and is not affiliated with the company. Our inventory is constantly changing and may include both genuine OEM parts and high-quality aftermarket replacements. Unless explicitly stated, we do not guarantee that a listed item is manufactured by the original equipment manufacturer.
Product images, diagrams, and specifications are for reference only and may not exactly match the item shipped. Customers should use original part numbers to verify compatibility and determine the most suitable replacement for their needs.