CAT C18 Engine Rebuild Parts, Overhaul Kits & Components
September 2, 2026
- Caterpillar C18 Marine Rebuild Parts: What Do You Actually Need for an Engine Overhaul?
- browse CAT C18 marine engine spare parts and Caterpillar C18 parts
- search our marine spare-parts catalog
- What Type of Engine Is the Caterpillar C18 Marine?
- “I Need a CAT C18 Rebuild Kit.” Is That Enough Information?
- Top-End Rebuild or Major C18 Overhaul?
- C18 Top-End Rebuild
- 455-1192 / 4551192
- 455-1195 / 4551195
- C18 Major Engine Overhaul
- 455-1186 / 4551186
- 455-1187 / 4551187
- 455-1188 / 4551188
- 455-7246 / 4557246
- Are All Caterpillar C18 Overhaul Kits the Same?
- Caterpillar C18 Rebuild Parts: What Should Be Inspected?
- C18 Pistons and Piston Rings
- C18 Cylinder Liners
- C18 Main Bearings and Connecting-Rod Bearings
- C18 Cylinder Head and Gasket Parts
- 571-9902 / 5719902 — Cylinder Head Gasket Kit
- “Should We Replace All Six C18 Injectors While the Engine Is Apart?”
- “What About the Turbocharger During a C18 Rebuild?”
- Don't Forget the C18 Seawater and Cooling System
- “The C18 Is Already Completely Apart. What Do I Send You?”
- Cylinder Components
- Bottom End
- Top End
- Fuel System
- Cooling System
- Air System
- Should I Buy a Complete C18 Overhaul Kit or Individual Parts?
- Genuine Caterpillar, OEM, Aftermarket or Reman?
- What If the Part Number From My Old C18 Doesn't Match the New Number?
- Why Should I Keep the Old C18 Parts Until the Rebuild Is Finished?
- Caterpillar C18 Marine Overhaul Kit Part Numbers
- Important
- What Does a Good C18 Rebuild RFQ Look Like?
- Caterpillar C18 Marine Rebuild FAQs
- What rebuild kit fits a Caterpillar C18 marine engine?
- What are some Caterpillar C18 overhaul kit part numbers?
- What is the difference between a C18 top-end rebuild and major overhaul?
- Does a C18 rebuild kit include pistons and liners?
- How many pistons does a Caterpillar C18 have?
- Should all six injectors be replaced during a C18 rebuild?
- Should I replace the turbocharger during a C18 overhaul?
- Should I replace the C18 seawater pump during the rebuild?
- Can I order C18 rebuild parts using only the serial number?
- Can I use aftermarket Caterpillar C18 rebuild parts?
- What if I don't know the C18 part numbers?
- Where can I find Caterpillar C18 marine engine parts?
- Need Caterpillar C18 Marine Rebuild Parts?
- request a quotation
- request@alfamarinespareparts.com