Caterpillar C9 Seawater Pump: Part Numbers & Problems
September 6, 2026
- Caterpillar C9 Seawater Pump: Part Numbers, Problems & Replacement
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- Caterpillar C9 Marine Engine Parts
- Caterpillar Marine Engine Parts & Rebuild Kits
- Which Seawater Pump Fits a Caterpillar C9?
- What Does the C9 Seawater Pump Actually Do?
- Is the Caterpillar C9 Seawater Pump Gear Driven?
- My CAT C9 Runs Hot Under Load. Is the Pump Bad?
- How Do I Know If My C9 Seawater Pump Is Wearing Out?
- My C9 Seawater Pump Is Leaking. Do I Need a New One?
- Low Seawater Flow? Check These Before Buying a Pump
- What Is Caterpillar 353-7979?
- send us your engine information
- What About Caterpillar 20R-0753?
- Can a Dirty Heat Exchanger Look Like a Bad Seawater Pump?
- Is the C9 Seawater Pump the Same as the C9.3 Pump?
- Caterpillar Marine Engine Parts
- Caterpillar C9 Seawater Pump FAQs
- “My C9 is fine at idle but overheats when I'm cruising. Would you change the seawater pump?”
- “I've found 353-7979 on the pump. Is that enough to order?”
- “I have 20R-0753. Can you still help?”
- “There's a little water coming from the pump. Can I keep running it?”
- “I cleaned the sea strainer but the C9 still runs hot. What should I check next?”
- “Can you identify my pump if I can't read the part number?”
- Send us your C9 pump details
- Need a Caterpillar C9 Seawater Pump?
- Get a Quote for Your CAT C9 Seawater Pump
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