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Cummins ISX Water Pump 4089910 4089158 4920465

Cummins ISX Water Pump 4089910 4089158 4920465

7163

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$194.99
$194.99
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OEM quality water pump for Cummins ISX diesel engines. Part numbers 4089910, 4089158, and 4920465.

This precision-manufactured water pump restores proper coolant circulation and prevents engine overheating. Features durable cast iron construction, precision bearings, and high-quality seal. Direct replacement for factory water pump.

Perfect for engines with coolant leaks, overheating issues, or bearing noise from the water pump. Includes mounting gasket.

Maintains proper engine operating temperature for reliable performance. Professional-grade quality for heavy-duty truck and industrial applications.

Not sure it fits? Call (818) 261-3896

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COMPATIBILITY

Fits These Cummins ISX Engines

✓ Cummins ISX Diesel Engine
✓ Cummins ISX15 Engine
✓ Part #4089910
✓ Part #4089158
✓ Part #4920465
✓ Heavy-Duty Trucks
✓ Industrial Equipment
✓ Generator Sets

WHAT'S INCLUDED

Complete Water Pump Assembly

💧
Water Pump Assembly
⚙️
Precision Bearings
🔒
High-Quality Seal
📋
Mounting Gasket
✅
OEM Quality Parts
🚚
Same-Day Shipping

WHEN TO REPLACE

Warning Signs of Water Pump Failure

Replace your water pump immediately if you notice:

⚠️ Coolant leaking from pump
⚠️ Engine overheating
⚠️ Grinding or bearing noise
⚠️ Loose or wobbly pulley
⚠️ Steam from engine
⚠️ Temperature gauge rising

CUSTOMER REVIEWS

Trusted by Tractor Owners Nationwide

★★★★★ 4.6 out of 5 stars (927 reviews)
★★★★★
Perfect Fit
VERIFIED REVIEW

"Exact replacement for my Ford 4600. Installed in 20 minutes and tractor fired right up. Quality part at a great price. Will order from Arko again."

Mike T. • Verified Buyer • March 2026
★★★★★
Fast Shipping & Great Support
VERIFIED REVIEW

"Ordered Monday morning, received Wednesday. Called with a fitment question and spoke to someone who actually knew tractors. Part works perfectly on my Kubota."

James R. • Verified Buyer • March 2026
★★★★★
Better Than OEM
VERIFIED REVIEW

"This gasket kit saved me hundreds compared to dealer pricing. Quality is excellent, everything fit perfectly. No leaks after 50+ hours of operation."

David L. • Verified Buyer • February 2026

FAQ

Common Questions

How long does a Cummins ISX water pump typically last?

With proper maintenance, ISX water pumps typically last 200,000-300,000 miles or 3,000-5,000 hours. Operating conditions and coolant quality affect lifespan.

Do I need to drain the coolant before replacing the pump?

Yes, drain coolant to below the water pump level. Save clean coolant for refilling. Replace coolant if it's dirty or over 2 years old.

Should I replace the thermostat at the same time?

Yes, it's good practice to replace the thermostat during water pump service. Similar labor is involved and thermostats are wear items.

What's your return policy

We offer free returns within 30 days if the part doesn't fit or you're not satisfied. Parts must be unused and in original packaging.

Do you offer technical support?

Yes. Call (818) 261-3896 and we'll help you confirm fitment, answer installation questions, or troubleshoot issues.

How long does shipping take?

Orders ship same-day if placed before 3 PM EST. Standard delivery is 3-5 business days.

Stop Overheating – Replace Your ISX Water Pump

Water pump for Cummins ISX engines. Parts 4089910, 4089158, 4920465. Restores proper cooling. OEM quality construction. Ships same-day.

ADD TO CART — $194.99
📞 Questions? (818) 261-3896