New 4N8559 Core A Rad Replacement suitable for Caterpillar Equipment

  • New Core A Rad Replacement suitable for Caterpillar Equipment
  • Made to USA Specification

Buy with Confidence: All parts are covered by our warranty

$3,280.82

4.7

(Site rating)
In Stock | Ships Out Today | Order By 3pm ET
SKU
4N8559CTP
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Description for 4N8559 Core A Rad

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This aftermarket Caterpillar 4N8559 Core A Rad is built to meet U.S. OEM specifications for durability and performance. At Propel Parts, we perform strict quality checks to ensure it fits and functions like your original Caterpillar Core A Rad.
Direct Replacement: Engineered for a precise fit in Caterpillar equipment.
OEM-Spec Quality: Manufactured to match the performance of your original part.
Tested Reliability: Strict quality checks are performed before shipping.

Specification for 4N8559 Core A Rad

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Replacement Part Number(s): 4N-8559, 5815582
Specifications: Aftermarket Part | US OEM Specs.
Shipping: Same Day (Weekdays) | Order by 3pm.
Warranty: Unlimited Mileage | 1 Year Warranty.
Core: No Core Required | No Core Charge.
Weight: 306.00 LBS | 138.80 KG
Dimensions: 19.69 x 51.97 x 50.79 (inches)
Condition: New

Exact Fit Guarantee for 4N8559 Core A Rad

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Looking for a reliable replacement Caterpillar 4N8559 Core A Rad ? Order with confidence through our Exact Fit Guarantee.
Verified Fit: Before we ship, we check your part against CAT SIS (Caterpillar Service Information System) to confirm it's the correct match for your machine.
Peace of Mind: If it isn't the right fit, we'll contact you with the correct Caterpillar part number before your order goes out.
Exclusive Guarantee: Enroll in our Exact Fit Guarantee at checkout to ensure you get the part you need the first time.
More Information
Models 3412, 3406C, 3408C
Dimensions 19.69x51.97x50.79
Customer Reviews
  1. 100%
    A Delay Handled the Right Way
    Honestly, if I were in Miami like my shipment was, I wouldn?t have been in a hurry to ship out either. I was frustrated at first ? delays cost me time on the job ? but Propel Parts stepped up.

    Deb, Daniel and the team owned the mistake, kept the communication clear, and graciously refunded my shipping costs without making it a hassle. That kind of accountability is rare these days, and I genuinely appreciated how they handled it.

    Things don?t always go perfectly, but these folks proved they?re more interested in doing right by their customers than just pushing parts out the door. Solid company, solid people.

    ? Jimmy Spong
    Hartco Mobile Welding

    P.S. Incredible quality on the pin as well. I had to do some custom modifying, and let?s just say the case hardening was ? well ? hard. Great Stuff! Thank you.
  2. 100%
    Prompt service, Friendly people and hassle free
  3. 100%
    Great service affordable parts
  4. 100%
    Very knowledgeable and quick to quote parts.
    Very quick to respond to parts quotes. Knowledgeable and Polite, and very quick shipping. Definitely will purchase parts from these guys in the future.
  5. 100%
    Science I buy parts from propel parts I don’t have to spend too much down time always on time and good service
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Frequently Asked Questions

Product

What is the function of the 4N8559 Core A Rad?

This radiator core is designed to help regulate engine temperature by efficiently transferring heat from the coolant to the surrounding air. It ensures optimal cooling performance and protects the engine from overheating.

How to install this 4N8559?

Please follow the instructions below to install
1. Begin by ensuring the engine is completely cool and the system is depressurized. 
2. Drain the coolant and disconnect all hoses and fittings attached to the old radiator core. Remove the existing unit carefully, 
3. Position and secure the new core in place. 
4. Reconnect all fittings, 
5. Refill the system with coolant, and check for leaks. 
For safety and precision, professional installation is recommended.

Which models are compatible with this radiator core?

This part is compatible with various heavy-duty engines and machines, including models 3412, 3406C, 3408C, and others. Always verify compatibility using your equipment’s service manual or by matching the part number before purchasing. Check your manual or reach out to Propel Parts for help verifying fitment.

Does this radiator core meet performance standards?

Yes, this 4N8559 is designed to meet OEM specification for cooling efficiency and durability, ensuring reliable temperature control even in demanding operating conditions.

What are the signs that a radiator core needs replacement?

Common signs include frequent overheating, coolant leaks, rust buildup, or reduced engine performance. If you notice any of these issues, replacing the radiator core can help restore proper engine cooling.

What materials are used in this Core A Rad?

The core is crafted from durable, heat-resistant materials designed to maximize cooling efficiency and resist corrosion for long-lasting service life.

How can I maintain the radiator core after installation?

Take these steps to extend the lifespan of your 4N8559.
1. Regularly check coolant levels, 
2. Ensure the system is free of leaks, and flush the coolant at recommended intervals. 
3. Keeping the fins clean and unobstructed will also help maintain optimal airflow and performance.

Questions About this Part?
Have a question about fit, compatibility, shipping, warranty, or returns?

This 4N8559 Core A Rad is compatible with the following models:
3412, 3406C, 3408C & more...

Shipping

We know equipment downtime costs money, so fast and reliable shipping is a priority at Propel Parts. Orders placed on weekdays before 3:00 PM ET typically ship the same day, with expedited delivery options available for many locations when time is critical.

We ship across the U.S., Canada, and over 130 countries worldwide, helping customers keep machines running wherever they operate. Available shipping methods and delivery estimates are shown at checkout so you can select the option that best fits your timeline.

Tracking information is emailed within 24–48 hours after your order is processed, giving you full visibility from dispatch to delivery and peace of mind that your parts are on the way.

Easy Returns

Our refund policy is simple. We offer a 30-day, no-hassle return policy, and we make every effort to provide the best service and highest-quality parts possible. If you’re not fully satisfied with your purchase, you may return it within 30 days for a refund. Full details are available on our Returns Policy page.

Warranty

Buy with confidence. All parts from Propel Parts are covered against material or manufacturer defects for 12 months from the original invoice date. We stand behind every part we sell, so you can count on reliable performance and dependable support. Full details are available on our Warranty Policy page.