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New 1559504 Insert-Int Replacement suitable for Caterpillar Equipment
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Description for 1559504 Engine Valve Seat Insert
â–¶Specification for 1559504 Engine Valve Seat Insert
â–¶Exact Fit Guarantee for 1559504 Engine Valve Seat Insert
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Customer Reviews
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The prices are very good! The customer service is excellant! I had to contact them because our tax info wasn't right and they refunded it on the spot! Great job! we will be doing a lot more ordering from thi company. Highly recommended!
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Excellent service and quick response!
Satisfied Customer.
I made my first purchase from Propel Parts last week. I was very happy with the response time and the delivery was fast, fast, fast! Also, the quality of the product is superb and at a great low price.
Keep up the great work!
Great customer service
Anthony was very professional and on top of what needed to be done to get my order verified and moving forward.
Excellent experience.
Mike has been very helpful. I am looking forward to keep doing business with them
I would give 5 stars but my first time ordering from here and using aftermarket parts. The price is reasonable comparing to original Cat parts and the customer support is great and hoping to do more business with them
Great prices prompt courteous customer service and fast shipping.
Everything fine, thank you. The only thing with which I had a problem in your Software, is that when I have more than 10 different items on the list, I can't scroll to the first ones. But besides that, I am very happy in going on with buying your parts.
Very prompt services !
Product Questions
Frequently Asked Questions
What is the 1559504 cylinder liner used for?
The 1559504 cylinder liner forms the bore the piston rides in, providing a hard, true wearing surface and helping transfer combustion heat. A sound liner is central to engine sealing and life.
How do I install the 1559504 cylinder liner?
Fitting the 1559504 correctly comes down to clean surfaces and following the manual sequence. Work through these steps:
- Shut down, cool, and follow engine service procedures
- Remove the old liner and clean the block bore
- Inspect the bore, counterbore, and seal areas
- Fit the 1559504 with new seals and the correct protrusion
- Verify protrusion and seating before completing assembly
Which Caterpillar machines is the 1559504 compatible with?
The 1559504 is matched to particular Caterpillar equipment, so always verify the application against your parts reference before purchasing. Please reach out to Propel Parts for help verifying fitment.
Does the 1559504 cylinder liner meet performance standards?
Yes. Propel Parts supplies the 1559504 as a premium aftermarket part made to meet OEM specifications. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications so you can fit it with confidence.
How often should the 1559504 be replaced?
Replace the 1559504 whenever the assembly it serves is overhauled, or any time it shows wear, damage, or corrosion. Following the intervals in your service manual is the best guide.
What are the signs of a worn or failing 1559504 cylinder liner?
When the 1559504 reaches the end of its service life, the symptoms tend to show up first as performance or wear issues. Look for:
- Coolant or oil leaks around the liner
- Loss of compression or blow-by
- Scoring or excessive bore wear
- Cavitation pitting on the liner wall
Why is the 1559504 important, and what related parts work with it?
Replacing the 1559504 when needed keeps the system within its designed clearances and loads, which extends the life of the surrounding parts and supports dependable performance. Related hardware on our site includes 6V8399 Seal and 8G2194 Ring.
Compatible Models
This 1559504 Engine Valve Seat Insert is compatible with the following models:
3126, 3126B, 3126E, 120H, 135H, 322C, 322C FM, 325C, 325C FM, 561N, 570B, 580B, 938G II, 950G II, 953C, 962G II, 963C, C7, D5N, D6N, IT38G II, IT62G II, M325C MH & more...
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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.
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