Worldwide Shipping
New 4J1888 Cotter Pin Replacement suitable for Caterpillar Equipment
Exact Fit Guarantee
This part is guaranteed to fit your machine.
Wrong Part?
We'll overnight correct part at no cost to you.
Secure Checkout
•
Trusted Since 2012
Details
Description for 4J1888 Cotter Pin
â–¶Specification for 4J1888 Cotter Pin
â–¶Exact Fit Guarantee for 4J1888 Cotter Pin
â–¶Reviews
Customer Reviews
Australian buyer, sales where professional and very responsive with secure parts identification.
Highly recommend.
Bedrock Exploration Pty Lt, Australia
Customer Follow-Up After Delivery:
Thank you Deb and your colleague Anthony A for your help in supplying a replacement part which arrived in good time and is running smoothly.
I shall continue to use your services and recommend you to other remote miners, as your services and delivery times are better than our home-based suppliers.
With thanks again.
Regards, Gerard
Quick Respond.
The quick respond much appreciated.
Keep this up.
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.
Been buying from them for years and have almost never had an issue. The few times I had a question or something to handle, they have shown amazing customer service. Great product and a great company.
Have been buying parts from them for years, and they have always delivered, both with parts and customer service.
To my country the company is doing great
The products they market is good and
Affordable.
They can delivery to any country, stree free.
Tested and trusted.
Great customer service.
Prompt , knowledgeable and friendly service.
La mejor experiencia y calidad
Great site and price
Great pricing and fast shipping!
I'll admit that I was skeptical of propel parts, but they are an honest site and came through with the order. I was skeptical because I've never ordered heavy machinery parts, and didn't know who to trust. The parts that I ordered showed in stock, but after checking with their vendor, they only had half of the order in stock. I was notified the day after the order, and most of the parts arrived in a few days. There was one part that was not shipped putz but I was able to talk with who I assumed is the owner who rectified the situation and had the part overnighted to me.
I will say that communication speed could use a little work, but they will eventually get back with you.
Product Questions
Frequently Asked Questions
What is the 4J1888 pin used for?
The 4J1888 pin locates and connects components, transferring load while allowing the designed movement between parts. A sound pin keeps the linkage tight and accurate.
How do I install the 4J1888 pin?
A reliable installation of the 4J1888 starts with inspection and ends with verification. Follow this process:
- Shut the machine down and support the assembly before service
- Drive or press out the old pin and inspect the bores
- Clean and check the bores for wear or ovality
- Fit the 4J1888 with the correct orientation and retention
- Confirm the joint moves correctly and is properly secured
Which Caterpillar machines is the 4J1888 compatible with?
The 4J1888 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 4J1888 pin meet performance standards?
Yes. Propel Parts supplies the 4J1888 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 4J1888 be replaced?
Replace the 4J1888 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 4J1888 pin?
Catching a failing 4J1888 early prevents wider damage. The common warning signs include:
- Play, knocking, or rattling at the joint
- Visible wear, scoring, or galling on the pin
- Misalignment of the connected parts
- A loose or backed-out retainer
Why is the 4J1888 important, and what related parts work with it?
Keeping the 4J1888 in good condition protects the components around it and supports smooth, reliable operation. Maintaining the assembly with parts that meet OEM specifications helps you avoid unplanned downtime. Related hardware on our site includes 1693104 Ring Backup and 3178766 Bearing Main.
Shipping | Returns
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.
Exact Fit Guarantee
Exact Fit Guarantee®
The right part — or we'll make it right.
Order Normally
Know your part number?
Simply place your order.
Not Sure?
Place your order, then send us your serial number before it ships.
We'll verify fit.
We Make It Right
Wrong part? We'll make it right.Fast. At our expense.