New 3B4618 Cotter Pin Replacement suitable for Caterpillar Equipment
- New Cotter Pin Replacement suitable for Caterpillar Equipment
- Made to USA Specification
Buy with Confidence: All parts are covered by our warranty
Exact Fit Guarantee
This part is guaranteed to fit your machine.
Wrong Part?
We'll overnight correct part at no cost to you.
Description for 3B4618 Cotter Pin
â–¶Specification for 3B4618 Cotter Pin
â–¶Exact Fit Guarantee for 3B4618 Cotter Pin
â–¶| Dimensions | 1.77x1.77x0.08 |
|---|
-
prompt clear replies
-
Very prompt services !
-
BEST for Heavy Equipment Parts.
Awesome quality products! Better customer service! Steven is always a pleasure to work with and very prompt in assisting me - thank you! -
Online order.
I had a good experience this morning I placed an online order and everything went smoothly. The staff at propel parts has always been helpful in the past when I have been looking for harder to find parts or something that wasn’t listed online. -
Awesome service prices and quality parts
Frequently Asked Questions
What is the 3B4618 pin used for?
The 3B4618 is a pin used to join or align components, carrying shear load and maintaining correct positioning in the assembly.
How do I install the 3B4618 pin?
A reliable installation of the 3B4618 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 3B4618 with the correct orientation and retention
- Confirm the joint moves correctly and is properly secured
Which Caterpillar machines is the 3B4618 compatible with?
Fitment for the 3B4618 depends on your specific Caterpillar model and the assembly it serves, so confirm the application before you order. Please reach out to Propel Parts for help verifying fitment.
Does the 3B4618 pin meet performance standards?
Yes. The 3B4618 is manufactured to meet OEM specifications for tolerance and material quality. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications for dependable, long-term performance.
How often should the 3B4618 be replaced?
Plan to replace the 3B4618 during a rebuild of the surrounding components, or sooner if inspection shows it is past its serviceable limit.
What are the signs of a worn or failing 3B4618 pin?
Catching a failing 3B4618 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 3B4618 important, and what related parts work with it?
Keeping the 3B4618 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 9R0139 Bearing Sleeve.

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.

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.

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®
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.
Worldwide Shipping




































































