8T4131 Nut Replacement suitable for Caterpillar Equipment
- New Nut Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 8T4131 Hex Nut
▶Specification for 8T4131 Hex Nut
▶Exact Fit Guarantee for 8T4131 Hex Nut
▶| Models | D6N, D6N LGP & more |
|---|---|
| Dimensions | 1.30x1.30x0.59 |
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At the beginning, I experienced significant delays and communication issues regarding my order, which honestly caused serious concern because the parts were urgently needed for an important project.
However, after continuous follow-up, the Propel Parts team handled the matter professionally, provided shipment tracking, and the parts finally arrived successfully.
I especially appreciate their willingness to communicate, acknowledge the issue, and continue working toward resolving the situation.
In international business, delays can sometimes happen, but what matters is the final commitment to resolving the issue properly.
Thank you to Daniel and the team, and hopefully future transactions will be smoother for both sides. -
Placed an order twice and immediately resolved!
Misty reched out immediately because I accidentally placed an order twice. Fantastic service. -
Great company with outstanding customer service. Always get answers to my questions and always get my order to me quickly!
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Excellent and prompt response.
Propel parts team helped me greatly regarding a special request and I always get prompt response.
They’re fantastic! -
Great service at an affordable price to get my machine back going.
Frequently Asked Questions
What is the 8T4131 nut used for?
The 8T4131 is a nut that pairs with a bolt or stud to clamp components together and resist loosening under load.
How do I install the 8T4131 nut?
Fitting the 8T4131 correctly comes down to clean surfaces and following the manual’s sequence. Work through these steps:
- Shut the machine down and isolate power before service
- Clean the threads on the stud or bolt and inspect them
- Thread the 8T4131 on by hand to confirm it runs freely
- Tighten to the specified torque in the correct sequence
- Re-check the torque after the first operating cycle if advised
Which Caterpillar machines is the 8T4131 compatible with?
Fitment for the 8T4131 depends on your specific Caterpillar model and the assembly it serves, so confirm the application before you order. Check your manual or reach out to Propel Parts for help verifying fitment.
Does the 8T4131 nut meet performance standards?
Yes. The 8T4131 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 8T4131 be replaced?
Plan to replace the 8T4131 during a rebuild of the surrounding components, or sooner if inspection shows it is past its serviceable limit. This part is commonly replaced alongside the 5A3187 Bolt Track, so it is worth checking both while the assembly is open.
What are the signs of a worn or failing 8T4131 nut?
When the 8T4131 reaches the end of its service life, the symptoms tend to show up first as performance or wear issues. Look for:
- A loosening joint or lost torque
- Rounded, stripped, or corroded threads
- A nut that won’t hold position under vibration
- Damage to the mating washer or surface
Why is the 8T4131 nut important, and what related part is commonly replaced with it?
Replacing the 8T4131 when needed keeps the system within its designed clearances and loads, which extends the life of the surrounding parts and supports dependable performance. The 1768464 Shim is commonly serviced together with this part, so it is worth replacing both while access is available.
This 8T4131 Hex Nut is compatible with the following models:
D6N, D6N LGP & more...

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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.
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