New 5P7128 Bolt Replacement suitable for Caterpillar 3306, 3408, 3408C, 3408E, 3412, 3516, 3516B, 3524B, C32,
- New Bolt Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 5P7128 Special Head & End Bolts
▶Specification for 5P7128 Special Head & End Bolts
▶Exact Fit Guarantee for 5P7128 Special Head & End Bolts
▶| Models | 3306, 3408, 3408C, 3408E, 3412, 3516, 3516B, 3524B, C32 & more |
|---|---|
| Dimensions | 2.17x0.63x0.63 |
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The Double Order Catastrophe
My co-worker placed an order and wasn't sure it went through online. I later placed the same order thinking the previous order didn't go through. To my surprise both orders went through, and I needed to cancel one of the orders. I called and spoke with someone who instructed me someone would contact me about the situation. I was contacted by Misty and she said she would do her best to cancel one of the orders but not sure if she could because they were next day orders. A small tome later I received an email saying she was able to cancel one of the orders. Thank you to Misty and the entire Propel Parts Team. Greatly appreciated!! -
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. -
Very helpful. Every question or request I had was answered quickly. I didn't have a parts book for my excavator but that was no problem for them. If you need parts for your Cat, give them a shot.
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Great site and price
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Will definitely use regularly!
Shipped the exact product we were looking for. Prompt Customer Service. Seamless cross-border shipping
Frequently Asked Questions
What is the Caterpillar 5P7128 bolt used for?
The Caterpillar 5P7128 bolt is a high-quality aftermarket fastening component designed for use in several Caterpillar engine applications. It is engineered to meet or exceed OEM specifications for strength, durability, and reliable fastening performance.
What are the benefits of the 5P7128 bolt?
A2.
- Provides secure fastening for critical engine assemblies
- Manufactured from durable materials for heavy-duty use
- Helps maintain equipment stability and reliability
- Designed to meet or exceed OEM specifications
- Suitable for demanding Caterpillar engine environments
Which Caterpillar engines may use the 5P7128 bolt?
This bolt may be compatible with Caterpillar 3306, 3408, 3408C, 3408E, 3412, 3516, 3516B, 3524B, and C32 engines depending on the application. Check your manual or reach out to Propel Parts for help verifying fitment.
Can worn engine bolts create performance issues?
Yes. Damaged or weakened bolts can lead to loose assemblies, vibration issues, and uneven pressure on connected components, potentially causing premature wear or failure.
Does the 5P7128 bolt meet OEM standards?
Yes, this aftermarket replacement is manufactured to meet or exceed OEM specifications for fit, performance, and durability in heavy-duty engine applications.
Are related Caterpillar fastening components available at Propel Parts?
Yes. Propel Parts offers a range of replacement bolts, caps, and hardware components. You can also check the CAT Cap A 7E6508 for another related replacement part.
Why is replacing worn fastening hardware important?
Replacing worn fastening hardware helps maintain proper assembly alignment, reduces the risk of vibration-related damage, and supports long-term equipment reliability.
This 5P7128 Special Head & End Bolts is compatible with the following models:
3306, 3408, 3408C, 3408E, 3412, 3516, 3516B, 3524B, C32 & more...

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.
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