New 7N9803 Pin, Piston Replacement suitable for Caterpillar Equipment
- New Pin, Piston Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 7N9803 Pin
â–¶Specification for 7N9803 Pin
â–¶Exact Fit Guarantee for 7N9803 Pin
▶| Models | 1140, 1145, 1150, 3204, 3208Â |
|---|---|
| Dimensions | 1.97x1.97x3.74 |
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When I had questions, they were answered quickly and kindly.
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Prompt , knowledgeable and friendly service. -
Great service They respond back very fast always try…
They respond back very fast always try there best to get what I need
Very friendly
Prices are reasonable
If there is a problem they fix it
Been working with them 4 years and hopefully many more
Frequently Asked Questions
What is the Caterpillar 7N9803 piston pin used for?
The 7N9803 piston pin is designed to connect the piston to the connecting rod in Caterpillar engine assemblies, helping support smooth piston movement and reliable engine operation.
What are the benefits of using a high-quality piston pin?
- Helps maintain proper piston alignment
- Supports smooth engine movement and combustion efficiency
- Reduces excessive wear between moving engine components
What are common signs that a piston pin should be replaced?
Signs may include engine knocking noise, excessive vibration, uneven wear, reduced engine performance, or abnormal movement inside the piston assembly.
Why is piston pin condition important in diesel engines?
A properly functioning piston pin helps maintain stable piston movement, improves engine reliability, and reduces stress on surrounding internal components.
Is the 7N9803 piston pin compatible with multiple Caterpillar engines?
Compatibility depends on the engine arrangement and serial number. Check your manual or reach out to Propel Parts for help verifying fitment.
Are aftermarket piston pins dependable?
Yes. High-quality aftermarket piston pins that meet or exceed OEM specifications provide reliable durability and performance in demanding engine applications.
Are related piston components commonly replaced together?
Yes, products such as the Caterpillar 1646556PK piston kit are commonly replaced alongside piston pins during engine rebuilds and maintenance.
This 7N9803 Pin is compatible with the following models:
1140, 1145, 1150, 3204, 3208Â & 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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