New CAT 8N3176 Nozzle Caterpillar Aftermarket for Caterpillar
- New Nozzle Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 8N3176 Nozzle
â–¶Specification for 8N3176 Nozzle
â–¶Exact Fit Guarantee for 8N3176 Nozzle
â–¶| Models | D343, D346 |
|---|---|
| Dimensions | 6.30x6.30x5.91 |
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Frequently Asked Questions
What is the 8N3176 fuel-system component used for?
The 8N3176 is a fuel-system component that controls how fuel is injected, directly affecting combustion quality, efficiency, and emissions.
How do I install the 8N3176 fuel-system component?
A reliable installation of the 8N3176 starts with inspection and ends with verification. Follow this process:
- Shut down, cool, and relieve fuel-system pressure safely
- Remove the component and clean the seat and bore
- Inspect tip, seat, and sealing surfaces for wear or carbon
- Fit the 8N3176 with new seals and correct orientation
- Torque to spec, bleed the system, and check for leaks
Which Caterpillar machines is the 8N3176 compatible with?
Fitment for the 8N3176 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 8N3176 fuel-system component meet performance standards?
Yes. The 8N3176 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 8N3176 be replaced?
Plan to replace the 8N3176 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 8N3176 fuel-system component?
Catching a failing 8N3176 early prevents wider damage. The common warning signs include:
- Rough running, misfire, or hard starting
- Smoke or poor fuel economy
- Knocking or uneven power
- Fuel leaks or carbon build-up on inspection
Why is the 8N3176 important, and what related parts work with it?
Keeping the 8N3176 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 5J4988 Seal Assembly and 1F3278 Fitting.
This 8N3176 Nozzle is compatible with the following models:
D343, D346 & 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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