New CAT 1086631 (2W3414) Plunger & Barrel Caterpillar Aftermarket for CAT 3406, 3406B, 3406C, 3412 and more
- New Plunger & Barrel Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 1086631 Plunger And Barrel
â–¶Specification for 1086631 Plunger And Barrel
â–¶Exact Fit Guarantee for 1086631 Plunger And Barrel
â–¶| Models | 3406, 3406B, 3406C, 3412 |
|---|---|
| Dimensions | 2.17x2.17x5.91 |
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I put 2 of the same orders in due to a web page error and shortly after I was contacted by Deb from customer service asking if I meant to place both orders. She was very helpful, the email was very well written and it genuinely made me feel better about the whole experience. She resolved the issue quickly and with there not being much of customer service these days I was very happy so see that is not the case everywhere!!!
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Fast response and very attentive! Thanks Deb.
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Great customer service!
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Buen servicio y atención
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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 1086631 plunger barrel used for?
The Caterpillar 1086631 plunger barrel is a high-quality aftermarket fuel system component designed for fuel injection pump applications in Caterpillar engines. It is manufactured to meet or exceed OEM specifications for dependable fuel delivery and long-lasting engine performance.
What are the benefits of the 1086631 plunger barrel?
- Supports accurate fuel injection performance
- Helps maintain dependable engine combustion
- Manufactured from durable materials for long service life
- Designed to meet or exceed OEM specifications
- Suitable for demanding heavy-duty engine applications
Is the 1086631 plunger barrel compatible with multiple Caterpillar engines?
Yes, this plunger barrel may fit Caterpillar 3406, 3406B, 3406C, 3412, and related engine applications depending on fuel system configuration. Check your manual or reach out to Propel Parts for help verifying fitment.
Why is replacing worn fuel injection components important?
Replacing worn fuel injection components helps maintain proper fuel delivery, support efficient combustion, and reduce unnecessary wear on engine systems.
Does the 1086631 plunger barrel meet OEM standards?
Yes, this aftermarket replacement is designed to meet or exceed OEM specifications for fit, durability, and dependable fuel system performance.
Can a damaged plunger barrel affect engine performance?
Yes. A worn or damaged plunger barrel may contribute to fuel delivery problems, rough engine operation, reduced fuel efficiency, and increased maintenance needs.
Are related Caterpillar fuel system components available from Propel Parts?
Yes. Propel Parts carries a wide range of fuel injection and engine replacement components for Caterpillar equipment. You can also explore the Caterpillar 3400 Nozzle 7N9843 for another related fuel system replacement option.
This 1086631 Plunger And Barrel is compatible with the following models:
3406, 3406B, 3406C, 3412 & 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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