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

Buy with Confidence: All parts are covered by our warranty

$71.96
In Stock • Ships Today • Order By 3pm ET
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SKU
1086631CTP
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Description for 1086631 Plunger And Barrel

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This aftermarket Caterpillar 1086631 Plunger And Barrel is built to meet U.S. OEM specifications for durability and performance. At Propel Parts, we perform strict quality checks to ensure it fits and functions like your original Caterpillar Plunger And Barrel.
Direct Replacement: Engineered for a precise fit in Caterpillar equipment.
OEM-Spec Quality: Manufactured to match the performance of your original part.
Tested Reliability: Strict quality checks are performed before shipping.

Specification for 1086631 Plunger And Barrel

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Replacement Part Number(s): 108-6631, 2W3414
Specifications: Aftermarket Part | US OEM Specs.
Shipping: Same Day (Weekdays) | Order by 3pm.
Warranty: Unlimited Mileage | 1 Year Warranty.
Core: No Core Required | No Core Charge.
Weight: 0.83 LBS | 0.38 KG
Dimensions: 2.17 x 2.17 x 5.91 (inches)
Condition: New

Exact Fit Guarantee for 1086631 Plunger And Barrel

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Looking for a reliable replacement Caterpillar 1086631 Plunger And Barrel ? Order with confidence through our Exact Fit Guarantee.
Verified Fit: Before we ship, we check your part against CAT SIS (Caterpillar Service Information System) to confirm it's the correct match for your machine.
Peace of Mind: If it isn't the right fit, we'll contact you with the correct Caterpillar part number before your order goes out.
Exclusive Guarantee: Enroll in our Exact Fit Guarantee at checkout to ensure you get the part you need the first time.
More Information
Models 3406, 3406B, 3406C, 3412
Dimensions 2.17x2.17x5.91
Customer Reviews
  1. 100%
    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!!!
  2. 100%
    Fast response and very attentive! Thanks Deb.
  3. 100%
    Great customer service!
  4. 100%
    Buen servicio y atención
  5. 100%
    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
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Frequently Asked Questions

Product

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.

Questions About this Part?
Have a question about fit, compatibility, shipping, warranty, or returns?

This 1086631 Plunger And Barrel is compatible with the following models:
3406, 3406B, 3406C, 3412 & more...

Shipping

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.

Easy Returns

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.

Warranty

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.

Exact Fit Guarantee®

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