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Cummins 4B 3.9L, 6B 5.9L, 4B 4.5L Lower Connecting Rod Bearing, New (3939380)

โ€“ Replace Part Number: 3939380, CUM3939380, M-3929037
โ€“ Fit for: Cummins 4B 3.9L, 6B 5.9L, 4B 4.5L engines
โ€“ Built to OEM specs for a proper fit
โ€“ Send us an inquiry for price

Engine Serial Number (ESN) โ€” Have your engine serial number? Enter it here. We can use it to help review whether this part matches your engine.
SKU: P0263896
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Hassle-free 30-day return policy for a risk-free shopping experience.

3 Months Warranty

Enjoy 3-month warranty, ensuring long-lasting reliability and peace of mind.

2-7 Days Fast Delivery

Receive your order within 2 to 7 days, ensuring fast and reliable delivery.

24/7 Service

Round-the-clock support to assist you whenever you need it.

  • 30-Day Money Back
  • 2-7 Days Fast Delivery
  • 6 Months Warranty
  • 24/7 Service

Product Details

When it comes to Lower Connecting Rod Bearings, why risk your engine?

Don’t let a small part turn into a major repair. We wouldn’t risk putting sub-par parts into our engines, so why should you?
4BTdiesel only sells Lower Connecting Rod Bearing for Cummins B Series that are manufactured in a state of the art facility using top of the line machining and measuring equipment to ensure each part is manufactured to OEM specifications. Combine this with up to 50% off OEM prices, an industry leading 6-month warranty and technical expertise from 4BTdiesel’s certified staff, and you’ve got a quality Lower Connecting Rod Bearing that will keep you running for another million miles.
Need a little extra proof? Let’s talk shop.

  • Save your money, boost your engines power and performance. When you buy from 4BTdiesel you can have your cake and eat it too!
  • This part is not only easy on the wallet, but it provides equal or better quality compared to the OE.
  • Manufacture and assembly of these Lower Connecting Rod Bearings in an ISO 9001: 2008 certified facility ensures quality of workmanship and consistency of that quality over time.
  • This is a fracture split type connecting rod bearing.
  • Made of tri-metal construction for long lasting strength and durability.
  • Additionally, this rod bearing is tin plated for improved scuffing resistance.

Contents

  • (1) Lower Connecting Rod Bearing

Warranty

6-month warranty.

Brand4BTdiesel
Compatible BrandFor CUMMINS
Compatible Engine BrandFor CUMMINS
Replacement Part NumberCUM3939380, M-3929037, M3929037
ConditionNew

Shipping Spec

Weight0.907 kg
Dimensions12.7 × 12.7 × 12.7 cm

โ€“ Replace Part Number: 3939380, CUM3939380, M-3929037
โ€“ Fit for: Cummins 4B 3.9L, 6B 5.9L, 4B 4.5L engines
โ€“ Built to OEM specs for a proper fit
โ€“ Send us an inquiry for price

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Warranty

For new Cummins parts, we provide 90-day warranty. Quality is our commitment. 4BTDiesel ensures your peace of mind! For complete warranty details, please view our Warranty Policy.

Shipping

We ship worldwide and offer full expedited delivery to ensure your construction machinery back in action, fast. Check out our Shipping Policyย for more details.

Easy Return

We prioritize your satisfaction. If your order doesn't meet your expectations within 90 days, you may be eligible for a refund. See our Easy Return Policy for details.