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Fortpro

Repair Sleeve for Cummins 4B / 6B / ISB / QSB Engines - Replaces 3904166

Repair Sleeve for Cummins 4B / 6B / ISB / QSB Engines - Replaces 3904166

SKU: F020628

Availability: Out of stock

$13.85 USD
$13.85 USD
Sale Sold out
Shipping calculated at checkout.

Important things to Consider

CHECK COMPATIBILITY: Ensure that your OEM part number matches the one in our cross-reference list before making a purchase.

PREVENT UNNECESSARY RETURNS: Don’t rely on appearance alone. Always confirm compatibility by verifying part numbers, not just how the part looks.

TRUCK BRAND MENTION DOES NOT GUARANTEE FIT: If we reference a specific truck brand, it doesn’t imply compatibility with all models. Double-check model specifics to avoid any mismatch.

Shipping Policy

In order to send your purchase, our company may use different freight companies like USPS, UPS and some 3erd Carrier Services for Oversize orders, this will not affect the final price of your order. We will send you all the information in due time. 

For Free Shipping and Freight/Oversize Shipments they are some special term you may check at our Terms & Conditions page.

 

Return Policy

If for any reason you need to return a purchased item, we have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must met the conditions stablished in our Terms & Conditions.

To start a return, you can contact us at admin@maxitrucks.com. 

About this Item

  • Provides a smooth, wear-resistant combustion surface for the pistons, optimizing engine efficiency.
  • Improves engine life by reducing wear and internal friction.
  • Designed for Cummins 4B, 6B, ISB and QSB engines, ensuring a precise fit.
  • Made with high quality materials that withstand high temperatures and extreme pressures.
  • Replaces OEM reference 3904166, guaranteeing precision and compatibility
View full details

Fortpro Repair Sleeve for Cummins 4B, 6B, ISB and QSB engines is a robust and reliable solution to keep your engine in optimal condition. The Sleeve, which replaces OEM reference 3904166, is designed to provide a smooth, wear-resistant combustion surface for the pistons, significantly improving engine efficiency and durability. Manufactured with high quality materials, it is capable of withstanding the most extreme operating conditions, including high temperatures and pressures. Ensures excellent tightness and minimizes engine downtime.


Fortpro is a trusted leader in the development and manufacturing of premium-quality truck parts designed to meet the demands of semi-trucks and heavy-duty trucks. Renowned for innovation, durability, and reliability, Fortpro products are engineered to enhance performance, safety, and efficiency across a wide range of trucking applications.

Whether you're seeking OEM replacement parts or upgrades, Fortpro provides a diverse selection of components backed by a global reputation for quality and innovation. Trust Fortpro for the parts you need to keep your vehicles on the road longer and stronger.

  • Brand: Fortpro
  • Vehicle Type: Semi-Trucks / Heavy Trucks
  • Product Department: Engine
  • Product category : Cummins Parts
  • Part Type: Repair Sleeve / Cylinder Liner
  • OEM Reference #: 3904166
  • Material: Metal Alloy
  • Outside Diameter (O.D): 4.117 in.
  • Inside Diameter (ID): 4.015 in.
  • Length: 7.874 in.
  • Applications:
    Cummins 4B Series Engines
    Cummins 6B Series Engines
    Cummins ISB Series Engines
    Cummins QSB Series Engines
  • Cummins: 3904166
  • PAI: 161630
Dimensions Not Available.