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Fortpro Intake Valve Guide Compatible with Cummins 4B/6B Engines - Replaces 3904408 | F020606

Fortpro Intake Valve Guide Compatible with Cummins 4B/6B Engines - Replaces 3904408 | F020606

SKU: F020606

Availability: In Stock

Stock Level: More than 50 available.

Shipping: Calculated at Checkout

Regular price $1.33 USD
Regular price $1.92 USD Sale price $1.33 USD
Sale Sold out
Shipping calculated at checkout.

About this Item

  • Ensures that the intake valve moves in a precise and controlled manner within the cylinder, which is vital for efficient engine operation.
  • Helps dissipate heat generated during the combustion process, keeping the valve and valve seat at safe operating temperatures.
  • Minimizes contact and wear between the intake valve and valve seat, extending the life of both components.
  • Manufactured to strict tolerances to ensure perfect fit and efficient operation.
  • Directly replaces OEM 3904408 intake valve guide, meeting or exceeding original specifications.


Ensure optimal performance and long life of your Cummins engine with the Fortpro Intake Valve Guide. Designed specifically for Cummins 4B and 6B engines, this intake valve guide ensures precise guidance and efficient heat dissipation, protecting your engine from wear and overheating. Manufactured from high quality materials and with millimeter precision, this intake valve guide is a direct replacement for OEM 3904408, ensuring a perfect fit and superior performance. With Fortpro, you get durability, strength and unparalleled efficiency.


  • Brand: Fortpro
  • Vehicle Type: Semi-Trucks / Heavy Trucks
  • Product Department: Engine
  • Product category : Cummins Parts
  • Part Type: Intake Valve Guide / Valve Stem Guide
  • OEM Reference #: 3904408
  • Length: 2.382 in. / 60.50 mm
  • Inside Diameter (ID): 0.3162 in.
  • Outside Diameter (O.D): 0.5525 in.
  • Material: Steel Alloy
  • Applications:
    Cummins 4B Series Engine
    Cummins 6B Series Engine


  • Cummins: 3904408
  • PAI: 192039

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


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