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Trunnion Nut for Mack 4" Spring SS50, 5" Spring SS58 - Replaces 25QJ220BP2

Trunnion Nut for Mack 4" Spring SS50, 5" Spring SS58 - Replaces 25QJ220BP2

SKU: F174056

Availability: In Stock

Stock Level: Only 37 left in stock - Order Soon!

Shipping: Calculated at Checkout

Regular price $31.28 USD
Regular price Sale price $31.28 USD
Sale Sold out
Shipping calculated at checkout.

About this Item

  • Very Important: Please Verify this product Description and Compatibility before Buying
  • Compatible with Mack Rear Suspension 4" Spring SS50 Camelback, 5" Spring SS58 Camelback Series Trucks
  • Built on High Strength Materials to ensure long term reliability
  • Exceeds OEM quality standards
  • Replacement for Mack 25QJ220BP2 Trunnion Nut


Optimize the stability and functionality of your Mack truck's rear suspension with the Fortpro Trunnion Nut. Tailored for compatibility with Mack 4" Spring SS50 Camelback and 5" Spring SS58 Camelback Rear Suspension Series Trucks, this trunnion nut seamlessly replaces OEM part 25QJ220BP2. Crafted with precision engineering, the trunnion nut plays a pivotal role in maintaining the integrity of the suspension system and providing a secure connection. Upgrade your Mack truck with Fortpro Trunnion Nut and experience the assurance of a dependable ride.


  • Brand: Fortpro
  • Vehicle Type: Semi-Trucks / Heavy Trucks
  • Product Department: Suspension
  • Product category : Rear Suspension
  • Part Type : Trunnion Nut
  • OEM Reference #: 25QJ220BP2
  • Outside Diameter (O.D): 6.00 in.
  • Inside Diameter (ID): 3 7/8 in.
  • Thickness: 1.180 in.
  • Hole Distancing: 4 3/4 in.
  • Hole Diameter: 3/8 in.
  • Thread Size: 3 7/8 in. x 12 TPI
  • Material: Steel
  • Applications:
    Mack Rear Suspension 4" Spring SS50 Camelback
    Mack Rear Suspension 5" Spring SS58 Camelback
    Mack Mack 46.000 / 55.000 Lbs Camelback Rear Suspension


  • Automann: MX404
  • Dayton Parts: 334-498
  • Euclid: E-5424
  • Mack: 25QJ220BP2
  • Meritor: R305424
  • PAI: FNU4741, FNU4743

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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