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Trunnion Cap for Mack 4" Spring SS44/SWS573 & SW/SWW - Replaces 97QL399P2

Trunnion Cap for Mack 4" Spring SS44/SWS573 & SW/SWW - Replaces 97QL399P2

SKU: F174010

Availability: In Stock

Stock Level: Only 6 left in stock - Order Soon!

Shipping: Calculated at Checkout

Regular price $17.91 USD
Regular price Sale price $17.91 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 4" Spring SS44/SWS573 Camelback Suspensions & SW/SWW Walking Beam Series Trucks
  • Built on High Strength Materials to ensure long term reliability
  • Exceeds OEM quality standards
  • Replacement for Mack 97QL399P2 Trunnion Cap


Upgrade your Mack truck's suspension to unparalleled levels with the Fortpro Trunnion Cap. Precision-engineered for Mack 4" Spring SS44/SWS573 Camelback Rear Suspensions & SW/SWW Walking Beam Series Trucks, this cap seamlessly replaces OEM part 97QL399P2, ensuring a perfect fit and contributing to enhanced stability on the road. Crafted for durability and performance, Fortpro's Trunnion Cap is more than an upgrade – it's a commitment to reliability and innovation. Elevate your driving experience, choose Fortpro for engineering excellence, and ensure your Mack truck rides with unmatched confidence.


  • Brand: Fortpro
  • Vehicle Type: Semi-Trucks / Heavy Trucks
  • Product Department: Suspension
  • Product category : Rear Suspension
  • Part Type : Trunnion Cap
  • OEM Reference #: 97QL399P2
  • Outside Diameter (O.D): 7 5/8 in.
  • Mounting Holes: 6
  • Holes Diameter: 11/32 in.
  • Holes Equal Spacing: 60 Degrees
  • Threaded Hole: 1/8 in. x 27 NPT
  • Applications:
    Mack Rear 4" Spring SS44/SWS573 Camelback Suspensions
    Mack SW/SWW Walking Beam Series Trucks


  • Automann: M1158
  • Dayton Parts: 334-468
  • Euclid: E-3697
  • Mack: 97QL399P2
  • Meritor: R303697
  • PAI: FCP4749

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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