FL-251704

Threaded Spring Pin
4.5 Ratings
Part # FL-251704
UPC/GTIN# 601959608738
Availability In Stock (1)
Feature Specification
Type Threaded spring pin (front suspension spring bolt pin)​
Product Application Front leaf spring suspension on Kenworth and Peterbilt trucks using 4" wide front springs​
Pin Diameter 1.062" (approx. 27 mm)​
Overall Length 7.87" total pin length​
Center-to-Center About 6.33" center-to-center between lock groove / bearing points​
Thread Size M33 / M33.5 x 4.0 metric thread (approx. 1.375" long threaded section)​
Material Hardened steel, heavy-duty threaded spring pin for truck front suspension​
Use With Bushing Designed to be used with threaded spring eye bushing MTB160 / B13-1002 family or similar​
OEM Reference Direct replacement for Paccar / Kenworth / Peterbilt B65-1008 front spring pin​

Includes (typical aftermarket configuration):

  • 1x threaded steel spring pin for front suspension, equivalent to B65-1008 (some packs sold as 2 pins)​
  • Intended for use on various Kenworth and Peterbilt models with 4" front springs, working with matching threaded spring eye bushings such as MTB160 / B13‑1002​

This Threaded Spring Pin is built as an OEM-style replacement for Paccar B65-1008 front suspension spring pins used on multiple Kenworth and Peterbilt truck models with 4" front leaf springs.​


With a 1.062" diameter, 7.87" overall length, approximately 6.33" center-to-center length, and metric M33/M33.5 x 4 thread, it is dimensioned to work with threaded spring eye bushings in heavy-duty truck front suspension systems, restoring proper alignment and helping maintain stable steering and ride quality.​


Manufactured from hardened steel and designed as a direct-fit substitute for B65‑1008 and its aftermarket equivalents, this pin is suitable for front axle suspension service where the original threaded spring pin is worn, corroded, or damaged.​

Cross Reference / Part Interchange

Manufacturer / Brand Part Number Notes
Paccar / Kenworth / Peterbilt B65-1008​  
Paccar / Peterbilt PB64-1008 / PB641008​  
Automann M5449 / AMM5449​  
Dayton Parts 327-540​  
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