Description
SPRING PIN, THREADED
Part Number: FB656008C
Direct replacement (cross ref) for B65-6008.
Product Overview
This threaded spring pin is used in suspension assemblies to secure and support moving suspension components. It replaces OEM part B65-6008 and is commonly found in heavy-duty truck suspension systems where strength and proper fit matter.
Suspension pins handle constant movement, weight transfer, vibration, and road shock. Over time, they wear down, loosen up, or develop corrosion that creates excess play in the suspension.
What the Part Does
The spring pin acts as a pivot and mounting point inside the suspension system. It keeps components aligned simultaneously allowing controlled movement during suspension travel.
A properly fitted pin keeps the suspension stable and prevents unwanted shifting or looseness under load. These pins often work alongside suspension bushings, torque rods, and hangers.
Common Problems This Part Solves
Worn spring pins can cause:
- Clunking noises from the suspension
- Loose or wandering handling
- Uneven tire wear
- Excess movement in suspension components
- Difficulty maintaining alignment
If ignored too long, a worn pin can damage nearby bushings or mounting brackets.
Why Replacement Matters
Once a spring pin develops wear, the movement inside the suspension usually gets worse quickly. That extra play puts stress on surrounding components and can affect ride stability.
Replacing worn pins helps tighten the suspension back up and prevents more expensive repairs later.
Compatibility and Fitment
This threaded spring pin replaces OEM part number B65-6008. Always verify dimensions, thread style, and suspension application before ordering. Using the wrong pin size can create improper fitment and accelerated wear.
Installation and Service Notes
Installation usually requires removing retaining hardware and pressing or driving out the old pin. Corrosion can make removal difficult on older trucks.
During replacement, inspect nearby bushings, hangers, and suspension brackets for wear. Installing a new pin into badly worn bushings usually won’t fully solve the problem.
This component is commonly serviced alongside a Torque Rod Assembly or suspension kit during larger suspension repairs.
Use Case
Common in suspension rebuilds, alignment repairs, and fleet maintenance work on trucks showing looseness or uneven suspension wear.
About Us
We’re a family-owned group of Peterbilt dealerships dedicated to getting you the parts you need quickly and affordably. Whether you’re looking for Paccar OEM parts, reliable aftermarket replacements, or popular upgrades like seats and filters, we make it easy to keep your truck running and on the road. If you don’t see what you need online, just give us a call or send an email — chances are we can get it. We pride ourselves on fast service, fair prices, and being a partner you can depend on when downtime isn’t an option.
