50mm Bolt In King Pin With Bolts
50mm Bolt In King Pin With Bolts
$225.00
50mm bolt in king pin with bolts for trailer fifth wheel and skid plate service, using an 8 hole M14 mounting pattern for bolt in replacement work on B-double and road train trailer applications.
Part number KZC101201BO.
Description
Overview
50mm bolt in king pin with bolts replaces the trailer fifth wheel king pin where a bolt in 2″ setup is required. It suits trailer skid plate service where the old king pin has worn past service limits, or where the trailer needs a removable bolt in replacement rather than a welded repair.
Features
- 50mm bolt in king pin for 2″ fifth wheel coupling applications.
- Includes bolts for the bolt in king pin installation.
- Uses an 8 hole M14 mounting pattern for matching skid plate assemblies.
- Suitable for heavy trailer applications including B-double and road train work when matched to the correct setup.
Specifications and Materials
This JOST king pin uses a 2″ pin diameter with an 8 × M14 bolt pattern. The matching bolt torque callout for the KZ1008 to KZ1012 family is 190 ± 10 Nm, so confirm the trailer plate and installation requirements before fitting.
Part number: KZC101201BO.
See the JOST king pin technical sheet for the 50mm KZ1008 to KZ1012 family.
Compatibility and Fitment
Match this part to the trailer skid plate thickness, bolt pattern and fifth wheel king pin style before ordering. Because retention plate requirements change with skid plate thickness, check the existing plate and bolt arrangement before replacing the pin.
Related Parts
Check the related service parts below against the trailer setup before ordering.
| Use | Part number | Part type |
|---|---|---|
| Replacement component | KZE101203 | Self securing bolt |
| Retention plate to suit 8mm skid plate | KZ100802 | Retention plate |
| Retention plate to suit 10mm skid plate | KZ101002 | Retention plate |
| Retention plate to suit 12mm skid plate | KZ101202 | Retention plate |
| Retention plate to suit 16mm skid plate | KZ101206 | Retention plate |
| Replacement bolt kit | KZ1012-006 | Bolt kit |
Compliance and Safety
Inspect the fifth wheel lock, skid plate and king pin mounting area before fitting. After installation, reset and test the fifth wheel locking mechanism, then recheck the fasteners after the trailer has returned to service.
Trailer Applications
Workshops fit a 50mm bolt in king pin when servicing semi-trailers, B-double trailers and road train rated trailer combinations with a matching 2″ fifth wheel coupling. For worn or damaged units, compare the old pin, plate thickness and bolt layout before changing parts.
Why Choose ICS Trailers
ICS Trailers supplies trailer coupling and fifth wheel service parts for transport operators, repairers and fleets that need parts matched to the job, not guessed from a photo. View more Tow Couplings from ICS Trailers
Online prices apply to website orders only. In-store pricing may differ.






