Braking · RAM chassis cab
RAM 4500 / 5500 ABS Hydraulic Control Unit
The chassis cab runs its own hydraulic control unit. It looks like the pickup part, it is ordered like the pickup part, and it is not the pickup part.
What the factory part looks like right now
The 4500 / 5500 chassis-cab unit has its own single supersession: 68195569AA is superseded by 68195569AB. It is held separate from the pickup family deliberately.
Why this chain is never crossed with the pickup chain
Cross-platform substitution between 68143491 and 68195569 is a refuted path in the record, not an untested option. A chassis-cab truck fitted with a pickup unit leaves the truck unsafe and out of service.
Before ordering or installing, confirm
Confirm before you commit
The platform, from the VIN
4500 or 5500 chassis cab only.
Scan-tool access, before the part arrives
Programming and an ABS bleed are required after replacement.
What this record does not cover
Not covered by the record
The corpus holds no rebuild or exchange provider specifically for the chassis-cab unit, and no diagnostic code evidence. Programming detail is a stated gap, as it is on the pickup chain.
Check this against your vehicle
Start with the number you have and we'll show what's on record for it, including anything documented as an alternative.
This page explains the documented repair paths. The investigation helps determine which of those best matches your specific vehicle and circumstances.
Keep going
- RAM 2500/3500 ABS unit68143491AA on national backorder: the factory supersession, the platform boundary that costs a cycle, and the rebuild path fleets actually use.
- RAM ABS moduleThe ABS control module supersedes AA to AB to AC, and it is a different component from the hydraulic unit. Replacing one will not fix the other.
- RAM ABS part numbers68143491, 68195569 and 68347098 split by platform — plus the three Mopar numbers whose application has not been established.
Everything on this page comes from a documented investigation record. Where the record is silent, the page says so rather than filling the gap. Always confirm fitment, application, and any programming requirement for your specific vehicle before installing.