# Service bulletin KC\-2166

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10210032
- Published by NHTSA: 2022\-04\-06
- Manufacturer's number: KC\-2166
- Manufacturer's date: 2022\-03\-31
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Mack MMD Models \- Coolant Hose Obstructs Access To Oil Filter

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10210032-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10210032-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2020 to 2022 MACK MD

## Other bulletins for the same vehicles and component

- [CBR 2128\-7 202601](/bulletins/11028033.md), 2026-02-03, Service bulletin: ENGINE; ELECTRICAL SYSTEM. CBR \- Engine Control Module \(EMS\) Software Information \- Improvement List \(Change Log\), US21\+OBD2021 Emissions ONLY
- [CBR 2107\-22 202601](/bulletins/11028032.md), 2026-02-02, Service bulletin: ENGINE. CBR \- Mack DEF Level \(UQLS\) Sensor Troubleshooting Guide \- US17\+OBD16 Emissions to US22\+OBD2023 \(DOES NOT APPLY TO AN\(4\) and PR\(4\)\).
- [CBR 2107\-21 202505](/bulletins/11018813.md), 2025-06-02, Service bulletin: FUEL/PROPULSION SYSTEM; ENGINE. Mack DEF Level \(UQLS\) Sensor Troubleshooting Guide \- US17\+OBD16 Emissions and Newer
- [CBR\-561 202503](/bulletins/11016342.md), 2025-04-02, Service bulletin: ENGINE. If oil dilution is suspected refer to the applicable CBR solution below: ∙ CBR\-659􀁡Mack Chassis \- Oil Diluted With Fuel; Fuel In Oil, Diagnostic Information \- All Emissions, All Model Years
- [CBR\-997 202411](/bulletins/11010857.md), 2024-12-02, Service bulletin: ENGINE. Vehicles may present with oil leak coming from the clutch/flywheel housing and observation of burned clutch smell or clutch slipping. These symptoms can be mistaken as a crankshaft rear main seal leak, when the actual cause is the crankshaft adaptor O\-ring.
- [CBR\-2013 202404](/bulletins/10253807.md), 2024-05-01, Service bulletin: ENGINE AND ENGINE COOLING. CBR: Turbo Compound \(TC\) Hot Side Noise, Diagnostic Information.
- [M\-258\-014 202309](/bulletins/10243453.md), 2023-10-03, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING. TSB: Aftertreatment Diesel Exhaust Fluid \(DEF\) Tank, Level Sensor, Replacement
- [M\-258\-012 202309](/bulletins/10243452.md), 2023-10-03, Service bulletin: ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL:DELIVERY:PRESSURE SENSOR; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. TSB: Aftertreatment Diesel Exhaust Fluid \(DEF\) Tank, Level Sensor, Replacement
- [CBR\-2112 202307](/bulletins/10240231.md), 2023-08-02, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN; ENGINE AND ENGINE COOLING. CBR: Programming Failure \- Chassis With Cummins Engine And An Allison Transmission
- [M0230\-Ver2](/bulletins/10237297.md), 2023-06-05, Service bulletin: ENGINE AND ENGINE COOLING; STRUCTURE. Emission Campaign: Vehicle Emission Label

JSON: [/v1/bulletins/10210032](/v1/bulletins/10210032)

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