NHTSA·Commercial vehicles·May 6, 2026

Micro Bird recalls 2023–2026 G5 and 2024 MB II school buses over oil lines that can be damaged and leak

On buses with a second air conditioning compressor kit, the drive belt pulley may rub against and damage the oil lines, which could leak oil and raise the risk of a fire if there is an ignition source.

What to do

Dealers will secure the oil lines for free, and owner letters are expected to be mailed June 29, 2026. Owners can call Micro Bird Customer Service at 819-477-2012 and cite recall number 26-121-OUS.

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Recall details

Product
Micro Bird Mb Ii School Bus, G5 School Bus 2023–2026
Hazard
A damaged oil like may leak, increasing the risk of a fire in the presence of an ignition source.
Units
902 vehicles
Owner notification
June 30, 2026
Reported to NHTSA
May 6, 2026
Identifiers
  • NHTSA campaign number: 26V287000
  • Manufacturer campaign number: 26-121-OUS
  • Model years: 2023–2026

The headline, summary and steps above are written in plain English from the official notice below. Identifiers are copied exactly as the agency published them. Always check the official notice before you act.

Official notice

The notice's own wording from NHTSA.

Component
ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
Defect
Corp. Micro Bird, Inc. (Micro Bird) is recalling certain 2023-2026 G5 and 2024 MB II school buses built on a GM chassis and equipped with a second air conditioning compressor kit. The drive belt pulley may contact and damage the the oil lines.
Consequence
A damaged oil like may leak, increasing the risk of a fire in the presence of an ignition source.
Corrective action
Dealers will secure the oil lines, free of charge. Owner notification letters are expected to be mailed June 29, 2026. Owners can contact Micro Bird Customer Service at 819-477-2012. Micro Bird's number for this recall is 26-121-OUS.

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