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NHTSA·Commercial vehicles·December 5, 2025

Nova Bus recalls Ametek ECP and MCP water pumps over loose shaft that can cause pump failure

The impeller shaft in these water pumps may be loose, which can make the pump fail and cause a loss of drive power, raising the risk of a crash.

What to do

Nova Bus will inspect the pump and replace it if needed, free of charge. Owners can contact Nova Bus customer service at 1-450-472-6410 and cite recall number ER25510.

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NHTSA recall page

Recall details

Product
Ametek Ecp Water Pump, Mcp Water Pump
Company
Nova Bus (US) Inc.
Hazard
A pump failure can cause a loss of drive power, increasing the risk of a crash.
Units
25 pieces of equipment
Owner notification
January 30, 2026
Reported to NHTSA
December 5, 2025
Identifiers
  • NHTSA campaign number: 25E083000
  • Manufacturer campaign number: ER25510

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:COOLING SYSTEM:PUMP
Defect
Nova Bus (US) Inc. (Nova Bus) is recalling certain Ametek MCP and ECP water pumps. The impeller shaft may be loose, causing the pump to fail.
Consequence
A pump failure can cause a loss of drive power, increasing the risk of a crash.
Corrective action
Nova Bus will inspect and replace the pump as necessary, free of charge. Owner notification letters were mailed January 30, 2026. Owners may contact Nova Bus customer service at 1-450-472-6410. Nova Bus' number for this recall is ER25510.

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