EXHIBIT 21

SUBSIDIARIES OF

WESTINGHOUSE AIR BRAKE COMPANY

WABCO'S
JURISDICTION OF OWNERSHIP
COMPANY INCORPORATION INTEREST
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Allied Friction Products Australia Pty Ltd. Australia 100%
Benn Iron Foundry Ltd. Ontario 100%
Cobra Canada Inc. Canada 100%
Cobra Europe S.A. France 100%
Evand Pty Ltd. Australia 100%
Futuris Industrial Products Pty Ltd. Australia 100%
Mark IV Netherlands B.V. Netherlands 100%
Pulse Electronics, Inc. Delaware 100%
Railroad Friction Products Corporation Delaware 100%
RFPC Holding Corporation Delaware 100%
TFL, Inc. Delaware 100%
ThermoSealed Castings Ltd. Ontario 100%
Vapor Canada Inc. Canada 100%
Vapor Corporation Delaware 100%
Vapor UK Limited United Kingdom 100%
W & P Holding Corporation Delaware 100%
Westinghouse Railway (Canada), Ltd. Ontario 100%
Westinghouse Railway Holdings (Canada) Inc. Ontario 100%