Greenbriar Equity Group LLC has acquired majority stakes in Western Peterbilt Inc. and Western Truck Parts and Equipment Coo. LLC, a leading operator of heavy-duty truck dealerships in the Pacific Northwest.

Greenbriar acquired its principal interest from Jim Coles, the company's chairman and chief executive officer, and from Stu Engs, both of whom will continue to be substantial investors. Terms were not disclosed.
Headquartered in Seattle, Wash., WPI operates a network of 16 locations from Alaska to Northern California that provide one-stop service for the needs of its customers, including the retail sale of new and used transportation equipment, aftermarket parts sales, scheduled full-service maintenance, random arrival repair services, short-term truck rental, long-term full service leasing and financing.