EXHIBIT 22 - SUBSIDIARY GUARANTORS AND ISSUERS OF GUARANTEED SECURITIES

AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

Our 6.875% Notes, 6.50% Notes and 5.00% Notes are senior unsecured obligations of American Axle & Manufacturing, Inc., all of which are fully and unconditionally guaranteed, on a joint and several basis, by American Axle & Manufacturing Holdings, Inc. and substantially all domestic subsidiaries of American Axle & Manufacturing, Inc. and Metaldyne Performance Group, Inc. The table below defines these entities.

Entity			Organized Under Laws of
Parent Entity
American Axle & Manufacturing Holdings, Inc.			Delaware
Issuing Entity
American Axle & Manufacturing, Inc.			Delaware
Guarantor Entities
AAM International Holdings, Inc.			Delaware
Auburn Hills Manufacturing, Inc.			Delaware
Oxford Forge, Inc.			Delaware
MSP Industries Corporation			Michigan
Colfor Manufacturing, Inc.			Delaware
AccuGear, Inc.			Delaware
Metaldyne Performance Group, Inc.			Delaware
Metaldyne M&A Bluffton, LLC			Delaware
Metaldyne Powertrain Components, Inc.			Delaware
Metaldyne Sintered Ridgway, LLC			Delaware
Metaldyne SinterForged Products, LLC			Delaware
Punchcraft Machining and Tooling, LLC			Delaware
HHI FormTech, LLC			Delaware
Jernberg Industries, LLC			Delaware
Impact Forge Group, LLC			Delaware
ASP HHI Holdings, Inc.			Delaware
MD Investors Corporation			Delaware
AAM Powder Metal Components, Inc.			Ohio
ASP Grede Intermediate Holdings LLC			Delaware
AAM Casting Corp.			Delaware
Tekfor, Inc.			Delaware
AAM North America, Inc.			Delaware
AAM Mexico Holdings, LLC			Delaware