Exhibit31.1

Certification Pursuant To Section 302 Of TheSarbanes-Oxley Act Of 2002 (Chapter 63, Title 18 U.S.C. Section1350(A) And (B))

I, Timothy D. Leuliette, certifythat:

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| 1.  | I have reviewed thisquarterly report on Form 10-Q of Metaldyne Corporation; |

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| 2.  | Based on my knowledge, this reportdoes not contain any untrue statement of a material fact or omit tostate a material fact necessary to make the statements made, in lightof the circumstances under which such statements were made, notmisleading with respect to the period covered by this report; |

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| 3.  | Based on my knowledge, the financialstatements, and other financial information included in this report,fairly present in all material respects the financial condition,results of operations and cash flows of the registrant as of, and for,the periods presented in this report; |

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| 4.  | The registrant's othercertifying officer and I are responsible for establishing andmaintaining disclosure controls and procedures (as defined in ExchangeAct Rules 13a-15(e) and 15d-15(e)) for the registrant and have: |

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|  | a)  | Designed such disclosure controlsand procedures, or caused such disclosure controls and procedures to bedesigned under our supervision, to ensure that material informationrelating to the registrant, including its consolidated subsidiaries, ismade known to us by others within those entities, particularly duringthe period in which this report is being prepared; |

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|  | b)  | Evaluated the effectiveness of theregistrant's disclosure controls and procedures and presented inthis report our conclusions about the effectiveness of the disclosurecontrols and procedures, as of the end of the period covered by thisreport based on such evaluation; and |

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|  | c)  | Disclosed in this report any changein the registrant's internal control over financial reportingthat occurred during the registrant's most recent fiscal quarterthat has materially affected, or is reasonably likely to materiallyaffect, the registrant's internal control over financialreporting; and |

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| 5.  | Theregistrant's other certifying officer and I have disclosed, basedon our most recent evaluation of internal control over financialreporting, to the registrant's auditors and to the auditcommittee of the registrant's board of directors (or personsfulfilling the equivalent function): |

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|  | a)  | All significant deficiencies andmaterial weaknesses in the design or operation of internal control overfinancial reporting which are reasonably likely to adversely affect theregistrant's ability to record, process, summarize and reportfinancial information; and |

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|  | b)  | Anyfraud, whether or not material, that involves management or otheremployees who have a significant role in the registrant'sinternal control over financial reporting. |

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| Date:May 18, 2005 |  |   |  | /s/ Timothy D.Leuliette                                            |
|              |  |   |  | TimothyD. Leuliette Chairman, President and Chief ExecutiveOfficer |
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