**Exhibit 31.02****CERTIFICATION**I, James B. Riley, certify that:     1. I have reviewed this Annual Report on Form 10-K of CSK Auto Corporation;     2. Based on my knowledge, this report does not contain any untrue statement of a materialfact or omit to state a material fact necessary to make the statements made, in light of thecircumstances under which such statements were made, not misleading with respect to the periodcovered by this report;     3. Based on my knowledge, the financial statements, and other financial informationincluded 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 inthis report;     4. The registrant’s other certifying officer and I are responsible for establishing andmaintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules13a-15(f) and 15d-15(f)) for the registrant and have:     (a) Designed such disclosure controlsand procedures, or caused such disclosurecontrols and procedures to be designedunder our supervision, to ensure thatmaterial information relating to theregistrant, including its consolidatedsubsidiaries, is made known to us byothers within those entities, particularlyduring the period in which this report isbeing prepared;     (b) Designed such internal controlover financial reporting, or caused suchinternal control over financial reportingto be designed under our supervision, toprovide reasonable assurance regarding thereliability of financial reporting and thepreparation of financial statements forexternal purposes in accordance withgenerally accepted accounting principles;     (c) Evaluated the effectiveness of theregistrant’s disclosure controls andprocedures and presented in this reportour conclusions about the effectiveness ofthe disclosure controls and procedures, asof the end of the period covered by thisreport based on such evaluation; and     (d) Disclosed in this report anychange in the registrant’s internalcontrol over financial reporting thatoccurred during the registrant’s mostrecent fiscal quarter (the registrant’sfourth fiscal quarter in the case of anannual report) that has materiallyaffected, or is reasonably likely tomaterially affect, the registrant’sinternal control over financial reporting;and     5. The registrant’s other certifying officer and I have disclosed, based on our most recentevaluation of internal control over financial reporting, to the registrant’s auditors and theaudit committee of the registrant’s board of directors (or persons performing the equivalentfunctions):     (a) All significant deficiencies andmaterial weaknesses in the design oroperation of internal control overfinancial reporting which are reasonablylikely to adversely affect theregistrant’s ability to record, process,summarize and report financialinformation; and     (b) Any fraud, whether or notmaterial, that involves management orother employees who have a significantrole in the registrant’s internal controlover financial reporting.Date: April 30, 2007       /s/ James B. Riley     James B. Riley    *Chief Financial Officer*