| Part-number identification | Confirm that “515036” is matched to the intended application, axle position, vehicle configuration, and any required ABS or sensor arrangement. Do not rely on the part number alone. | A written application cross-reference, product drawing, and confirmation of the reference source used. Check that the buyer’s vehicle or original-equipment reference is included. | Part-number or application mismatches can lead to incorrect fitment, sensor incompatibility, or installation problems. |
| Dimensional compatibility | Compare mounting points, flange dimensions, bolt pattern, bearing interface, overall dimensions, and connector or sensor details against the approved drawing or sample. | A dimensioned drawing with tolerances, inspection records for critical dimensions, and a sample measured against the same revision. | Dimensional conformity supports correct installation and alignment with the intended vehicle assembly. |
| Design and configuration | Clarify the assembly design, included hardware, sealing arrangement, encoder or tone-ring configuration where applicable, and whether the product is supplied as a complete unit. | Product specification sheet, exploded view or assembly drawing, bill of materials, and a clear list of included components. | Configuration differences can affect installation, ABS operation, and service requirements. |
| Materials and manufacturing | Review the specified materials and the controls used for forging or machining, heat treatment, grinding, and assembly, as applicable to the design. | Material specifications, process flow chart, heat-treatment records where relevant, and sample inspection documentation. | Controlled materials and processes help support consistent mechanical performance and product repeatability. |
| Bearing performance | Compare the supplier’s stated operating limits and performance requirements with the intended vehicle application. Ensure that test conditions and acceptance criteria are defined. | Applicable validation reports, test methods, sample identification, test conditions, and pass/fail criteria. Avoid comparing results produced under different methods. | Comparable test evidence provides a more reliable basis for assessing durability and suitability than unsupported performance claims. |
| ABS sensor and signal | Where the application uses an integrated sensor or magnetic encoder, verify connector type, signal compatibility, sensor position, and the specified test procedure. | Connector drawings, electrical specifications where applicable, encoder or sensor inspection records, and test results for the proposed configuration. | A mechanically compatible assembly may still be unsuitable if its sensing components or signal characteristics do not match the vehicle system. |
| Quality management | Check whether the production site has a current quality-management certificate appropriate to automotive manufacturing, and confirm its scope and validity. | A current certificate and verification of the certified site, scope, and expiry date. ISO 9001 and IATF 16949 are examples of quality-management standards to verify where relevant. | A functioning quality system supports controlled production, corrective action, and consistent record keeping. |
| Inspection and traceability | Compare incoming-material checks, in-process controls, final inspection, lot identification, and the supplier’s process for handling nonconforming products. | A sample inspection plan, anonymized inspection records, lot-code format, and documented corrective-action procedure. | Traceability helps isolate affected production lots and investigate quality issues efficiently. |
| Validation and change control | Ask how the supplier validates a new or revised product and how changes to materials, tooling, processes, or sub-suppliers are reviewed and communicated. | Validation plan, change-control procedure, approval records, and written confirmation that changes require customer notification or approval when agreed. | Uncontrolled changes can alter product fit, function, or consistency without the buyer’s knowledge. |
| Warranty and field support | Compare warranty duration, claim submission requirements, response time, failure-analysis support, and responsibility for confirmed defects. | Written warranty terms, claim workflow, required documentation, and an example of a failure-analysis report with confidential details removed. | Clear procedures make post-sale issue resolution more predictable and measurable. |
| Production capacity and lead time | Review available production capacity, normal and peak lead times, minimum order quantity, and the supplier’s approach to forecast changes. | A written capacity statement, recent lead-time data, production planning process, and agreed order or forecast terms. | Realistic capacity information helps reduce supply interruptions and avoid relying on unverified delivery promises. |
| Packaging and shipment | Check protection against impact, moisture, and contamination; labeling requirements; carton or pallet configuration; and export-document support. | Packaging specification, label sample, shipment photos or sample packaging, and confirmation of the documents provided for export. | Suitable packaging and clear identification help protect parts in transit and support receiving and inventory control. |
| Quotation and total cost | Compare unit price alongside tooling charges, sample costs, payment terms, packaging, shipping basis, and any volume-based pricing conditions. | A written quotation with currency, validity period, Incoterms® rule and named place, order quantity, included items, and a breakdown of additional charges. | A complete quotation makes supplier offers easier to compare and reduces the risk of hidden or misunderstood costs. |
| Supplier verification | Confirm the actual manufacturing or trading role, production location, product-specific experience, and the point of contact responsible for technical and quality matters. | Business and factory documentation appropriate to the transaction, a remote or on-site audit where practical, and direct answers to technical questions. | Understanding the supplier’s role and capabilities helps buyers assess accountability and verify claims before placing orders. |
