SHIRE / RFQ
How to compare auto-parts wholesale quotations line by line
Build a like-for-like B2B comparison for exact parts, quantities, currency, packing, shipment scope and unresolved requirements.
The lowest total is not a useful comparison if quotations cover different parts or quantities. First align the requested line list, then compare the confirmed commercial scope. The switch, flasher and valve examples below are separate catalog items, not a priced package. This guide offers a coordination worksheet approach; it provides no live prices, financial advice or preset SHIRE trading terms.
Lock the part list before comparing totals
For every quotation line show the original requested OE, proposed SAP SKU, requested quantity, quoted quantity and any version difference. Put proposed substitutions in a separate note. Mark a missing line as missing rather than zero-priced. Do not add together offers that use different units or split quantities without reconciling them. Product approval is a separate step; a complete total cannot resolve an unknown connector, control mode or specification.
Separate currency and cost scope
Retain each quotation’s stated currency, unit price, line amount and validity information. If you create an internal conversion, document your chosen rate and date and preserve the original values; do not present a calculated comparison as a supplier’s new quote. Keep packing charges, sample fees and any stated logistics items distinct. Clarify what transport or delivery scope is actually included instead of interpreting an unexplained total as delivered cost.
Compare confirmation status, not just desired dates
Show requested shipment date separately from the supplier’s confirmed or estimated date. Ask which quantities, packing requirements and availability remain pending. Compare agreed payment and sample-review requirements as written, without assuming that catalog items are stocked or that an earlier order’s terms still apply. Destination documents and regulatory questions must be checked with the appropriate professionals; this checklist is not a customs or contract opinion.
Save the chosen quotation as a dated decision record
Keep the final document version with the approved part list, accepted differences and open questions. Before transferring details into an order, check quantities and arithmetic and resolve inconsistent identifiers. A revised quotation should remain distinguishable from the earlier one. Use the same approved references for supplier communication and receiving. The goal is an auditable comparison, not a claim that any quotation is cheapest or guarantees shipment.
Purchasing guidance, not installation or diagnostic instructions. Confirm compatibility and specifications with the supplier and a qualified technician.
Catalog examples — not confirmed substitutes
SAP-S200
Power window switch
OE references: 1413146 / 1368831
Catalog specifications ↗
SAP-S131
Flasher relay
OE references: 1328548 / 1401789
Catalog specifications ↗
SAP-S300
Heater control valve
OE references: 1793197 / 1741027
Catalog specifications ↗Compare the actual catalog records
These are current catalog examples, not an approved substitution list. OE references and remarks below are reproduced from the supplied records; they do not establish compatibility, stock or electrical performance.
Editorial note: this purchasing guide was prepared with AI assistance using the supplied catalog and document-coordination scenarios. It is not a product test, technical approval or a promise of SHIRE order terms.
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Please confirm compatibility, voltage and connector details with us before ordering.
