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Compare spare parts prices only after confirming that the offers cover the same items, quantities, condition and scope of supply. Then align delivery, timing, payment and warranty terms. Treat anything the supplier has not stated as an open question, not as an included or free service.
Two quotations with the same total can represent different purchases. One may include a complete kit while the other excludes mounting items. One lead time may end at warehouse dispatch; the other may refer to receipt at the agreed location. A useful comparison therefore needs to show more than the lowest number.
The process below is designed for comparing supplier responses to one specification for heavy equipment spare parts.
Belra’s published rebuilt CAT 3412 delivery to an African customer mentions a dyno test and a 12-month warranty. Put those statements in separate evidence columns when comparing offers; they do not establish that every rebuilt, Cat Reman and new engine has identical terms. Ask each supplier for the serial-number fitment, scope of supply, test report, handover point, any core-return conditions and the written warranty.
For a project in South Africa, Ghana or Guinea, compare freight to the same agreed destination and mode, with dispatch and arrival milestones shown separately. Those countries are examples for the buyer’s calculation, not claimed destinations of the published CAT 3412 case. For CAT C32 or Cummins KTA lines, verify the actual part reference before using either quoted price as a baseline.
Sources: https://belraimpex.eu/en/news/supply-of-rebuilt-cat-3412-engine ; https://quickserve.cummins.com/
Start with the specification reference and revision. If one supplier received the original list and another received an amended version, their totals cannot be compared directly. Bring every response back to the current revision and retain the original line numbering.
Check the rules for alternatives as well. “New genuine only” and “new aftermarket acceptable” are different requirements. If an offer contains a substitution, keep it as a separate option and obtain technical approval before treating it as part of the primary comparison.
For a substantial order, separate technical compliance from commercial evaluation. An attractive price does not compensate for a missing item or unconfirmed applicability. Establish which offers meet the requirement before deciding which provides the preferred commercial terms.
Retain both the requested reference and the supplier’s offered part number for each line. Record the brand, condition, quantity, unit and included components beside them. A changed reference needs a written explanation of the substitution and its applicability to the enquiry.
Pay particular attention to “kit”, “assembly” and “complete”. Different suppliers may interpret these terms differently unless the contents are specified. For engine parts and assemblies, confirm which related components are included and which must be purchased separately.
Do not remove unanswered lines from the comparison. Mark them “not offered” or “awaiting confirmation”. Otherwise, a partial basket can appear cheaper than a complete one simply because the suppliers have priced different quantities of work or goods.
| Criterion | Information to record | When clarification is needed |
|---|---|---|
| Product | Reference, brand, condition and quantity | A different reference or only a general description is given |
| Scope | Included components | A kit is mentioned without its contents |
| Price | Currency, line value and total | Units are unclear or lines are missing |
| Delivery | Destination and included charges | The offer only says “delivery included” |
| Timing | Milestone and starting event | “Two weeks” is stated without a definition |
| Payment | Payment stages and triggers | The lead time depends on an unclear event |
| Warranty | Provider and applicable terms | Only a duration is given |
| Validity | Quotation expiry date | Price or availability is stated without a date |
This table reveals differences between offers; it does not establish the reliability of the companies behind them. Supplier due diligence and evaluation of a particular quotation are separate tasks. Even an established supplier should clarify an incomplete specification.
Use the cost of obtaining the same set of goods at the same agreed location. Add separately confirmed costs for missing items, packaging, transport and other services relevant to the shipment. Do not enter an unknown charge as zero.
Where quotations use different currencies, record the exchange rate and date used for the internal comparison. Keep the original quoted values visible. Include currency conversion or bank transfer costs separately where they apply to the order and are known.
Confirm taxes, duties and other mandatory charges for the particular route and supply arrangement. A generic percentage in a purchasing template cannot replace that check. If material amounts remain unknown, label the comparison as preliminary.
Assume both suppliers have confirmed the same parts, condition and quantities. The amounts below are hypothetical, in USD, and are not Belra Impex prices. Adding the missing mounting kit brings both options to an equivalent scope of supply.
| Cost item | Quotation A | Quotation B |
|---|---|---|
| Parts as quoted | 6,000 | 6,550 |
| Missing mounting kit | 450 | Included |
| Transport to the same agreed point | 500 | 300 |
| Comparable subtotal | 6,950 | 6,850 |
Quotation A initially appears USD 550 cheaper. Once the contents and transport scope are aligned, quotation B is USD 100 cheaper. This is not a final landed cost: taxes, insurance and other potential charges have not been evaluated in the example and are not assumed to be zero.
If the additional kit for option A cannot be obtained by the required date, the decision is no longer only about a USD 100 difference. Availability and scope should be checked alongside cost, rather than after choosing a preferred supplier from the price column.
Ask what the quoted lead time ends with: readiness at the warehouse, handover to the carrier or receipt at the agreed location. Establish its starting point as well, such as order confirmation, receipt of payment or approval of technical details.
“In stock” also needs context. Has the supplier confirmed the exact quantity and configuration? How long does that confirmation remain valid? Are the goods reserved for the order, and on what basis? Availability when the quotation was prepared should not automatically be treated as a reservation.
Separate the buyer’s requested date from the supplier’s confirmed commitment. “Please deliver by Friday” describes the requirement. A supplier’s written confirmation of receipt at the named location by that date provides different information. If a date is provisional, record it as provisional in the comparison.
Discuss split deliveries with the repair team. Can useful work start with the first shipment? Will multiple movements increase transport costs? Will the essential assembly remain incomplete? The answer should reflect the repair plan, not just the availability of individual items.
If a reman or rebuilt offer requires the return of an old assembly, add a separate core section. Record the amount involved, refund or credit conditions, acceptance criteria, deadline and return transport arrangements.
It is useful to show both the initial payment requirement and the cost after a confirmed credit. A potential refund is not a guaranteed reduction at the time the order is placed. If the core is not accepted, the final amount can differ from the buyer’s initial expectation.
A core arrangement does not automatically make an option better or worse. The relevant questions are whether the conditions can be met and whether the associated costs are understood. Until then, the comparison is incomplete.
Instead of several disconnected messages, send one list of differences using the original line references. For example: “Line 04 shows a different part number; please confirm the substitution. Line 09 does not state the kit contents. Please clarify whether the quoted period ends at dispatch or receipt at our location.”
Ask for a revised quotation that incorporates the answers into the specification and terms. The approved purchase should not depend on recovering qualifications from several emails, attachments and informal conversations.
Before internal approval, establish what is being purchased, what must be paid, when and where the goods are expected, and which terms apply to discrepancies or warranty claims. Where an answer is still missing, record the issue and who is responsible for resolving it.
Keep the revision date with the final comparison. A clear table built from expired prices or superseded quantities is still an unreliable basis for an order. If a supplier changes a material term, update the relevant line rather than leaving the earlier comparison in circulation.
Price is meaningful among offers that satisfy the requirement. An incomplete option or one with unconfirmed applicability is not yet ready for a like-for-like comparison. Resolve the differences first, then assess price alongside the other agreed criteria.
Compare the identical covered lines separately, then calculate the cost of obtaining the missing items and any related charges. Do not compare a partial quotation’s grand total with the total for the full specification without that adjustment.
Do not make either a favourable or an unfavourable assumption for the supplier. Mark the term as unconfirmed and request a written explanation. Update the comparison when the response arrives, keeping the quotation date and revision.
Send Belra Impex the current specification, acceptable options, equipment identification and delivery destination. The minimum B2B order value is USD 5,000; availability and the terms for particular items are confirmed against the enquiry.
A well-defined request makes the response easier to examine line by line. A useful comparison then explains the purchasing decision through the actual contents, costs and confirmed conditions, rather than the claim that one supplier simply “looked cheaper”.
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