In short. Used, tested, refurbished and remanufactured are different conditions, and none of them means new. Reddy Generators labels every non-new part with one defined condition, states what inspection, repair and testing was actually done, names known limitations and puts warranty terms in writing. Used parts can be the right answer for obsolete equipment or urgent repairs, but rarely for safety-critical or precision engine components.
Why a policy is needed
The generator parts market in India carries a large volume of pulled, repaired and repainted components. Some are good value. Some are scrap with fresh paint. A buyer cannot tell the difference from a photograph, and a controller with a clean case or a polished crankshaft says nothing about the electronics inside or the journal sizes. A clear, honest condition description is the only basis on which an engineer can decide whether a non-new part is acceptable. This policy sets out how we describe and supply them.
Condition categories we use
| Condition | What it means | What we provide |
|---|---|---|
| New, genuine | New part from the original equipment manufacturer’s supply chain, where evidence supports that | Part reference and source |
| New, verified compatible | New non-OEM part whose fit and function have been checked for the stated application | Make, reference, basis of compatibility |
| Remanufactured | Rebuilt to a defined process, usually by or for a manufacturer, with wear parts replaced | Process description and source where known |
| Refurbished or repaired | Used part that has undergone a stated repair or restoration | List of work done, parts replaced and test performed |
| Used, tested | Used part that has passed a defined functional test, without restoration | Test method and result |
| Used, inspected | Used part visually and dimensionally inspected, test coverage limited | Inspection findings and limits of the inspection |
| Used, as removed | Used part supplied without restoration or testing | Source equipment where known; no performance claim |
Only one condition applies to each item. If the evidence does not support a stronger description, the weaker one is used. A supplier’s description of a part is recorded separately from the condition we have verified ourselves.
What we disclose before supply
- Identity: maker, part reference and, for electronic items, hardware and firmware revision.
- Source: the type of equipment it came from and its approximate running hours, where known.
- Condition category from the table above.
- Work performed: only actions that appear in the actual work record.
- Test performed and its result, including what the test does not cover.
- Known limitations, such as cosmetic damage, missing accessories or unknown history.
- Warranty and return terms in the written quotation.
Where used parts make sense, and where they do not
Reasonable uses
Used and refurbished parts are often sensible for obsolete controllers and panel components where no new equivalent exists, for alternator end brackets, covers and other structural parts, for enclosure and frame items, and as a temporary solution to restore a critical set while a new part is on order. Refurbished starters and charging alternators with documented rebuilds are a common and reasonable choice, as discussed on starter and charging parts.
Where we advise against
We do not recommend used internal engine wear parts such as pistons, rings, liners, bearings and valves, because their remaining life cannot be established without measurement and their failure damages the whole engine. Used turbochargers need a proper bearing and balance inspection before any use. Main breakers and protection relays for critical supplies should be new or properly tested with documented settings, because a failure to trip cannot be seen until the fault occurs. See breakers, contactors and relays.
Obsolescence is a decision, not just a part search
When a part is obsolete, a used item is one option among several. The others are a superseded new part, an engineered alternative or a subsystem upgrade such as a controller retrofit. A used part buys time but carries the same obsolescence problem into the future. For critical sets we compare all options against downtime risk and remaining equipment life, using the approach on upgrade and replacement planning.
Records and traceability
Every non-new part we supply is recorded against the receiving asset with its condition category, source, test record and date of fitting. If the part later fails, that record helps establish whether the cause was the part, its installation or the operating conditions, and protects both the customer and us. The same discipline applies to new parts and is described on parts compatibility verification.
Common mistakes
- Buying a repainted component described as refurbished with no work record; it fails early and there is no basis for a warranty claim.
- Fitting used engine bearings or rings to save cost; their unknown wear causes low oil pressure or blow-by and the overhaul is wasted.
- Installing a used protection relay without testing its settings and trip output; the generator is unprotected until the day a fault proves it.
- Treating a used part as the permanent answer to obsolescence; the same search repeats at the next failure with fewer parts available.
What to send us
Send the equipment nameplate, the reference of the part you need and photographs of the existing item. Tell us how critical the set is, whether you would accept a used or refurbished part, and how urgently it is needed, so we can quote the right condition options side by side. Send a spare parts enquiry.
Questions engineers ask
What is the difference between refurbished and remanufactured?
Remanufactured parts are rebuilt to a defined, usually manufacturer-controlled process with all wear parts replaced. Refurbished parts have had specific repairs or restoration, which we list. Neither is new.
Do used parts carry a warranty?
Terms vary by condition category and are stated in the written quotation. Parts supplied as removed usually carry no performance warranty, which is why the category is stated up front.
Is a used controller safe to fit?
It can be, if its hardware and firmware match, it has been bench tested and the site configuration is loaded and verified. Without those steps the risk lies in the settings, not only the hardware.
Will you tell me if a new part is available instead?
Yes. We quote new options alongside used ones where they exist, so the choice between cost, lead time and risk is yours.
We also sell inspected, load-tested used and refurbished generators with panel, installation and AMC.
Technical content reviewed by Srinivas Reddy, Managing Partner, Reddy Generators. Last updated 19 October 2026.