An OM640 diesel timing chain order should be specific enough that the owner, workshop and supplier are discussing the same engine and the same repair. A-Class and B-Class model names alone leave too much room for confusion. This guide focuses on the RunningRoo package described with one chain, one tensioner and three guides, and explains how to compare that package with an actual workshop requirement.
The RunningRoo OM640 diesel timing chain kit has a corresponding active RunningRoo eBay item. Availability was checked on 14 October 2026. For assistance with VIN, engine code and OE matching, call 0425 890 125. RunningRoo offers friendly Australian-operated support, Melbourne local pickup in Blackburn by appointment, and fast dispatch arrangements that should be confirmed for the current stock and delivery destination.
Start with the diesel engine identity, not the badge
Mercedes-Benz describes its B2B Connect platform as a route to vehicle-specific parts catalogues and repair information, including access to XENTRY WIS and Parts Information where activated. That is the appropriate kind of reference for checking a particular vehicle. A seller title alone does not establish that an aftermarket timing package fits a particular car. Ask the workshop to identify the required components from the vehicle record before comparing the proposed package. Mercedes-Benz parts and workshop information.
RunningRoo describes this product for selected A160, A180 and A200 CDI W169 applications, and B180 and B200 CDI W245 applications. Treat those names and the advertised years as catalogue search aids. The final decision should use the full VIN, installed engine designation, production details and applicable OE references. Do not convert a broad application list into a guarantee for all cars with one of those badges.
A good enquiry reads more like a short workshop note than a search phrase. State which vehicle you own, whether its engine is original, what component the technician has recommended, and which reference numbers have been checked. If the engine suffix is not yet available, say so. An honest unresolved detail is more useful than a guessed code that sends the enquiry down the wrong path.
This particular package has five named main components
The written description lists a 108-link chain, a tensioner and three guides. The number of guides is worth checking because a shopper may compare this listing with another package that has a different scope or uses different terminology. The point is not to choose by the largest count; it is to ensure each required position is accounted for.
| Seller-listed part | Quantity | Workshop confirmation needed |
|---|---|---|
| Chain, described as 108 links | 1 | Correct chain reference and supplied connection arrangement |
| Tensioner | 1 | Correct replacement for the installed engine |
| Guides | 3 | Identify the three positions against the applicable drawing |
| Camshaft or crankshaft gears | Not named in this package list | Decide whether separate parts are required |
| Gaskets, seals, bolts and fluids | Not established by this package list | Obtain the procedure-specific requirement |
The catalogue image may help the workshop recognise the listed parts. It should not be used to infer an installation technique, a joining method or the suitability of a particular tool. Ask the supplier what is supplied, and ask the installer how the manufacturer procedure applies to the vehicle. Those are complementary questions with different sources of authority.
Where a workshop requests a gear, an additional seal or a particular fastener, keep that item on the order worksheet even if it is outside this kit. Mark it as separately supplied rather than allowing it to disappear from the plan. The kit can still be the correct purchase, provided the remaining repair requirements have been identified and arranged.
Compare the actual listings before choosing a package
RunningRoo has more than one OM640-related listing, so keep the product URL and item number visible when discussing an order. Two similar titles do not prove that their contents, price or intended scope are identical. A supplier can answer a precise question much more easily when it includes the actual listing being considered rather than a screenshot with its identifying details removed.
Use the five-component OM640 product page and the matching eBay listing as the reference pair for this article. Ask whether the current supplied chain, tensioner and guide set agrees with the workshop’s required parts. If another package is recommended, request its specific link and a short explanation of the difference before changing the order.
This comparison is particularly valuable when a workshop estimate uses only the phrase “timing kit”. Ask the technician to expand that phrase into the expected parts. It may mean the same five named main components, or it may include other items. The shopping decision should follow the clarified estimate rather than forcing the estimate to fit whichever listing was found first.
Ask for evidence that supports timing-drive work
A diesel engine concern should be assessed in context. Tell the workshop what you have observed, including when it began, whether it happens only under certain conditions and whether maintenance preceded it. Avoid supplying a diagnosis disguised as a symptom. “The chain is bad” gives the technician less useful starting information than a clear description of the actual noise or running complaint.
Ask the workshop to explain which findings justify the proposed replacement. The answer might require further inspection, and the final parts scope may remain conditional until that work is complete. Request a distinction between confirmed faults and items being considered. This helps you decide when the order is ready to proceed and what questions should remain open.
The article does not publish an OM640 chain replacement interval or a universal inspection limit. Nor does it claim that a particular sound always identifies the chain, guides or tensioner. The appropriate measurements, test sequence and repair instructions must come from the vehicle-specific Mercedes service information used by the technician. A sales description cannot substitute for that process.
Keep software campaigns and mechanical parts enquiries separate
Mercedes-Benz’s official European diesel update overview mentions certain A-Class and B-Class variants with OM640 engines in the context of emissions software measures. That information concerns a defined campaign context; it is not evidence that a car needs timing-chain replacement. It also does not establish Australian eligibility or the current status of any individual VIN. Mercedes-Benz official overview.
If a dealer or workshop mentions a campaign during the diagnosis, record its identifier and ask exactly what it covers. Keep that information beside, rather than inside, the mechanical parts list. The two issues may need attention during the same ownership period, but they should not be blended into a claim that a chain kit resolves a software or emissions matter.
This separation protects the quality of the purchasing decision. The owner should know why the chain package is recommended, what other work is proposed, and which organisation can confirm any campaign. It also helps the supplier avoid being asked to guarantee an outcome that belongs to a different diagnostic or manufacturer process.
Organise the enquiry around three decisions
The first decision is identification: does the proposed kit match the actual engine and the necessary OE references? The second is scope: does it contain the chain, tensioner and guide positions the workshop intends to replace? The third is logistics: can the confirmed parts arrive or be collected in time for the agreed booking? Resolve them in that order.
For identification, send the VIN and engine information together. For scope, send the technician’s list and any useful component photographs. For logistics, provide the postcode or requested pickup arrangement. Putting these details in a single message reduces back-and-forth while keeping the important questions explicit. Avoid mixing several vehicles into one unlabelled conversation.
If you are ordering for someone else’s car, obtain their workshop details before paying. A family member may know the model name but not the engine variant. A workshop may have the exact part reference but not the preferred delivery address. Bringing those details together is a practical way to prevent a correct part from being associated with the wrong job.
Plan workshop time around confirmed information
Ask whether the workshop wants the parts on site before the vehicle is dismantled. Some repair plans can be finalised in advance; others depend on what is found after access. Have the installer explain the approach for your vehicle and identify any decision points. Do not invent a universal labour time from another A-Class or a video of a different engine.
Agree on how additional work will be authorised. An updated estimate should name the extra item, explain why it is required and state whether it changes the completion time. This is clearer than a vague contingency described as “anything else needed”. It lets an owner distinguish essential repair requirements from optional maintenance recommendations.
For local assistance, call RunningRoo on 0425 890 125. Melbourne pickup in Blackburn requires an appointment, so arrange the collection details before travelling. If ordering for delivery, ask about fast dispatch and the current shipping service. An estimated dispatch date and an estimated arrival date are different pieces of information; keep both clear in the workshop plan.
Receiving and documenting the five-part set
On arrival, retain the order reference and packaging while checking the contents. Count the chain, tensioner and three guides against the confirmed seller list. Keep the package separate from other Mercedes parts awaiting installation. If several similar jobs are in the workshop, label the parts with the vehicle reference so the correct set remains associated with the correct car.
Have the installer resolve any marking or design difference before fitting. A changed appearance may have an explanation, but that explanation should be confirmed rather than assumed. Photograph the relevant detail clearly and include the product link in the enquiry. This gives RunningRoo a concrete question and avoids unnecessary messages about an unidentified component.
At collection, ask the workshop to describe the completed repair and provide the final parts record. Retain the invoice, any relevant inspection findings and the maintenance advice for the vehicle. These records provide a useful starting point for future servicing. They also distinguish what was actually replaced from what was initially discussed during a provisional diagnosis.
Learn the terminology with RunningRoo
Watch the RunningRoo general timing-system video if you would like background before discussing the estimate. It is educational material about the topic, not an OM640 workshop procedure. The items shown should not be treated as proof of this package’s contents or compatibility. Use the confirmed listing for the purchase and the applicable manufacturer instructions for installation.
Frequently asked questions
Is OM640 the same engine as M266?
No. This listing is for an OM640 diesel application; an M266-labelled kit is a different product and must not be substituted without a vehicle-specific catalogue match. Do not select a kit from the body shape or model name alone. Confirm the installed engine and the required OE references before choosing parts, especially where several A-Class or B-Class listings appear together.
Does this listing include new gears?
The written package list used here names a chain, a tensioner and three guides. It does not establish gear inclusion. If the workshop requires gears, ask for them explicitly and obtain the correct references and a separate quotation where necessary. Do not assume they are present because another OM640 package includes them.
Can the chain be selected by its 108-link description?
That description is helpful but incomplete. It does not replace the engine and OE check or tell the installer which service procedure to use. Ask for the correct package for the vehicle and have the workshop confirm its configuration. A matching count alone is not sufficient evidence of interchangeability.
Do I need to buy immediately after hearing a noise?
Arrange professional assessment first. A sound recording may help explain the complaint, but it cannot reliably establish the required parts by itself. Ask the technician to document the findings and recommend a component scope. Order when the identity and repair requirement are sufficiently clear to support a sound purchase.
Is the catalogue stock figure a promise of same-day pickup?
No. Stock can change, and collection needs to be arranged. RunningRoo provides Melbourne local pickup by appointment in Blackburn. Confirm the item, order reference and collection time before setting out. If delivery is needed, check current dispatch arrangements and the shipping estimate for the destination.
How do I request a fitment check?
Send the RunningRoo OM640 kit link, your VIN, engine code and workshop OE references, or use the corresponding eBay item to keep the enquiry with that order. Call 0425 890 125 for friendly Australian-operated support. Ask for confirmation of the five named main components and identify any separately required parts before committing to the workshop booking.