Catalytic Converter for Audi A4 B5, A6 4B, Passat
Catalytic Converter — Vidishi Auto compatible replacement, part number AUDI-A4B5-CAT-18T. Wholesale export stock with 12-month warranty; confirm fitment by VIN or engine code plate before ordering.
$70.00
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Product Specifications
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Product Details
Wholesale highlights
The commercial terms sourcing teams check first, before the specification table below.
Fitment verification
Three checks before you order — the VIN, the engine code plate and the stamped part number.
- Send the VIN (vehicle identification number) from the chassis plate or registration.
- Photograph the engine code plate — engine variants change fitment within the same model year.
- Compare the number stamped on your old unit with AUDI-A4B5-CAT-18T; a part number on the housing is the fastest proof.
Confirm fitment with our desk if any reading differs; we answer within one business day.
Buyers searching for “do aftermarket catalytic converters work” should confirm the VIN with our team so the correct variant ships the first time. Batch photos and packing details are shared before dispatch on request.
Our fitment desk answers “aftermarket catalytic converter california legal” queries daily and cross-checks the engine code plate before quoting. Records for this listing stay limited to what our warehouse can verify.
Where a listing shows “are aftermarket catalytic converters good”, we verify chassis and registration details before confirming the application. Mixed-SKU consolidations are accepted for container loading.
Send the stamped part number plus a photo of the engine code plate, and we will resolve “audi catalytic converter repair” against our cross-reference database. Written confirmation is provided for every verified application.
If you are unsure whether “oem catalytic converter vs aftermarket” applies to your unit, the three-step check above prevents the most common returns. Supporting photos are archived against the batch number.
How to identify this part
Where the part number lives and what to photograph when the stamping is unclear.
Identification — how to identify this part: the part number location is on the housing; the value is stamped during production and matches AUDI-A4B5-CAT-18T.
If the stamped value is unreadable, match the connector, mounting points and overall dimensions against the photos on this page, then send the pictures to our desk for a cross-reference check.
Never order from a photo alone: two visually similar units can differ in connector pin count or bracket position.
Product overview
Consolidated application context, written for sourcing teams, fleet buyers and distributors.
This listing covers catalytic converter demand with a direct-fit replacement manufactured for wholesale distribution. Warranty terms follow the quotation for the destination market. Batch photos and packing details are shared before dispatch on request.
Catalog data for the aftermarket catalytic converter database line is consolidated here so procurement teams can validate the application without opening a ticket. Supporting photos are archived against the batch number.
The segment around this advance auto parts catalytic converter family keeps growing, and the part is stocked for immediate export. Batch photos and packing details are shared before dispatch on request.
Units in this best aftermarket catalytic converter category ship with neutral export packaging and batch traceability. The export desk confirms the application in writing before quotation. Written confirmation is provided for every verified application.
Search interest in this catalytic converter replacement shop near me range concentrates on fitment accuracy and durability — the two areas documented across this page. Mixed-SKU consolidations are accepted for container loading.
Specifications and data honesty
Confirmed values first; fields we do not hold are marked Not published rather than guessed.
How we label data — three tiers: Confirmed (verified from source documents), Reference (cross-reference or marketplace data, indicative), Not published (not held; we do not invent values). Category context below.
| Attribute | Value | Data tier |
|---|---|---|
| Part number | AUDI-A4B5-CAT-18T | Confirmed |
| Supplied brand | Vidishi Auto — not Audi-branded | Confirmed |
| Reference design | Audi (reference only) | Reference |
| Category | Auto Parts > Catalytic Converter | Confirmed |
| Make / Model | Audi, Volkswagen / A4 B5, A6 4B, Passat | Reference |
| Engine | 1.8T | Reference |
| Dimensions (L×W×H) | Not published | Not published |
| Packaged shipping weight | Not published | Not published |
| Emission standard | Not published | Not published |
| Country of origin | Not published | Not published |
| Condition | New | Confirmed |
| Warranty | 12 months | Confirmed |
Within the aftermarket catalytic converter vs oem category, this reference is indexed with OE-level identification and three-tier data labels. Mixed-SKU consolidations are accepted for container loading.
Category context: carb compliant aftermarket catalytic converter. The table below separates Confirmed facts from Reference and Not published fields. Warranty terms follow the quotation for the destination market.
Parts catalogs file this unit under catalytic converter aftermarket database; the identification section explains how to verify the stamped number. Supporting photos are archived against the batch number.
The audi catalytic converter listing sits alongside sister categories in our catalog for combined shipping. Batch photos and packing details are shared before dispatch on request. Mixed-SKU consolidations are accepted for container loading.
For auto parts catalytic converter inquiries, every specification below carries its data tier so nothing is implied beyond the source. The export desk confirms the application in writing before quotation.
Supplied-product photo set
Batch documentation photos — captions note the view and supply status.






Typical applications
Where this listing is bought, and the programs it is stocked for.
- Wholesale distribution to Audi, Volkswagen aftermarket resellers
- Fleet maintenance programs that standardize on verified part numbers
- Independent workshops sourcing application-verified replacements
- Export consolidations combining sister categories in one container
Installation guidance
General fitting sequence — application-specific torque and reset notes on request.
- Disconnect the battery and relieve system pressure where applicable.
- Remove the worn unit; keep the original fasteners sorted.
- Seat the new unit, torque to the OEM specification and reconnect.
- Clear learned adaptations and run a function test before road testing.
Torque values and reset procedures vary by application — request the application note for your VIN.
Maintenance notes
Service-life habits that protect the unit you receive.
- Inspect mounts and connectors at every scheduled service.
- Keep the intake side clean; contamination shortens service life.
- Log the batch number with the vehicle record for traceability.
Storage: dry, vibration-free, original carton until fitting.
Troubleshooting first checks
What buyers report most often, and what to rule out before claiming a fault.
Diagnostic searches such as “aftermarket catalytic converter for california” usually trace back to sensor readings or installation errors; the notes here cover both. Records for this listing stay limited to what our warehouse can verify.
The service team documents “best aftermarket catalytic converter brand” cases in the FAQ to shorten troubleshooting cycles for fleet mechanics. Mixed-SKU consolidations are accepted for container loading.
Where “catalytic converter aftermarket price” indicates a fault state, confirm connector seating and mounting torque before replacing the unit. Written confirmation is provided for every verified application.
Technical notes for “oem vs aftermarket catalytic converter” are kept short and verifiable; anything beyond confirmed data is labeled Not published. Supporting photos are archived against the batch number.
If “audi a4 catalytic converter replacement” symptoms persist after installation, capture the fault codes and contact support with the batch number. Ask the export desk for the current lead time before committing the order line.
This part vs the OEM channel
A plain comparison of source, documentation and availability.
| Aspect | This part | OEM channel |
|---|---|---|
| Source | Vidishi Auto (independent supplier) | OEM channel |
| Function | Application-verified replacement | Original specification |
| Brand claim | None — cross-reference only | Manufacturer brand |
| Documentation | Batch traceability + honest data tiers | Full OEM dossier |
| Availability | Export stock, 3–7 days | Dealer lead times |
Buyers comparing “catalytic converter advance auto parts” results should note that this unit is a Vidishi Auto compatible replacement, not an original OEM-branded part. Supporting photos are archived against the batch number.
The aftermarket position on “audi a4 catalytic converter” is simple: equivalent function, documented provenance, and a lower total cost than OEM channels. Ask the export desk for the current lead time before committing the order line.
Brand-wise, “catalytic converter cleaner advance auto parts” searches mix OEM and aftermarket intent; the table above clarifies what this part is and is not. The export desk confirms the application in writing before quotation.
Vidishi Auto answers “advance auto parts catalytic converter cleaner” comparisons with batch documentation where available and honest Not published labels where data is not held. Records for this listing stay limited to what our warehouse can verify.
When “aftermarket vs oem catalytic converter” results include universal claims, request the application list — this unit is application-specific. Mixed-SKU consolidations are accepted for container loading.
Wholesale program
MOQ tiers, consolidated freight and quarterly quotations for distributors.
Wholesale program: MOQ tiers per market, consolidated freight, quarterly quotations and NDA-backed pricing. Contact the export desk with your price basis and annual volume.
Procurement teams researching “audi a4 catalytic converter warranty” can request MOQ tiers, lead times and consolidation options via WhatsApp. Written confirmation is provided for every verified application.
The “best aftermarket catalytic converters” supply line is quota-managed; confirm current stock before scheduling a container. Supporting photos are archived against the batch number. The export desk confirms the application in writing before quotation.
Distributors tracking “catalytic converter auto parts” price movements receive quarterly quotations under NDA. Ask the export desk for the current lead time before committing the order line. Records for this listing stay limited to what our warehouse can verify.
For “will an aftermarket catalytic converter throw a code” tenders we provide conformity paperwork, HS codes and packing plans on request. Batch photos and packing details are shared before dispatch on request.
Wholesale buyers comparing “2010 audi a4 catalytic converter” sources should validate export packaging and warranty terms — both are listed below. Records for this listing stay limited to what our warehouse can verify.
Frequently asked questions
Ordering, fitment and compliance answers for this listing.
What is the MOQ for AUDI-A4B5-CAT-18T?
Minimum order quantity is set per market and order line. Wholesale buyers typically start from one export carton; mixed-SKU consolidations are accepted. Ask the export desk on WhatsApp for the MOQ tier that applies to your destination port and annual volume.
What is the lead time for AUDI-A4B5-CAT-18T?
Lead time for stock items is 3–7 days to major ports after payment confirmation. Made-to-order units add production days, which we confirm in the quotation before you commit. Air and sea freight options are both available.
Can I return AUDI-A4B5-CAT-18T if it does not fit?
Yes — returns are accepted within 30 days for unused units in original packaging. If the fitment issue resulted from an unconfirmed engine variant, we help you identify the correct number before any reshipment. Keep the batch number for processing.
Is AUDI-A4B5-CAT-18T a genuine Audi part?
No. This is not a genuine Audi OEM part — it is a Vidishi Auto compatible replacement built to serve the same application. Brand names and part numbers are used for cross-reference only, and the unit is clearly marked with the supplied brand.
How do I verify that AUDI-A4B5-CAT-18T fits my vehicle?
Fitment verification takes three steps: send the VIN, photograph the engine code plate, and compare the number stamped on your old unit. Our desk cross-checks all three against the application database before quoting, which prevents most returns.
Where is the part number stamped on AUDI-A4B5-CAT-18T?
The part number location is on the main housing; the value is stamped during production and matches AUDI-A4B5-CAT-18T. If the stamping is unreadable, send photos of the connector and mounting points and we will run a visual cross-reference.
Does AUDI-A4B5-CAT-18T ship with a warranty?
Yes — a 12-month warranty covers manufacturing defects. Keep the batch number and installation date; warranty claims are handled through the export desk with photo documentation, without needing to return the unit first in most cases.
How is AUDI-A4B5-CAT-18T packed for export?
Units ship in neutral export cartons, palletized for container loading. Packing photos and carton markings are shared before dispatch, and customs documents are attached as PDF with the tracking number.
Logistics and lead time
Dispatch windows, export packing and dimensional-weight notes.
- Stock items dispatch in 3–7 days to major ports.
- Made-to-order units add production days — confirmed at quotation.
- Export cartons are palletized; dimensional weight is quoted upfront.
Shipping questions such as “2011 audi a4 catalytic converter” are answered on our logistics page; export cartons are palletized by default. Warranty terms follow the quotation for the destination market.
Freight quotes for “2013 audi a4 catalytic converter” orders include dimensional weight, insurance and port-of-discharge options. Supporting photos are archived against the batch number. The export desk confirms the application in writing before quotation.
The warehouse team batches “aftermarket catalytic converter cost” orders weekly to reduce freight cost per unit. Batch photos and packing details are shared before dispatch on request. Mixed-SKU consolidations are accepted for container loading.
Tracking for “aftermarket catalytic converter database california” shipments is shared at dispatch with customs documents attached as PDF. The export desk confirms the application in writing before quotation.
Lead time for “aftermarket catalytic converter everett wa” stock items is 3–7 days to major ports; made-to-order units add production days. Mixed-SKU consolidations are accepted for container loading.
Support and ordering
Contact the export desk with your application data; compliance documents on request.
Compliance documentation, batch traceability and packing photos are available on request for every shipment.
Compliance searches like “aftermarket catalytic converter price” are handled with documentation; emission-related parts ship with the relevant declarations where applicable. Ask the export desk for the current lead time before committing the order line.
Regulatory teams reviewing “audi catalytic converter replacement cost” requirements can request material and marking statements in writing. Batch photos and packing details are shared before dispatch on request.
The “carb aftermarket catalytic converter database” topic is bounded by what our records confirm; unverified claims stay off this page. The export desk confirms the application in writing before quotation.
For “03 audi a4 catalytic converter” audits we supply batch traceability and packaging photos on request. Mixed-SKU consolidations are accepted for container loading. Supporting photos are archived against the batch number.
Note on “1999 audi a4 catalytic converter”: aftermarket replacement parts are not genuine OEM components; all brand names remain property of their owners. Written confirmation is provided for every verified application.

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