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OE Reference Cross-Match
Explore top-quality 30%20121%20121%20B available online at Carbus24. Browse genuine OEM and certified aftermarket replacement parts with guaranteed vehicle fitment, competitive prices, fast worldwide shipping, and premium customer service.
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AUDI · Genuine
Out of stock · Dispatch in 3 business days
Price on Request
VAICO · Aftermarket
In stock · Dispatch in 3 business days
0.02 USD
SWAG · Aftermarket
Out of stock · Dispatch in 3 business days
1.72 USD
MAXGEAR · Aftermarket
Out of stock · Dispatch in 3 business days
0.96 USD
ORIGINAL IMPERIUM · Aftermarket
Out of stock · Dispatch in 3 business days
1.89 USD
MOTORAD · Aftermarket
Out of stock · Dispatch in 3 business days
3.31 USD
SPIDAN · Aftermarket
Out of stock · Dispatch in 3 business days
130.34 USD
DINEX · Aftermarket
Out of stock · Dispatch in 3 business days
3970.37 USD
TOPRAN · Aftermarket
Out of stock · Dispatch in 3 business days
1.24 USD
MIRAGLIO · Aftermarket
Out of stock · Dispatch in 3 business days
19.34 USD
FEBI BILSTEIN · Aftermarket
Out of stock · Dispatch in 3 business days
Price on Request
AUTOMEGA · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestAUDI · Genuine
Out of stock · Dispatch in 3 business days
Price on RequestCSV electronic parts · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestBOGAP · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestBGA · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestAUTOSTAR · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestWILMINK GROUP · Aftermarket
Out of stock · Dispatch in 3 business days
Price on Request
DIAMAX · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestKRAFTVOLL GERMANY · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestA.Z. Meisterteile · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestSTORM QUALITY PARTS · Aftermarket
Out of stock · Dispatch in 3 business days
Price on Request4U Autoparts · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestBSG · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestRecOficial · Aftermarket
Out of stock · Dispatch in 3 business days
Price on Request
VOLKSWAGEN · Genuine
Out of stock · Dispatch in 3 business days
Price on RequestFARE-MX · Aftermarket
Out of stock · Dispatch in 3 business days
Price on Request
SPIDAN · Aftermarket
Out of stock · Dispatch in 3 business days
Price on Request
MAPCO · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestATI · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestMETZGER AUTOTEILE · Aftermarket
Out of stock · Dispatch in 3 business days
Price on Request
Valeryd · Aftermarket
Out of stock · Dispatch in 3 business days
Price on Request
KILEN · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestMEAT & DORIA · Aftermarket
Out of stock · Dispatch in 3 business days
Price on Request
BIRTH · Aftermarket
Out of stock · Dispatch in 3 business days
Price on Request
ASAM AUTOMOTIVE · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestJP · Aftermarket
Out of stock · Dispatch in 3 business days
Price on Request
AUGER · Aftermarket
Out of stock · Dispatch in 3 business days
Price on Request
OSSCA · Aftermarket
Out of stock · Dispatch in 3 business days
Price on Request
VAG · Genuine
Out of stock · Dispatch in 3 business days
Price on Request
FEBI BILSTEIN · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestRAMEDER · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestKLOKKERHOLM · Aftermarket
Out of stock · Dispatch in 3 business days
Price on Request
KTK GERMANY · Aftermarket
Out of stock · Dispatch in 3 business days
Price on RequestWhy Customers Choose CarBus24
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Checked against the OE numbers above before listing.
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Cross-referenced parts are cataloged as fitting the same application but are not guaranteed to be identical to the original manufacturer part. Verify fitment against your OE number or VIN before ordering.
Reference/cross-reference numbers vary by engine, transmission, chassis and production date — not by number alone. Before ordering, compare your original OE number against 30121121B number by AUDI listed above, and check the dimensions or specifications against your original part.
If you’re unsure, contact CarBus24 with your VIN or the number printed on your original part and we’ll confirm the correct match before you order.
| OE (SACHS, Ford, Mazda) | Aftermarket (FAST, Valeo, LUK, Exedy) |
|---|---|
| Matches original manufacturer specification | Cross-referenced to the same application |
| Typically higher price | Typically lower price |
| Direct OE part number | Equivalent fit, different part number |
Compare your original OE number against the OE Reference Numbers listed above, and check the dimensions or specifications against your original part.
OE parts match the original manufacturer specification. Aftermarket parts are cross-referenced to fit the same application, usually at a lower price.
Yes — select your vehicle from the sidebar to see parts confirmed to fit your car.
Send us your VIN or the number printed on your original part and our team can confirm the correct match before you order.