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Expansion tank cap, Coolant expansion tank, Radiator cap 3C0121321

An OEM number is a unique code containing letters and digits. Car manufacturers use them to mark every part inside their cars. A non-original car part carrying an OEM number demonstrates that the part meets stringent car manufacturer standards and its parameters and technical specifications are identical to original equipment.

All spare parts in the list below are equivalent to OEM number 3C0 121 321:

  • 3C0 121 321 (original number of AUDI)
  • 3C0 121 321 (original number of SEAT)
  • 3C0 121 321 (original number of SKODA)
  • 3C0 121 321 (original number of VW)
  • 3C0 121 321 (original number of CUPRA)
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48 items
ABAKUS 053-027-007 ABAKUS 053-027-007 Expansion tank cap 3C0121321
ABAKUS Expansion tank cap 3C0 121 321
Article number: 053-027-007
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  • Colour: black
  • Pressure [bar]: 1,6
  • Item number: 053-027-007
  • Our price: 4,65 €
  • Manufacturer: ABAKUS
  • EAN number: 224657220084482200844
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock
4,65 €

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ORIGINAL IMPERIUM Expansion tank cap 3C0 121 321
Article number: 43016
Reviews - 2
  • Pressure [bar]: 1,4
  • Weight [g]: 66
  • Item number: 43016
  • Our price: 5,09 €
  • Manufacturer: ORIGINAL IMPERIUM
  • EAN number: 8033989142104
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock
5,09 €

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AUTOMEGA Expansion tank cap 3C0 121 321
Article number: 160055710
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  • Pressure [bar]: 1,6
  • Material: Plastic
  • Item number: 160055710
  • Our price: 5,39 €
  • Manufacturer: AUTOMEGA
  • EAN number: 2232390492450
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock (Item(s) left: 3)
5,39 €

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STARK Expansion tank cap 3C0 121 321
Article number: SKVK-1960011
Reviews - 2
  • Material: Plastic
  • Pressure [bar]: 1,6
  • Thread Type: External Thread
  • Item number: SKVK-1960011
  • Our price: 6,05 €
  • Manufacturer: STARK
  • EAN number: 4059191777624
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock
6,05 €
(Price per item)

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METZGER Expansion tank cap 3C0 121 321
Article number: 2140113
Reviews - 2
  • Pressure [bar]: 1,6
  • Material: Plastic
  • Item number: 2140113
  • Our price: 6,11 €
  • Manufacturer: METZGER
  • EAN number: 4250032676445
  • Condition: New
  • Reference number OEM: 3C0121321
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6,11 €

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NTY Expansion tank cap 3C0 121 321
Article number: CCK-VW-007
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  • Fabrication Number: CCK-VW-007
  • Item number: CCK-VW-007
  • Our price: 6,83 €
  • Manufacturer: NTY
  • EAN number: 5902048294937
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock (Item(s) left: 1)
6,83 €

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  • Height [mm]: 29
  • Colour: black
  • Material: Plastic
  • Inner Diameter [mm]: 37,5
  • Diameter [mm]: 80
  • Opening Pressure [bar]: 1,6
  • Colour Coding: black
  • Thread Size 1: M3
  • Item number: 03341
  • Our price: 7,70 €
  • Manufacturer: Metalcaucho
  • EAN number: 221134115378481153784
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock (Item(s) left: 1)
7,70 €

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  • Material: Plastic
  • Colour: black
  • Opening Pressure [bar]: 1,6
  • Supplementary Article / Supplementary Info: with seal
  • Mounting Type: Screw Connection
  • Thread Type: External Thread
  • Item number: 113 866
  • Our price: 7,88 €
  • Manufacturer: TOPRAN
  • EAN number: 1093730000012
  • Condition: New
  • Reference number OEM: 3C0121321
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Additional information

Any and all spare parts we supply are solely intended for the designated purpose as defined by us. Installation by trained personnel only. Our products are usually supplied without assembly instructions. Installation in vehicles other than those specified by us may lead to the exclusion of warranty.

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In stock
7,88 €

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METZGER Expansion tank cap 3C0 121 321
Article number: 2140435
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  • Pressure [bar]: 1,6
  • Material: Plastic
  • Version: AM
  • Item number: 2140435
  • Our price: 7,93 €
  • Manufacturer: METZGER
  • EAN number: 4062101224248
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock
7,93 €

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CALORSTAT by Vernet Expansion tank cap 3C0 121 321
Article number: RC0162
Reviews - 2
  • Pressure [bar]: 1,6
  • Item number: RC0162
  • Our price: 8,90 €
  • Manufacturer: CALORSTAT by Vernet
  • EAN number: 3531650035984
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock
8,90 €

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  • Colour: black
  • Material: Plastic
  • Opening Pressure [bar]: 1,6
  • Weight [kg]: 0,062
  • for OE number: 2Q0 121 321 A
  • Item number: 30 10 3522
  • Our price: 9,30 €
  • Manufacturer: SWAG
  • EAN number: 4054228035227
  • Condition: New
  • Reference number OEM: 3C0121321
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Additional information

These products are designed to be used as originally These products are designed to be used as originally intended and not modified for purpose. Please ensure the intended and not modified for purpose. Please ensure the products are installed by a competent individual. N.B. products are installed by a competent individual. N.B. products are usually supplied without fitting instructions. products are usually supplied without fitting instructions.

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In stock (Item(s) left: 5)
9,30 €

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METZGER Expansion tank cap 3C0 121 321
Article number: 2140433
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  • Pressure [bar]: 1,6
  • Material: Plastic
  • Version: OE
  • Item number: 2140433
  • Our price: 10,20 €
  • Manufacturer: METZGER
  • EAN number: 4062101221537
  • Condition: New
  • Reference number OEM: 3C0121321
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10,20 €

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DAYCO Expansion tank cap 3C0 121 321
Article number: DRC057
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  • Pressure [bar]: 1,6
  • Item number: DRC057
  • Our price: 10,90 €
  • Manufacturer: DAYCO
  • EAN number: 2242197819860
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock (Item(s) left: 2)
10,90 €

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QUINTON HAZELL Expansion tank cap 3C0 121 321
Article number: FC543
Reviews - 1
  • Material: Plastic
  • Pressure [bar]: 1,6
  • Colour: black
  • Item number: FC543
  • Our price: 11,16 €
  • Manufacturer: QUINTON HAZELL
  • EAN number: 5050438433999
  • Condition: New
  • Reference number OEM: 3C0121321
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11,16 €

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BUGIAD Expansion tank cap 3C0 121 321
Article number: BSP25109
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  • Opening pressure (21) [bar]: 1,6
  • Mounting Type: Screw Connection
  • Material: Plastic
  • Item number: BSP25109
  • Our price: 13,99 €
  • Manufacturer: BUGIAD
  • EAN number: 4043193251091
  • Condition: New
  • Reference number OEM: 3C0121321
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13,99 €

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VAICO Expansion tank cap 3C0 121 321
Article number: V10-0890
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  • Colour: black
  • Material: Plastic
  • Pressure [bar]: 1,6
  • Weight [kg]: 0,06
  • Packaging width [cm]: 8
  • Packaging height [cm]: 4
  • Supplementary Info: Original VAICO Quality
  • Packaging Depth [cm]: 8
  • Item number: V10-0890
  • Our price: 15,44 €
  • Manufacturer: VAICO
  • EAN number: 4046001545429
  • Condition: New
  • Reference number OEM: 3C0121321
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Additional information

In the warranty, we always make a distinction between wear Products supplied by us are without exception intended for parts and vehicle parts. All wear parts are subject to a the designated use. Please note that our products are usually delivered without reduced warranty period and a maximum mileage.

installation instructions. Brake components such as brake disks, brake pads, etc. Installation may only be carried out by trained specialist maximum of 1000 km (break-in period). Therefore, warranty personnel. claims for brake parts are only reviewed with an There is no guarantee for inappropriate, improper or installation invoice and a record of the wheel hub run-out unintended use.

measurement, including photos.

For brake disks and brake pads, the break-in requirements specified by the vehicle manufacturer must be observed.

When replacing brakes, the chassis components must always be checked with regard to clearance and the wheel hub with regard to wobble, and the appropriate documentation must be produced.

If the vehicle is no longer in its original condition due to tuning work such as wheel accessories and tracking plates, the entitlement to make warranty claims is lost due to third-party work. The same warranty claims are lost if the vehicle is used for motor sports or similar events.

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15,44 €

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VEMA Expansion tank cap 3C0 121 321
Article number: 15916
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  • Weight [g]: 65
  • Pressure [bar]: 1,4
  • Item number: 15916
  • Our price: 23,40 €
  • Manufacturer: VEMA
  • EAN number: 2244259043948
  • Condition: New
  • Reference number OEM: 3C0121321
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23,40 €

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UNIGOM Expansion tank cap 3C0 121 321
Article number: 220185
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  • Item number: 220185
  • Our price: 44,52 €
  • Manufacturer: UNIGOM
  • EAN number: 224730201486042014860
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock (Item(s) left: 2)
44,52 €

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BIRTH 80695 BIRTH 80695 Expansion tank cap 3C0121321
BIRTH Expansion tank cap 3C0 121 321
Article number: 80695
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  • Weight [g]: 55
  • Fitting Position: Front Axle, Upper
  • Pressure [bar]: 1,6
  • Item number: 80695
  • Our price: 45,61 €
  • Manufacturer: BIRTH
  • EAN number: 1000000272575
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock (Item(s) left: 1)
45,61 €

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  • Height [mm]: 29
  • Colour: black
  • Material: Plastic
  • Inner Diameter [mm]: 37,5
  • Diameter [mm]: 80
  • Opening Pressure [bar]: 1,6
  • Thread Size 1: M3
  • Item number: 15181
  • Our price: 51,11 €
  • Manufacturer: FARE SA
  • EAN number: 8435392051811
  • Condition: New
  • Reference number OEM: 3C0121321
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51,11 €

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  • Supplementary Article / Supplementary Info Info 2: with sealing plug
  • Weight [g]: 503
  • Item number: 44107
  • Our price: 18,65 €
  • Manufacturer: ORIGINAL IMPERIUM
  • EAN number: 8033989190754
  • Condition: New
  • Reference number OEM: 3C0121321
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18,65 €

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Borsehung Coolant expansion tank 3C0 121 321with lid
Article number: B11940
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  • Supplementary Article / Supplementary Info Info 2: with lid
  • Item number: B11940
  • Our price: 21,08 €
  • Manufacturer: Borsehung
  • EAN number: 4251475121097
  • Condition: New
  • Reference number OEM: 3C0121321
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21,08 €

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Borsehung Coolant expansion tank 3C0 121 321with lid
Article number: B11942
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  • Supplementary Article / Supplementary Info Info 2: with lid
  • Item number: B11942
  • Our price: 24,60 €
  • Manufacturer: Borsehung
  • EAN number: 4251475121110
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock (Item(s) left: 6)
24,60 €

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Borsehung Coolant expansion tank 3C0 121 321with lid
Article number: B11941
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  • Supplementary Article / Supplementary Info Info 2: with lid
  • Item number: B11941
  • Our price: 25,48 €
  • Manufacturer: Borsehung
  • EAN number: 4251475121103
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock (Item(s) left: 4)
25,48 €

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  • Supplementary Article / Supplementary Info Info 2: with sealing plug
  • for OE number: 5Q0121407G
  • Weight [g]: 440
  • Item number: 44221
  • Our price: 25,83 €
  • Manufacturer: ORIGINAL IMPERIUM
  • EAN number: 8045757552701
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock (Item(s) left: 1)
25,83 €

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  • Supplementary Article / Supplementary Info Info 2: with sealing plug
  • Weight [g]: 772
  • Item number: 44223
  • Our price: 28,83 €
  • Manufacturer: ORIGINAL IMPERIUM
  • EAN number: 8045759552723
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock (Item(s) left: 6)
28,83 €

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  • Supplementary Article / Supplementary Info Info 2: with sealing plug
  • for OE number: 1S0121407E
  • Weight [g]: 349
  • Item number: 44220
  • Our price: 30,49 €
  • Manufacturer: ORIGINAL IMPERIUM
  • EAN number: 8045756552696
  • Condition: New
  • Reference number OEM: 3C0121321
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30,49 €

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Borsehung Coolant expansion tank 3C0 121 321with lid
Article number: B11939
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  • Supplementary Article / Supplementary Info Info 2: with lid
  • Item number: B11939
  • Our price: 35,84 €
  • Manufacturer: Borsehung
  • EAN number: 4251475121080
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock (Item(s) left: 1)
35,84 €

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  • Supplementary Article / Supplementary Info Info 2: with sealing plug
  • Weight [g]: 1291
  • Item number: 44475
  • Our price: 39,51 €
  • Manufacturer: ORIGINAL IMPERIUM
  • EAN number: 803398964673
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock (Item(s) left: 1)
39,51 €

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  • Supplementary Article / Supplementary Info: with coolant level sensor
  • Supplementary Article / Supplementary Info Info 2: with sealing plug
  • Weight [g]: 854
  • Component Number: 2
  • Item number: 44464
  • Our price: 41,55 €
  • Manufacturer: ORIGINAL IMPERIUM
  • EAN number: 8052585620984
  • Condition: New
  • Reference number OEM: 3C0121321
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In stock (Item(s) left: 2)
41,55 €

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