6Q0 121 407 Coolant Expansion Tank for VOLKSWAGEN
Product: Coolant Expansion Tank
Primary OE: 6Q0 121 407
Item code: VM01015-012
Cross-reference numbers:
6Q0 121 407
6Q0 121 407A
6Q0 121 407B
Brand: VOLKSWAGEN
Application reference: VOLKSWAGEN OE-reference application; confirm by VIN and removed-part comparison.
Inspection focus: cap neck, hose ports, level-sensor provision, mounting tabs and shell seams
Supply note: Request sample approval before committing to a scheduled production program.
6Q0 121 407 is intended for OE-number-based vehicle parts selection. This VOLKSWAGEN record identifies SKU VM01015012 by OE evidence. Buyers can therefore separate 6Q0121407 from similar-looking reservoirs.
Catalogue supersessions should be verified before a bulk order is released. For 6Q0121407, no unverified model is published. The blank model filter protects SKU VM01015012 from unsupported fitment claims.
Product Technical Specifications
| Product type | Coolant Expansion Tank |
|---|---|
| Primary OE reference | 6Q0 121 407 |
| Internal item code | VM01015-012 |
| Vehicle brand | VOLKSWAGEN |
| Model filter | Not specified; verify by VIN and original part |
| Cross-reference numbers | 6Q0 121 407 / 6Q0 121 407A / 6Q0 121 407B |
Tank Shape and Connection Mapping
Place 6Q0121407 beside the removed tank before installation.
On SKU VM01015012, compare cap neck, hose ports, level-sensor provision, mounting tabs and shell seams.
Every 6Q0121407 connection should align without body stress.
Review 3 square images showing SKU VM01015012 from available angles.
Final approval of 6Q0121407 still requires physical measurement.
Incoming Inspection Priorities
Inspect 6Q0121407 before transferring service hardware.
Reject SKU VM01015012 if ports, seams or brackets are damaged.
Keep 6Q0121407 sealed against workshop dust before installation.
During VM01015012 replacement, bleed the cooling circuit correctly and inspect every joint at operating temperature.
If coolant staining, pressure loss, brittle plastic or recurring low-level warnings continues, test the circuit around 6Q0121407.
Operating Role of the Reservoir Assembly
OE 6Q0121407 identifies a coolant expansion tank for the VOLKSWAGEN engine cooling circuit.
Inside that circuit, 6Q0121407 provides reserve volume for thermal expansion and returns coolant as the system cools.
SKU VM01015012 must keep coolant available without external leakage.
After installing 6Q0121407, observe level stability and connection dryness.
Catalogue and Physical Cross-Check
Begin 6Q0121407 verification with the complete OE reference.
Compare SKU VM01015012 against the original VOLKSWAGEN reservoir.
For 6Q0121407, record VIN, production date and catalogue conditions.
Cross references can locate VM01015012; they cannot guarantee interchange.
The model field for 6Q0121407 stays blank without dependable evidence.
Quotation Details for Buyers
Use 6Q0121407 as the principal purchasing reference.
Pair 6Q0121407 with internal item code VM01015012.
For SKU VM01015012, state quantity, destination and label requirements.
Yongshang Auto can review 6Q0121407 samples and export cartons.
VOLKSWAGEN distributors may request VM01015012 packing confirmation before shipment.
OE Reference Questions and Answers
What role does 6Q0 121 407 perform in a VOLKSWAGEN vehicle?
OE 6Q0121407 identifies the coolant expansion tank. In the VOLKSWAGEN system, 6Q0121407 provides reserve volume for thermal expansion and returns coolant as the system cools.
How is compatibility established for 6Q0 121 407?
Approve 6Q0121407 with VIN and production data. Match SKU VM01015012 directly against the removed tank. Regional changes can alter 6Q0121407 connection geometry.
Which photographed features help screen 6Q0 121 407?
On 6Q0121407, examine cap neck, hose ports, level-sensor provision, mounting tabs and shell seams. Use the VM01015012 gallery for orientation. Confirm 6Q0121407 dimensions on the vehicle.
What condition can make replacement necessary for 6Q0 121 407?
Inspect 6Q0121407 when the vehicle shows coolant staining, pressure loss, brittle plastic or recurring low-level warnings. During VM01015012 diagnosis, test nearby hoses, seals and sensors. Do not treat 6Q0121407 as the only possible cause.
What information speeds up sourcing of 6Q0 121 407?
Request 6Q0121407 pricing with item code VM01015012. Add quantity, destination and packaging instructions. Send original-part evidence when 6Q0121407 needs application review.
Discuss Supply of 6Q0 121 407
Send 6Q0121407 quantity and destination to Yongshang Auto. Identify the request with SKU VM01015012. Add packing details and original-part evidence when 6Q0121407 needs application review.
Catalogue notice: 6Q0121407 identifies the reference, not guaranteed fitment. Confirm SKU VM01015012 through VIN, chassis and removed-part comparison.
