078121004 Automotive Water Pump for AUDI 100
Product: Automotive Water Pump
Primary OE: 078121004
Item code: AD01017-012
Cross-reference numbers:
078121004
078121004B
078121004C
078121004A
078121004CV
078121004CX
078121004BX
078121004BV
Brand: AUDI
Model: 100
Application reference: AUDI OE-reference cooling-system application; confirm by VIN and removed-part comparison.
Inspection focus: housing profile, mounting flange, impeller or drive interface, ports, gasket face and connector where fitted
Supply note: State quantity, destination and packing requirements in the enquiry.
078121004 is listed for professional cooling-system service. This AUDI 100 record identifies SKU AD01017012 through OE evidence. Buyers can therefore separate 078121004 from similar-looking pumps.
Application approval for 078121004 should combine the parts catalogue, VIN and removed component. The workbook provides 100 as a model reference, but SKU AD01017012 still requires vehicle-specific confirmation.
Product Technical Specifications
| Product type | Automotive Engine Water Pump |
|---|---|
| Primary OE reference | 078121004 |
| Internal item code | AD01017-012 |
| Vehicle brand | AUDI |
| Model filter | 100 |
| Cross-reference numbers | 078121004 / 078121004B / 078121004C / 078121004A / 078121004CV / 078121004CX / 078121004BX / 078121004BV |
| Verification method | OE catalogue, VIN, production data and removed-pump comparison |
Cooling-System Commissioning
Workshop acceptance of AD01017012 should cover bearing feel, flange runout and undamaged ports. Once 078121004 is fitted, monitor temperature, coolant level and unusual noise.
Prepare the cooling system before installing 078121004: remove debris, inspect the thermostat and confirm hose condition. Recheck AD01017012 for seepage after the first heat cycle.
Confirming the Correct Water Pump
Fitment review for 078121004 should combine AUDI vehicle data with a side-by-side inspection of AD01017012. Record the VIN, engine specification and original pump marking.
Validate 078121004 using the AUDI VIN catalogue, not a generic model-year list. Compare AD01017012 with the original component before installation approval.
The workbook names 100 as an application clue for 078121004; vehicle-specific catalogue evidence still governs the final match.
Wholesale Supply Information
Begin the commercial check with 078121004 and AD01017012. Yongshang Auto can discuss AUDI sample inspection, export cartons and mixed cooling-system orders.
A complete request for AD01017012 includes 078121004, quantity, packing format and delivery destination. Buyers may submit the removed AUDI pump images for a technical cross-check.
Water Pump Function in the Cooling Circuit
Heat rejection on the undefined platform requires a sound water pump. Reference 078121004 directs coolant around the circuit so absorbed heat can be released at the radiator.
The undefined cooling loop depends on 078121004 to maintain coolant movement. A correctly matched pump supports heat transfer during idle, acceleration and steady-speed driving.
Pump Geometry Inspection
Inspect AD01017012 at every installation interface: flange holes, coolant ports, hub position and sealing face. Reject the match if 078121004 requires forced alignment.
Set 078121004 beside the removed pump and compare the housing outline, bolt pattern and gasket seat. The 2 AD01017012 gallery images provide viewing references, but measurements remain decisive.
Water Pump Fitment FAQ
What does 078121004 do in the cooling system?
OE 078121004 identifies an engine water pump. In the AUDI 100 cooling circuit, 078121004 circulates coolant between heat-generating and heat-rejecting components.
What fitment review is recommended for 078121004?
Approve 078121004 with VIN and catalogue data. Match SKU AD01017012 against the removed pump. Production changes can alter 078121004 mounting or drive details.
Which physical details should match on 078121004?
Compare the 078121004 housing, flange, ports, hub or pulley, impeller side and sealing face. Use the AD01017012 gallery for orientation. Measure 078121004 before installation.
When does the vehicle need a closer inspection of 078121004?
Inspect 078121004 after coolant leakage, bearing noise, overheating or unstable circulation. During AD01017012 diagnosis, test belts, hoses, thermostat and coolant condition. Do not assume 078121004 is the only cause.
Can Yongshang Auto prepare a wholesale offer for 078121004?
Request 078121004 pricing with item code AD01017012. Add quantity, destination and packaging instructions. Send original-part evidence when 078121004 needs application review.
Request Pricing for 078121004
Send 078121004 quantity and destination to Yongshang Auto. Identify the request with SKU AD01017012. Add packing details and original-pump evidence when 078121004 needs application review.
Ordering safeguard: 078121004 identifies the reference, not guaranteed fitment. Confirm SKU AD01017012 through VIN, engine data and removed-pump comparison.
