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Additional Water Pump 06H121601N Audi A7 4K C8 3.0 TFSI 55 TFSI Bypass OE
  • Additional Water Pump 06H121601N Audi A7 4K C8 3.0 TFSI 55 TFSI Bypass OE
  • Additional Water Pump 06H121601N Audi A7 4K C8 3.0 TFSI 55 TFSI Bypass OE
Additional Water Pump 06H121601N Audi A7 4K C8 3.0 TFSI 55 TFSI Bypass OE
45,00 zł

Electric Auxiliary Water Pump / Turbocharger Cooling Circulation Pump – 06H121601N

Original electric auxiliary coolant pump (auxiliary circulation pump for the turbocharger cooling system, coolant recirculation after engine shutdown, and heater circuit), designed for Audi A7 Sportback (4K / 4K8 generation) and Audi A6 C8 (4K2 / 4K5 / 4KA type) with 3.0 V6 TFSI (55 TFSI designation / EA839 family / DLZA, DKMB, and related codes) turbocharged petrol engines based on the modular MLBevo longitudinal platform.

VAG cooling system component manufactured for Audi by Pierburg. Equipped with a quiet 12V brushless electric motor and a magnetically coupled impeller separated from the coolant chamber, permanently eliminating the problem of shaft seal leaks. It is responsible for the forced circulation of coolant (G12evo / G13) after the power unit is switched off (so-called post-cooling of the turbocharger located in the "hot-V" fork, preventing oil from burning on the bearings) and stabilizes the cabin heater performance at idle and low engine speeds.

Technical specifications:

  • Catalog part number (OE): 06H121601N / 06H 121 601 N (interchangeable with series numbers 06H121601, 06H121601M, 06H121601K, 059121012B)

  • System / Category: Engine cooling system (Engine Cooling System / Auxiliary Coolant Pump)

  • Function: Electric auxiliary coolant circulation pump (Electric Coolant Circulation Pump)

  • Operating voltage: 12V

  • Electrical connector: Standard VAG 2-pin sealed plug

  • Dedicated engine: 3.0 V6 TFSI (55 TFSI / EA839 family) and related 2.9 V6 TFSI units

  • Construction: Sealed housing made of high-impact composite resistant to high temperatures and glycol, with integrated cooling system hose ports

  • Mounting side: Engine compartment – 3.0 V6 TFSI engine cooling accessory area

  • Steering side: Left (LHD – European version) and Right (RHD) – universal component

  • Condition: Original used part (100% functional, electrically and pressure tested under load – the motor runs quietly and evenly, the impeller rotates without resistance, the housing is sealed without cracks, the connector pins are clean and uncorroded)

  • Manufacturer: Audi AG / VAG / Pierburg (Original OEM)

Main application:

  • Audi:

    • A7 Sportback (4K8 type) – model years 2018 to 2026 (3.0 TFSI / 55 TFSI engines)

    • S7 Sportback (4K8 type) – model years 2019 to 2026 (2.9 TFSI engines)

    • A6 / A6 Avant / Allroad (4K2 / 4K5 / 4KA - C8 type) – model years 2018 to 2026 (3.0 TFSI / 55 TFSI engines)

    • S6 Avant / Saloon (4K - C8 type) – model years 2019 to 2026 (2.9 TFSI engines)

    • A8 / S8 (4N2 / 4N8 - D5 type) – 3.0 TFSI (55 TFSI) engines

    • Q7 / Q8 (4M / 4MN type) – 3.0 TFSI (55 TFSI) engines

Fitment guarantee and VIN verification

Each pump undergoes verification on a test stand under load and a coolant jacket leak test before shipping.

Fitment / installation tip: In 3.0 TFSI (EA839) engines, a properly functioning auxiliary pump protects the turbocharger's critical thermal node from thermal shock after spirited driving. Using an original OEM pump guarantees proper communication with the engine control unit and no OBD diagnostic errors. Before purchase, we recommend comparing the full OE number with the index (N) on the old pump's label or verifying it using the vehicle's VIN.

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