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Magneti Marelli Auxiliary Water Pump for EA111 1.4 TSI Twincharger with Post-Run Cooling Protection and OEM Standard Fitment

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Magneti Marelli Auxiliary Water Pump for EA111 1.4 TSI Twincharger with Post-Run Cooling Protection and OEM Standard Fitment

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Brand Name : YIMI

Model Number : VW Golf Jetta Audi 1.4 TSI Twincharger

Certification : ISO/TS16949

Place of Origin : China

MOQ : 2 pcs

Price : Negotiable

Payment Terms : T/T,Western Union

Supply Ability : 10000 pcs/month

Delivery Time : 5-8 Work Days

Packaging Details : Neutral Package or as customers’ request

Voltage : 12V DC

Material : High‑temp polymer housing, electric DC motor, sealed impeller

Flow rate : ≥ 800 L/h at 0.5 bar back pressure

Current draw : 2.0–3.5 A at full load

Noise level : ≤ 45 dB(A)

Operating temperature : –30°C to +130°C

Service life : 150,000 km+

Durability cycles : 5,000 on/off cycles

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03C121004J Magneti Marelli Water Pump For VW Golf Jetta Audi 1.4 TSI Twincharger
Product Overview

The Magneti Marelli Water Pump Assembly (OEM Numbers: 03C121004J / 03C 121 004 J) is a premium-quality, direct replacement auxiliary coolant pump engineered specifically for Volkswagen Group vehicles equipped with the EA111 1.4 TSI twincharger engine.

Core Function

Electronically controlled auxiliary water pump for EA111 1.4 TSI twincharger engines. Circulates coolant post-shutdown to prevent heat soak, protect turbocharger bearings, and maintain stable operating temperature.

Magneti Marelli Auxiliary Water Pump for EA111 1.4 TSI Twincharger with Post-Run Cooling Protection and OEM Standard Fitment
Part Number: 03C121004J Product Name: Water Pump
Car Model: VW Golf Jetta Audi Engine Model: VW TSI Twincharger
Condition: 100% Brand New Size: Standard
Weight: Standard Origin: China Mainland
Main Market: Middle East, Asia, Africa, South America, North America & Europe
Package: Neutral Packing Or Make It As Requested
Material: High-strength aluminum alloy & precision bearings Cooling Type: Engine coolant circulation
Installation: Direct OEM replacement Quality Standard: OEM equivalent / ISO quality control
Key Features & Advantages
  • OE Quality: Manufactured by Magneti Marelli to strict OEM dimensional, electrical, and hydraulic standards
  • EA111 Twincharger Specific: Precisely engineered for 1.4 TSI twincharger engine architecture
  • Post-Run Cooling Protection: Prevents localized boiling and extends turbocharger life by up to 50,000 km
  • Prevents Limp Mode: Restores full cooling system functionality and clears associated DTCs
  • Precision Electrical Interface: 2-pin connector matches factory wiring harness
  • Sealed, Long-Life Electric Motor: Rated for >10,000 start-stop cycles
  • Direct Replacement: Simple unbolt-and-replace installation
  • Global Compatibility: Interchangeable with multiple OE part numbers
  • Long Service Life: Designed for 150,000 km+ of normal operation
  • Quality Certified: ISO 9001:2015 / IATF 16949 Certified manufacturing
Common Failure Symptoms & Diagnosis
Symptom Likely Cause Action
Gurgling / boiling sounds after engine shutdown Auxiliary pump not running — heat soak causing coolant to boil Replace pump; verify electrical supply
Check Engine Light with DTC P261A / P261B / P2681 Pump circuit open, short, or pump not responding Check fuse, relay, wiring; replace pump if seized
Turbocharger oil leak (seal failure) Excessive turbo bearing temperature due to inadequate post-run cooling Replace pump and turbocharger (if damaged)
No pump operation audible after engine off Pump motor seized or electrical failure Replace pump; inspect relay and fuse
Engine overheats only in stop-start traffic Auxiliary pump not providing supplemental coolant flow Replace pump; flush cooling system
Intermittent coolant level warnings Pump seal leaks causing slow coolant loss Replace pump and O-ring; inspect hoses
Packaging & Supply
  • Individual Packaging: Factory-sealed in anti-static/moisture-barrier bag with OE-style part labeling
  • Wholesale/Bulk Orders: Available in case packs (10, 20, 50 units) with pallet pricing for volume orders
  • Customization: Neutral or private-label retail packaging available for volume wholesale orders
  • Fast Shipping: Ready stock for immediate dispatch worldwide
  • Wholesale Support: Long-term supply agreements and tiered commercial pricing available
Inquiry

For pricing, availability, or bulk purchase of the Magneti Marelli Auxiliary Water Pump 03C121004J for VW EA111 1.4 TSI Twincharger applications, please contact our sales team for a competitive wholesale quote and expert technical support. We respond to all inquiries within 24 hours.


Product Tags:

Magneti Marelli auxiliary water pump EA111

      

VW 1.4 TSI twincharger water pump

      

OEM standard auxiliary pump post-run cooling

      
Quality Magneti Marelli Auxiliary Water Pump for EA111 1.4 TSI Twincharger with Post-Run Cooling Protection and OEM Standard Fitment for sale

Magneti Marelli Auxiliary Water Pump for EA111 1.4 TSI Twincharger with Post-Run Cooling Protection and OEM Standard Fitment Images

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