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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

MOQ:	2 pcs
Price:	Negotiable
Standard Packaging:	Neutral Package or as customers’ request
Delivery Period:	5-8 Work Days
Payment Method:	T/T,Western Union
Supply Capacity:	10000 pcs/month

Detail Information

Product Description

Detail Information

Place of Origin

China

Brand Name

Certification

ISO/TS16949

Model Number

VW Golf Jetta Audi 1.4 TSI Twincharger

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

Highlight:

Magneti Marelli auxiliary water pump EA111

VW 1.4 TSI twincharger water pump

OEM standard auxiliary pump post-run cooling

Product Description

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.

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.

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Products

MOQ:	2 pcs
Price:	Negotiable
Standard Packaging:	Neutral Package or as customers’ request
Delivery Period:	5-8 Work Days
Payment Method:	T/T,Western Union
Supply Capacity:	10000 pcs/month

Detail Information

Product Description

Detail Information

Place of Origin

China

Brand Name

YIMI

Certification

ISO/TS16949

Model Number

VW Golf Jetta Audi 1.4 TSI Twincharger

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

Minimum Order Quantity:

2 pcs

Price:

Negotiable

Packaging Details:

Neutral Package or as customers’ request

Delivery Time:

5-8 Work Days

Payment Terms:

T/T,Western Union

Supply Ability:

10000 pcs/month

Highlight

Magneti Marelli auxiliary water pump EA111

VW 1.4 TSI twincharger water pump

OEM standard auxiliary pump post-run cooling

Product Description

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

Product Overview

Core Function

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

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

Magneti Marelli auxiliary water pump EA111

VW 1.4 TSI twincharger water pump

OEM standard auxiliary pump post-run cooling

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Isuzu Cars Parts

Isuzu Engine Parts

Isuzu Chassis Parts

ISUZU Truck Parts

VW Car Parts

AUDI Car Parts

QINGLING ISUZU Parts

NISSAN Spare Parts

MITSUBISHI Auto Parts

FUSO Truck Parts

TOYOTA Auto Parts

HINO Truck Parts

HONDA Auto Parts

MAZDA Spare Parts

JAC Spare Parts

JMC Spare Parts

FORD Auto Parts

HYUNDAI Auto Parts

KIA Auto Parts

Other Auto Parts

Magneti Marelli auxiliary water pump EA111

VW 1.4 TSI twincharger water pump

OEM standard auxiliary pump post-run cooling

Volkswagen Leak Detection Pump 7L0906243D,

audi leak detection pump 7L0906243D,