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Engine Coolant Water Pump 03L121011P For Audi A4 B8 A6 C7 VW Passat B7 CC 2.0 TDI
The engine coolant water pump with OEM part number 03L 121 011 P (also written as 03L121011P) is a critical component of the cooling system for a wide range of Volkswagen Group vehicles equipped with the 2.0 TDI Common Rail (CR) diesel engine from the EA288 engine family.
This mechanical water pump is driven by the engine's toothed timing belt and features a high-quality cast aluminium housing with an integrated eight-blade plastic impeller. The pump works by drawing coolant from the engine block and circulating it through the radiator, where heat is dissipated before the coolant returns to the engine.
Part Number:
03L121011P
Product Name:
Engine Coolant Water Pump
Car Model:
Audi A4 B8 A6 C7 VW Passat B7
Engine Model:
EA188 / EA288
Condition:
100% Brand New
Size:
Standard
Material:
High-strength aluminum alloy & precision bearings
Cooling Type:
Engine coolant circulation
OE Cross-Reference & Supersession Information
The 03L 121 011 P water pump belongs to a larger family of OE numbers that are interchangeable for the 2.0 TDI CR engine family.
Part Number
Status / Application
03L 121 011
Original base number
03L 121 011 C
Interchangeable variant
03L 121 011 H
Interchangeable variant
03L 121 011 J
Interchangeable variant
03L 121 011 N
Interchangeable variant
03L 121 011 P
This product -- active production variant
03L 121 011 PX
Remanufactured / service variant
03L 121 011 Q
Later interchange number
Vehicle Applications
This VW / Audi water pump 03L121011P directly replaces the factory sealing component in the following configurations:
Volkswagen Applications
Model / Generation
Years
Engine Code(s)
Passat B7 (North America)
2012-2014
CKRA (2.0L TDI)
Passat B7 (Europe)
2008-2014
2.0L TDI CR
Passat CC
2009-2016
2.0L TDI CR
Golf VI (5K1)
2009-2012
2.0L TDI CR (GTD)
Audi Applications
Model / Generation
Chassis Code
Years
A4 B8
8K
2007-2015
A4 B8 Avant
8K
2008-2015
A5 8T
8T
2007-2016
A6 C7
4G
2011-2018
Features & Benefits
OE-Specification Design: Dimensioned to exact factory specifications for 2.0L TDI CR engine with 19-tooth pulley and 8-blade impeller
Premium Materials: Cast aluminium housing with ball/ball bearing type for smooth, long-lasting rotation
Direct OE Number Match: Matches exact OE numbers listed in VW, Audi, SEAT, and Škoda electronic parts catalogues
Wide Cross-Reference Availability: Cross-references to Febi Bilstein 36048, Pierburg 7.07152.05.0, and Graf PA1089
Certified Manufacturing: Produced under IATF 16949 and ISO 9001 certified quality management systems
Quality Control & Verification
QC Item
Verification Method
Cast aluminium housing integrity
Pressure-tested for porosity, cracks, or voids
Impeller runout
Dial gauge measurement within OE tolerance
Bearing smoothness
Rotational torque check and noise inspection
Seal integrity
Air pressurisation test at 1.5 bar
Installation & Maintenance
⚠️ IMPORTANT: The 03L 121 011 P water pump is driven by the timing belt. When replacing the water pump, the timing belt should also be replaced along with the belt tensioner and all associated idler pulleys. Failure to follow this recommendation risks belt failure and engine damage.
Recommended Replacement Indicators
Symptom
Diagnosis
Coolant leak through the weep hole
Internal shaft seal failure
Play at water pump pulley
Worn bearing
Squeaking noise from pump area at idle
Bearing wear or pulley misalignment
Engine temperature rising above normal
Insufficient coolant flow
Maintenance Schedule
Service Item
Interval
Water pump and timing belt replacement
Every 5-6 years or 80,000-100,000 km
Replace engine coolant
Every 4 years or 60,000-80,000 km
Inspect for coolant loss and weeping pump
Monthly
Packaging & Supply
Individual packaging: Sealed in anti-static VCI bag, foam-lined carton
Carton dimensions: 18 × 15 × 12 cm (7 × 6 × 5 in)
Net weight: 0.725 kg; Gross weight: 1.0 kg
Master carton: 20 units per export carton
Lead time: 3-7 working days for stock orders
Minimum order quantity: 1 piece
Quick Summary: The VW/Audi water pump 03L 121 011 P is an OE-specification replacement for the 2.0L TDI CR engine in Audi A4 B8 (2007-2015), Audi A6 C7 (2011-2018), VW Passat B7 (2012-2014 CKRA), VW CC, and SEAT Alhambra, among others. Features cast aluminium housing, 8-blade impeller, 19-tooth pulley, and 64 mm impeller diameter.
Yimi(Guangzhou) Automotive Parts Co,Ltd
located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality automotiv... Yimi(Guangzhou) Automotive Parts Co,Ltd
located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality automotiv...