03C127026D Fuel Pump For VW Jetta 2006-2013 Audi A3 1.4 TSI 03C 127 026 D
Product Overview
A precision-engineered mechanical high-pressure fuel pump that generates the extreme fuel pressure (up to 35MPa) required for modern 1.2/1.4 TSI/TFSI direct injection engines. Converts camshaft rotation into high-pressure fuel delivery to the common rail, ensuring precise injection timing and optimal combustion for EA111 engines.
The High Pressure Fuel Pump (OEM Numbers: 03C127026D, 03C127026E, 03C127026C) is a premium-quality, direct replacement fuel system component engineered for the Volkswagen EA111 1.2 TSI and 1.4 TSI/TFSI engine families.
Technical Specifications
| Part Number |
03C127026D 03C 127 026 D |
| Product Name |
Ring Pinion |
| Car Model |
VW Jetta 2006-2013 Audi A3 |
| Engine Model |
EA111 |
| Condition |
100% Brand New |
| Material |
High-strength aluminum alloy & precision bearings |
| Cooling Type |
Engine coolant circulation |
| Quality Standard |
OEM equivalent / ISO quality control |
How It Works – Mechanical Single-Piston Design
The pump is bolted directly to the cylinder head and driven by a dedicated camshaft lobe. As the cam lobe rotates, it compresses a spring-loaded piston inside the pump. The piston draws low-pressure fuel from the tank and compresses it to the high pressures required for common rail injection. A built-in fuel metering valve regulates the amount of fuel delivered to the rail based on ECU demand.
Application – EA111 1.2/1.4 TSI/TFSI
The EA111 engine family, including the 1.4 TSI (CAXA, CAXC, CAVA, CAVD) and 1.2 TSI (CBZA, CBZB) variants, was widely used in Volkswagen Group vehicles. The original Hitachi-sourced high-pressure pump is a known wear item that can fail due to internal piston or seal wear.
Note: This pump is driven directly by the camshaft and is not to be confused with the electric in-tank transfer pump. Professional installation is required; a new high-pressure fuel line should be used, and the low-pressure fuel system must be purged of air before initial start.
Key Features & Advantages
- OE-Quality Direct Replacement: Manufactured to meet or exceed original equipment specifications, ensuring perfect fit and seamless integration
- Restores Engine Performance: Eliminates symptoms like extended cranking time, engine hesitation, power loss, and misfires
- Prevents Costly Engine Damage: Ensures proper seal to protect engine from internal contamination and fuel system failure
- High-Pressure Precision: Designed to generate fuel pressures up to 200 bar for optimal combustion and fuel economy
- Direct Fitment: Simple bolt-on replacement with all required O-rings and seals included
- Rigorous Quality Control: Each pump undergoes testing to ensure consistent fuel pressure and long service life
- Comprehensive Vehicle Coverage: Fits wide range of VAG vehicles including Volkswagen, Audi, Seat, and Skoda models
- Long Service Life: Constructed from high-strength materials to withstand high pressures and rapid cycling
- Wholesale Advantage: Available in bulk packs for workshops and distributors
- ISO 9001:2015 / IATF 16949 Certified: Manufacturing meets international automotive quality standards
Quality Control
- Material Verification: Components tested to meet OE standards for pressure and wear resistance
- Dimensional Accuracy: Critical mounting points verified against OE blueprints using CMM equipment
- Pressure Calibration: Sample units tested to validate pressure output up to 200 bar
- Leak Testing: 100% pressure-tested to guarantee zero fuel leakage
- Endurance Testing: Sample units subjected to 500,000+ cycles to simulate full service life
- IATF 16949 / ISO 9001:2015 Certified: Facilities meet international quality management standards
- Visual Inspection: 100% inspected for casting porosity, thread damage, and sealing surface defects
- Packaged Safely: Individually sealed in moisture-barrier bags with protective caps
Packaging & Supply
- Individual Packaging: Each pump sealed in moisture-barrier bag with OE-style labeling
- Wholesale / Bulk Orders: Available in case packs (5, 10, 20, 50, 100 units) with pallet pricing
- Customization: Neutral or private-label retail packaging available for volume orders
- Fast Shipping: Ready stock for immediate dispatch worldwide via express courier or sea freight
- Wholesale Support: Long-term supply agreements and drop-shipping options available