High-pressure pump AUDI A8 D3 (4E2 / 4E8) 4.2 TDI Quattro 326 hp

The Audi 4.2 TDI Quattro 326 hp represents a segment where high-pressure fuel systems demand absolute reliability, whether for daily driving, performance tuning, or long-distance travel. This category addresses the needs of independent garages, DIY enthusiasts, and German-speaking buyers seeking remanufactured components that restore original engine behavior without the premium of new OEM parts. Here, precision matters: a failing pump disrupts combustion, triggers fault codes, and risks catastrophic injector damage if left unaddressed.

Our range is curated from European remanufacturers specializing in diesel injection components, ensuring each high-pressure pump undergoes rigorous testing for flow rate, pressure consistency, and leak integrity. The wholesale model bypasses traditional distributors, delivering calibrated units directly to workshops and retailers at competitive rates. This approach prioritizes compatibility and longevity, aligning with the demands of the 4.2 TDI’s high-performance V8 diesel architecture.

Professional uses by trade

Different users approach the high-pressure pump for the 4.2 TDI Quattro with distinct priorities: garages prioritize turnaround speed and bulk pricing, while DIY enthusiasts seek reliability and ease of installation. German buyers often demand documentation and traceability, reflecting the market’s emphasis on precision engineering and aftermarket support.

• Garagist: Replace the failing pump with a remanufactured Bosch 0445010119 to restore fuel pressure and clear engine fault codes P2563 or P2564 without risking injector damage.
• DIY enthusiast: Swap the old pump for a pre-tested remanufactured unit to avoid the cost of a dealership repair while maintaining the engine’s original performance characteristics.
• German buyer: Order the pump with full documentation to ensure compatibility with the 4.2 TDI Quattro’s 326 hp variant, including OEM reference verification and remanufacturing standards.
• Performance tuner: Use a high-pressure pump from a reputable remanufacturer to support increased fuel delivery demands when upgrading injectors or tuning the ECU for higher power output.
• Fleet manager: Stock remanufactured pumps as critical spares to minimize downtime for vehicles operating in high-mileage or heavy-duty conditions, ensuring consistent fuel system performance.
• Classic car restorer: Source a pump matching the original Bosch specifications to preserve the authenticity and reliability of a well-maintained 4.2 TDI Quattro without compromising on quality.
• Mechanic in training: Practice diagnosing high-pressure pump failures on this model to build expertise in diesel injection systems, using remanufactured units for hands-on learning without financial risk.
• Retailer: Offer customers a cost-effective alternative to OEM pumps by stocking remanufactured Bosch 0445010119 units, backed by technical documentation and bulk pricing incentives.

Range comparison

Below, you’ll find the remanufactured high-pressure pump options available for the Audi 4.2 TDI Quattro 326 hp, each listed with its OEM reference and intended use case. These units are sourced from European remanufacturers specializing in diesel injection components, ensuring compatibility and reliability.

How to choose

Selecting the right high-pressure pump for your Audi 4.2 TDI Quattro involves evaluating factors like remanufacturing quality, packaging integrity, and supplier reliability. Garages must prioritize units with documented testing, while DIY users benefit from clear compatibility notes and return policies.

1. Opt for pumps with documented pressure calibration tests to ensure they meet the 4.2 TDI’s 2,000+ bar fuel delivery requirements without deviation.
2. Choose units packaged in sealed, anti-static containers to prevent contamination during storage or transit, especially in humid or dusty environments.
3. Prioritize suppliers with a transparent remanufacturing process, including core inspection and pressure testing, to avoid premature failures.
4. Verify OEM reference compatibility (Bosch 0445010119) against your vehicle’s build year and engine code to prevent mismatches in fitment or performance.
5. Select pumps from suppliers offering bulk discounts for workshops, reducing per-unit costs while maintaining stock rotation efficiency.
6. Ensure the pump’s packaging includes a warranty certificate or return policy, providing recourse if the unit arrives damaged or incompatible.
7. For German buyers, confirm the supplier’s adherence to DIN standards or equivalent certifications, aligning with local expectations for precision engineering.

Storage & logistics

Storing high-pressure pumps for the 4.2 TDI Quattro requires controlled conditions to preserve their calibrated state and prevent seal degradation. Keep units in a climate-controlled environment, away from direct sunlight and temperature fluctuations, as extreme cold or heat can compromise the pump’s internal components. For workshops, store pumps in their original packaging or anti-static bags to protect against dust and moisture, which may corrode metal surfaces or degrade rubber seals over time. Rotate stock regularly to avoid obsolescence, especially for models with limited shelf life due to aging seals or internal wear. When handling, avoid dropping or jarring the pump, as internal components like the camshaft or plunger may shift, leading to pressure inconsistencies. Always inspect the packaging for damage before accepting delivery, and log the pump’s OEM reference and batch number for traceability in case of warranty claims or recalls.

Since 2026, our team has specialized in sourcing remanufactured high-pressure pumps for European diesel engines, including the Audi 4.2 TDI Quattro. We’ve seen firsthand how a failing pump can cripple a V8’s performance, which is why we prioritize units tested for pressure consistency and leak integrity before they reach your workshop.— autoKUR team

Related categories

Browse our other ranges:

• 4.2 TDI Quattro 320 hp
• 4.0 TDI Quattro 275 hp
• 3.0 TDI Quattro 233 hp
• 3.0 TDI Quattro 211 hp

Useful references

For regulatory and sector references, see Reglement (UE) 461/2010 — pieces de rechange et garantie constructeur.