Turbocharger AUDI A8 D5 (4N2 / 4N8 / 4NC / 4NL) 45 TDI Quattro 249 hp

The Audi 45 TDI Quattro 249 hp is a high-performance diesel engine known for its robustness, but even the most reliable turbos degrade over time. This category focuses on remanufactured turbochargers designed to restore lost power and efficiency without the expense of brand-new units. Whether you're a professional mechanic or a DIY enthusiast, finding the right turbo for your motorization requires precision in compatibility and quality in remanufacturing.

Our range is built around core turbos sourced from European suppliers, then disassembled, inspected, and rebuilt to OEM standards. The process includes replacing worn bearings, seals, and cartridges, followed by dynamic balancing and leak testing. This approach ensures durability while keeping costs predictable for workshops and private buyers alike.

Professional uses by trade

Different users approach turbo replacement with distinct priorities: garages prioritize turnaround time and bulk pricing, while DIYers value ease of installation and clear compatibility guides. Professionals also consider core deposit policies to streamline returns of faulty units.

• Le garagiste independant : Replace a failing turbo on a customer’s 45 TDI Quattro within a single workshop visit by ordering a pre-tested remanufactured unit.
• L'automobiliste depanne : Diagnose a sudden loss of power by swapping the turbo with a known-good remanufactured unit, avoiding costly dealership repairs.
• Le passionne qui fait lui-meme : Source a direct-fit turbo with clear OEM reference matches to ensure hassle-free installation in a weekend project.
• Der deutsche Kaeufer (DACH) : Purchase a turbo with German-language documentation and local return options for defective cores, simplifying cross-border logistics.
• Le garagiste independant : Stock a rotating inventory of remanufactured turbos to offer same-day replacements for common motorizations like the 45 TDI Quattro.
• L'automobiliste depanne : Verify turbo compatibility using the vehicle’s engine code and model year before ordering to prevent mismatched purchases.
• Der deutsche Kaeufer (DACH) : Request a turbo with a documented remanufacturing history to ensure compliance with local workshop standards.

Range comparison

Below, you’ll find the exact remanufactured turbos available for the Audi 45 TDI Quattro 249 hp, each listed with its OEM reference and core deposit policy.

How to choose

Selecting the right turbo depends on more than just the OEM reference; consider packaging, core return policies, and the remanufacturer’s reputation for consistency.

1. Opt for turbos packaged in sturdy, stackable boxes to protect internal components during transit and storage in a busy workshop.
2. Prioritize units with a documented remanufacturing process, including bearing replacement and dynamic balancing, for long-term reliability.
3. Check the core deposit fee upfront to avoid unexpected costs when returning the faulty turbo, especially for high-value motorizations.
4. Verify the turbo’s compatibility with your specific engine code and model year to prevent installation issues or performance mismatches.
5. Choose suppliers with a rotating stock of remanufactured turbos to ensure quick availability for urgent repairs.
6. Select turbos with clear labeling of OEM references and remanufacturing standards to streamline warranty claims if needed.
7. Favor remanufacturers with a track record in diesel applications, as these units undergo stricter testing for soot and carbon buildup.

Storage & logistics

For workshops, storing remanufactured turbos requires climate control to prevent moisture damage and vibration-resistant shelving to avoid misalignment of internal components. Label each box with the OEM reference, remanufacturing date, and core deposit policy to streamline inventory management. Avoid stacking heavy items on top of turbo boxes, as this can distort the housing or damage the CHRA. For private buyers, store the turbo in its original packaging until installation, ensuring the core is returned promptly to avoid additional fees.

Since 2026, our team has rebuilt turbos for over 1,500 motorizations, including the 45 TDI Quattro, by focusing on precision and traceability—every unit leaves our facility with a unique identifier to track its remanufacturing history.— autoKUR team

Related categories

Browse our other ranges:

• s8 Mild Hybrid 571 hp
• 60 TFSI Mild Hybrid 460 hp
• Fuel injector
• High-pressure pump
• Gasket kit
• Core deposit

Useful references

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