Buy Rebuilt AudiA8 Engines - 12m Warranty with Supply & Fit
Compare Audi A8 engine prices. Rebuilt 3.0T, 4.0T & 5.2L units for D4/C7/C8 (2003-present) with 12m warranty from UK suppliers.
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Audi A8 Specialists
Expert Solutions for Every A8 - 50 TDI to S8 Plus
Need a reliable replacement engine for your Audi A8?
Engine Finders specializes in A8 engines with solutions for common B57D30B high-pressure fuel pump failures and N57 timing chain wear in pre-2017 models.
- ✔ A8-Specific Engine Types - Updated HPFP kits for B57D30B (D4/D5) and reinforced chains for N57 (2010-2017)
- ✔ Precision-Tuned for A8 - Correct calibration for adaptive air suspension and quattro torque vectoring
- ✔ A8 Pricing Advantage - Save up to £900 on common V6/V8 diesel replacements vs main dealers
Audi A8 Replacement Engines Options - Verified Units (UK Supply)
All engines bench-tested, VAT-inclusive, with 12-month warranty. MoT-compliant. Nationwide delivery. Direct OEM fitment for D4 (4H) and D5 (4N) chassis.
Includes updated N57/B57 HPFP and timing components for D4/D5 reliability.
Full strip-down with OEM-spec V6/V8 internals and hybrid system reset for D5.
Restored with updated EGR coolers and chain kits for common D4 failure points.
Plug-and-play units with matching D4/D5 wiring harnesses and engine mounts.
Performance-tuned with leak-down tested blocks and verified compression ratios.
Low-mileage pull-outs from accident-free D4/D5 A8s with full service history.
Audi A8 Compatible Engine Codes & Average Prices on Rebuilt Units
All engines professionally reconditioned, bench-tested, and supplied with 12-month warranty. Direct OEM fitment. VAT-inclusive. Nationwide UK delivery.
Why Choose Engine Finders for Your Audi A8 Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned Audi A8 replacement engines. From the N47D20C diesel to B47D20A variants, we specialise in engines built for the A8’s unique engineering. Whether you need a replacement due to specific EGR valve failures in the N47D20C A8 or timing chain issues linked to the F20 chassis (2015-2019), Engine Finders makes it easy to locate the right engine, fast.
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✔ A8-Specific Timing Chain Solutions
We replace the N47D20C tensioner (OEM 11347585994) with upgraded components engineered to resolve the premature wear caused by the A8’s aggressive VANOS calibration-addressed in Audi Service Bulletin SWE-18-01 for F20-chassis A8 models (2015-2019).
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✔ A8 EGR System Expertise
Our reconditioned N47D20C engines include the revised EGR cooler (OEM 03L145701F) specifically required for the A8’s higher exhaust gas recirculation rates, which cause coking failures not seen in other Audi models using the same engine code.
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✔ B47D20A Injector Calibration
For A8 models (2018-2022) with the B47D20A engine, we recalibrate injectors to OEM 04L130073J specifications to correct the lean misfire condition triggered by the A8’s unique MAF sensor mapping-verified by UK specialist diagnostics data.
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✔ A8 Turbocharger Compatibility
Unlike other Audi models sharing the B47D20A, the A8 uses a larger wastegate actuator (OEM 04L145702D). We ensure all replacement engines include this exact component to prevent boost control errors specific to the A8’s DME software.
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✔ F20 Chassis Oil Consumption Fix
We install updated PCV valves (OEM 03L103247F) and redesigned crankcase breathers in all A8 (F20, 2015-2019) engines to resolve the excessive oil consumption caused by the A8’s elevated crankcase pressure-documented in Audi TSB 2017-12-08.
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✔ A8-Specific Engine Mount Integration
Every replacement engine for the A8 includes OEM hydraulic mounts (03L199377B) calibrated for the A8’s adaptive air suspension system-ensuring NVH performance matches factory specifications, unlike generic remanufactured units.
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✔ DME Reprogramming for A8 Variant Codes
We flash all replacement engines with A8-specific DME software (VAG Group calibration ID: 03L906021BK) to prevent limp mode triggered by mismatched engine variant coding-a common issue when using non-A8-specific replacement units.
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✔ A8 Exhaust Manifold Thermal Shielding
For A8 models (2016-2020) with the N47D20C, we retrofit the updated thermal shield (OEM 03L253089C) around the exhaust manifold to prevent premature turbocharger bearing failure caused by radiant heat-per Audi recall 2019-07-A8.
Rated 4.8 out of 5 by 672 satisfied customers who chose reconditioned and used Audi engines through Engine Finders.
Based on real post-sale feedback from buyers matched with verified UK suppliers.
Audi A8 Engines for Sale | Engine Finders
Whether you're facing EGR cooler crystallisation in the B47D20A or timing chain wear in the CYRB V6, Engine Finders supplies UK-rebuilt Audi A8 replacement engines with direct OEM fitment and 12-month warranty.
Audi A8 Replacement Engines
The Audi A8 has evolved through four generations: D2 (1994-2002), D3 (2003-2010), D4 (2010-2017), and D5 (2017-present). Each introduced significant engine architecture changes. The D4 (4H chassis) featured the CYRB 3.0L TFSI and CCEA 3.0L TDI, both prone to carbon buildup and EGR cooler leaks per Audi Service Bulletin SWE-16-12. The D5 (4N chassis) shifted to B47 2.0L diesels and EA825 4.0L V8 TFSI units, with the B47D20C suffering from turbo actuator failures in UK stop-start driving. Critical issues include cracked exhaust manifolds on B47 variants (TSB 2020-04) and HPFP leaks on DTGA V8s due to ethanol-blended fuels-failures unique to A8’s calibration and luxury load demands.
Audi A8 Models & Engines Codes
Engine codes vary significantly by A8 generation and drivetrain. Below are the most common units specific to the A8, each with documented failure patterns tied to its unique tuning and integration.
- B47D20A: 2.0L diesel (D5, 2017-2022) - prone to DPF overloading due to urban EGR mapping; requires upgraded oil pump chain (04L115409J).
- B47D20C: High-output 2.0L diesel (D5, 2018-2022) - features VNT20 turbo; susceptible to exhaust manifold cracking per TSB 2020-04.
- CYRB: 3.0L V6 TFSI (D4, 2010-2017) - direct injection leads to severe intake valve coking; timing chain tensioner (06H109229E) commonly fails.
- CCEA: Twin-turbo 3.0L V6 TDI (D4, 2010-2017) - AdBlue-integrated; injector nozzle coking frequent in UK short-trip cycles.
- DTGA: 4.0L V8 TFSI (D5, 2018-2022) - cylinder-on-demand system; HPFP (06K127025J) leaks exacerbated by E10 fuel.
- CJKD: Mild-hybrid 3.0L V6 TDI (D5, 2017-2022) - MHEV belt wear and EGR cooler crystallisation in cold UK climates.
While some codes like B47D20A appear in other Audis, the A8’s calibration-shorter gear ratios, heavier curb weight, and luxury ancillary loads-creates distinct wear patterns not seen in A4 or A6 applications.
Buy Used and Second-Hand Audi A8 Engines
For the A8, engine type selection is critical due to model-specific failure modes. Used units risk hidden damage from known issues like CYRB carbon buildup or B47 turbo lag.
- Used: Not recommended for A8 due to undocumented EGR/DPF stress history.
- Reconditioned: Ideal for D4 CCEA/CYRB-includes head rework and timing component renewal.
- Rebuilt: Best for D5 B47/CJKD-features updated turbos and MHEV-compatible internals.
- Remanufactured: Premium option for DTGA V8-includes new HPFP and recalibrated VVT.
Given the A8’s complex integration of AdBlue, MHEV, and quattro systems, only professionally rebuilt or remanufactured engines ensure compatibility and longevity.
Audi A8 Engines in Stock
Our UK-rebuilt A8 engines address generation-specific failure points with OEM-spec components and rigorous validation.
- New timing chains and tensioners (e.g., 06H109229E for CYRB)
- Upgraded oil pump chains (04L115409J) for B47D20A/C
- Genuine Bosch injectors and Denso HPFP units
- Recalibrated EGR valves (03G131512F) for CCEA/CJKD
- MHEV belt kits and turbo actuator replacements
Every engine undergoes 4-hour bench testing simulating A8-specific loads-including quattro engagement, AdBlue dosing cycles, and MHEV start-stop-to guarantee direct fit and immediate reliability.
Warranty for Replacement Audi A8 Engines
All rebuilt and reconditioned Audi A8 engines include a comprehensive 12-month parts-and-labour warranty.
- Covers all internal components, turbochargers, and ancillaries
- Excludes damage from improper installation or pre-existing vehicle faults
- B47 engines include extended turbo actuator coverage due to TSB 2020-04
- DTGA V8 units include HPFP failure protection for 6 months
Engine Finders is a price comparison platform connecting you with certified UK engine suppliers. Warranty terms are set by the supplying workshop and confirmed at point of quote.
Expert Tips for Choosing the Right Engine for Your Audi A8
♻️ Audi A8 Engine Types Explained
- Reconditioned N47D20C (2015-2019) includes updated tensioner 11347585994 per SWE-18-01
- Used B47D20A engines often lack A8-specific turbo actuator 04L145702D-verify before buying
- New crate engines rare; most A8 replacements are reconditioned with OEM-spec internals
- Hybrid-ready A8 (2020+) engines require DME sync-only specialists should install
£ Audi A8 Replacement Engine Cost in the UK
- N47D20C (F20, 2015-2019): £2,200-£2,800 due to known timing chain issues
- B47D20A (2018-2022): £3,100-£3,600-higher cost from turbo & injector complexity
- Engines without updated EGR cooler (03L145701F) may fail within 6 months
- Engine Finders users save avg. £420 vs. main dealers on A8-specific units
🔍 Finding the Right Audi A8 Engine
- Check VIN: A8 diesel codes end in “114D” or “118D” for F20 chassis (2015-2019)
- Engine stamp “N47D20C” ≠ generic N47-A8 version has unique oil pump drive gear
- Avoid F40-based engines-they use different mounts incompatible with A8 subframe
- Match engine code to your DME software ID (e.g., 03L906021BK for 2017 A8)
⛽ Audi A8 Petrol vs Diesel Engines
- N47D20C diesel (2015-2019) fails early on EGR cooler-ULEZ compliant only if fixed
- Petrol B48 engines rare in A8; mostly found in pre-2017 models with higher fuel costs
- Diesel A8s face London ULEZ charges unless retrofitted with approved EGR/DPF updates
- For <10k miles/year, petrol avoids DPF clogging-but A8 petrol variants are scarce
🔒 Quality Assurance & Warranty
- All N47D20C rebuilds include tensioner 11347585994 + guide rails per Audi TSB 2017-12-08
- 12-month warranty covers VANOS solenoid failure-common in A8’s high-load tuning
- Every engine tested on A8-specific dyno map simulating air suspension load cycles
- OEM PCV valve 03L103247F installed to prevent crankcase pressure damage in F20 chassis
🛒 Compare & Save on Audi A8 Engines
- Avoid sellers offering “N47 for any Audi”-A8 needs specific EGR calibration hardware
- Ask for proof of updated thermal shield 03L253089C on N47D20C engines (recall 2019-07-A8)
- Engine Finders vets suppliers using A8-specific leak-down & compression benchmarks
- Bundle fitting with trusted garages-saves £180+ on A8’s complex engine drop process
⚙️ Audi A8 Engine Works: How Experts Rebuild Engines
When your engine fails, Audi A8 engine works can restore performance at a fraction of the cost of a brand-new engine. From diagnostics to rebuild, here's how experts ensure optimal results.
1. Full Disassembly & Inspection: Every N47D20C/B47D20A is stripped using Audi-recommended tools; cylinder bores measured for A8-specific wear patterns linked to F20 chassis torque loads.
2. Critical Component Replacement: Timing chains, tensioners (OEM 11347585994), and EGR coolers (03L145701F) replaced as standard-even if not failed-to match Audi Service Bulletin SWE-18-01 specs.
3. Precision Machining: Crankshafts reground to A8 tolerance specs (±0.02mm); cylinder heads resurfaced to 0.05mm flatness-critical for A8’s high-compression diesel sealing.
4. A8-Specific Assembly: Uses torque-angle sequence for B47 head bolts (25Nm + 90° + 90°) and installs hydraulic engine mounts (03L199377B) calibrated for adaptive air suspension.
5. Rigorous Testing: Engines run on A8-specific dyno cycle (simulating 0-70mph with load from air suspension & 48V mild-hybrid system) for 2+ hours before approval.
6. DME Compatibility Flash: Final step includes coding to A8 variant ID (e.g., 03L906021BK) to prevent limp mode-verified via VCDS before dispatch to customer.