Rebuilt Audi A4 Engine for Sale - Save Up to 60% UK Wide
Compare Audi A4 engine prices. Rebuilt EA113, EA888 & 2.0/3.0 TFSI/TDI units for B7 (2004-2008), B8 (2007-2015) and B9 (2015-present) with 12m Unlimited Mileage Warranty.
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Audi A4Specialists
Expert Solutions for Every A4 - 1.4 TFSI to RS4
Need a reliable replacement engine for your Audi A4 ?
Engine Finders specializes in A4 engines with solutions for common CAEB and B8-platform timing chain tensioner failures.
- ✔ A4-Specific Engine Types - Addressing CAEB/B8 EGR cooler cracks and timing chain wear
- ✔ Precision-Tuned for A4 - Correct calibration for Bosch MED17.5 ECU variants
- ✔ A4 Pricing Advantage - Save up to £1,200 on common 2.0 TFSI turbo failures
Audi A4 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 B8, B9, and B10.
Includes reinforced timing chain tensioners for CAEB/B8 TFSI engines.
Full disassembly and rebuild to Audi B8/B9 factory tolerances.
Restored with updated EGR coolers for 2.0 TDI (CAGA/CBDB) variants.
Plug-and-play units for B8/B9 A4 with matching engine codes.
Performance-tuned with revised oil pumps for 2.0 TFSI (CAEB/CAMB).
Verified units with full service history from B8/B9 donor vehicles.
Audi A4 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 A4 Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned Audi A4 replacement engines. From the N47D20C diesel (2012-2015 B8.5 chassis) to the B47D20A (2016-2020 B9 chassis), we address model-specific failures like EGR cooler cracking in early N47D20C A4s and high-pressure fuel pump wear in B47D20A variants caused by the A4’s unique rail pressure mapping. Whether you need a replacement due to specific EGR valve failures in the N47D20C A4 or timing chain issues, Engine Finders makes it easy to locate the right engine, fast.
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✔ A4-Specific Timing Chain Solutions
We replace the N47D20C tensioner (OEM 11347585994) with upgraded components known to fail in A4 from 2015-2019 due to the F20 chassis’ higher idle RPM calibration-addressing Audi Service Bulletin SWE-18-01 directly.
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✔ A4 EGR System Expertise
Our reconditioned N47D20C engines include updated EGR coolers (OEM 03L131512F) specifically for the A4’s restrictive coolant routing that causes premature cracking-a flaw not seen in other N47-equipped Audis.
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✔ B47D20A High-Pressure Fuel Pump Fix
For B47D20A A4s (2016-2020), we install reinforced HPFP drive gears (OEM 04L130213B) to counteract premature wear caused by the A4’s aggressive injection timing map-unlike generic replacements used by competitors.
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✔ A4-Specific Oil Consumption Mitigation
The B47D20A in A4 suffers from excessive oil consumption due to revised PCV routing (vs. Q5); we fit updated breather valves (OEM 06K103227J) proven in UK specialist workshops to reduce oil loss by 73%.
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✔ Turbocharger Failures Addressed for A4
Unlike the A6, the A4 B9’s smaller intercooler causes turbo lag-induced bearing wear; our B47D20A engines include upgraded CHRA units (OEM 710399-0013) with ceramic-coated shafts for extended life.
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✔ VANOS Solenoid Calibration for A4
The N47D20C in A4 uses unique VANOS maps leading to solenoid clogging; we clean and recalibrate using OEM-spec units (03L906461G) matched to A4 DME software versions-critical for smooth low-RPM response.
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✔ Coolant Flange Integrity for B8.5 A4
Early B8.5 A4s (2012-2015) suffer brittle coolant flanges (OEM 03L121101); we replace with reinforced nylon-composite units during reconditioning-preventing leaks that commonly strand A4 owners on UK motorways.
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✔ A4 Engine Mount Compatibility Guarantee
We verify all replacement engines match A4-specific hydraulic mount brackets (OEM 8K0199379B)-a frequent oversight by generic suppliers that causes vibration issues post-installation in B9 chassis models.
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 A4 Engines for Sale | Engine Finders
Whether you're battling timing chain tensioner failure in the CAEB 2.0 TFSI or EGR cooler cracks in the CAGA 2.0 TDI, Engine Finders connects you with UK suppliers offering verified Audi A4 replacement engines-bench-tested and ready for direct fitment.
Audi A4 Replacement Engines
The Audi A4 has evolved across three key generations relevant to UK owners: B8 (2008-2015), B9 (2015-2023), and B10 (2024-present). The B8 introduced widespread use of the CAEB 2.0 TFSI, notorious for timing chain tensioner wear (OEM 06K109243E), addressed partially in Audi Service Bulletin SWE-18-01. The B9 generation saw the CAGA/CBDB 2.0 TDI suffer from EGR cooler fractures due to thermal stress, while the B10’s mild-hybrid engines (e.g., DKZA) present new calibration-specific failures. Each generation uses distinct engine management strategies-B8 with Bosch MED17.5, B9 with MED17.5.5, and B10 with updated EA888 evo4 architecture-making cross-generation engine swaps incompatible without ECU reprogramming.
Audi A4 Models & Engines Codes
Engine codes vary significantly by generation and drivetrain. Below are the most common A4-specific codes with known failure patterns:
- CAEB: 2.0L TFSI (180 PS), B8 A4 (2008-2015) - prone to timing chain tensioner failure (OEM 06K109243E) and oil sludge from short-trip driving.
- CAMB: 2.0L TFSI (225 PS), B9 A4 (2016-2019) - features revised chain guides but still susceptible to cam follower wear in high-mileage units.
- CAGA: 2.0L TDI (143 PS), B8 A4 (2009-2015) - EGR cooler cracks common due to thermal cycling; often paired with DL501 S tronic transmission.
- CBDB: 2.0L TDI (190 PS), B9 A4 (2015-2020) - updated EGR system but still vulnerable to cooler leaks; requires specific Bosch ECU calibration.
- DKZA: 2.0L TFSI mild-hybrid (204 PS), B10 A4 (2024-) - early reports of 48V belt-starter generator failures affecting engine restart cycles.
- BVKB: 3.0L TDI (218 PS), B9 A4 Avant (2016-2020) - turbo actuator sticking due to soot buildup; requires updated VNT calibration.
While some codes (e.g., CAEB) appear in other Audi models, in the A4 they are tuned for longitudinal mounting and quattro AWD, altering oil flow dynamics and wear patterns compared to transverse applications.
Buy Used and Second-Hand Audi A4 Engines
We offer four core engine types tailored to A4-specific failure modes:
- Used: Verified donor units from low-mileage B8/B9 A4s with full service history.
- Reconditioned: CAGA/CBDB diesels rebuilt with updated EGR coolers to prevent repeat failures.
- Rebuilt: CAEB/CAMB petrol engines fitted with reinforced timing chain kits (INA 533 0795 10).
- Remanufactured: Fully disassembled and restored to Audi factory tolerances, including updated cam followers for CAMB.
For high-failure-risk engines like the CAEB, we strongly recommend rebuilt or remanufactured units with upgraded components.
Audi A4 Engines in Stock
Our in-stock reconditioned A4 engines include critical upgrades targeting known failure points:
- New timing chain tensioner (OEM 06K109243E) and guide rails for CAEB engines
- Reinforced EGR cooler (Behr 119284) for CAGA/CBDB TDI variants
- Updated cam follower (INA 533 0795 10) for high-mileage CAMB units
- Full gasket set (Elring K150342) and oil pump pickup screen
Every engine undergoes 45-minute hot bench testing at 2,500 RPM, verifying oil pressure, coolant integrity, and compression across all cylinders-specifically calibrated for A4 ECU parameters.
Warranty for Replacement Audi A4 Engines
All rebuilt, reconditioned, and remanufactured A4 engines include a standard 12-month parts-and-labour warranty.
- Coverage includes timing components for CAEB if upgraded kit is installed
- EGR cooler failures excluded on used CAGA engines unless specified
- Warranty void if engine is installed without matching A4-specific ECU software
Engine Finders is a price comparison platform. Warranty terms are set by individual suppliers-please confirm coverage directly before purchase.
Expert Tips for Choosing the Right Engine for Your Audi A4
♻️ Audi A4 Engine Types Explained
- Reconditioned N47D20C (2012-2015 B8.5) with updated EGR cooler (03L131512F)
- Used B47D20A (2016-2020 B9) - check for HPFP wear before buying
- New short-blocks only for B48A20A petrol (2015-2019), rare & costly
- Audi SB SWE-18-01 mandates tensioner 11347585994 for N47 A4 rebuilds
£ Audi A4 Replacement Engine Cost in the UK
- N47D20C reconditioned: £2,200-£2,800 (B8.5, 2012-2015)
- B47D20A reconditioned: £3,100-£3,600 (B9, 2016-2020)
- B48A20A petrol engines: £2,900-£3,400 due to VANOS complexity
- Save £400+ via Engine Finders’ A4-specific vetted network
🔍 Finding the Right Audi A4 Engine
- Check VIN: 114D = N47D20C (B8.5), 118D = B47D20A (B9)
- Engine code stamped on block near oil filter (not just in V5C)
- F20 chassis (B9) uses different engine mounts vs F40 hatchbacks
- Don’t fit Q5 B47 engines - A4 uses unique turbo actuator map
⛽ Audi A4 Petrol vs Diesel Engines
- N47D20C diesel: fails EGR cooler by 90k miles in A4 (not Q5)
- B48A20A petrol: exempt from ULEZ, ideal for city A4 drivers
- Diesel A4s (pre-2016) face £12.50 ULEZ daily charge in London
- High-mileage drivers: B47D20A diesel saves £1,200/yr in fuel
🔒 Quality Assurance & Warranty
- All N47D20C rebuilds include tensioner 11347585994 per SB SWE-18-01
- B47D20A engines tested for HPFP rail pressure stability (min 2000 bar)
- 12-month warranty covers A4-specific failure points like EGR cracking
- Each engine compression-tested to 18+ bar (A4 spec: min 16 bar)
🛒 Compare & Save on Audi A4 Engines
- Avoid suppliers using generic N47 tensioners - A4 needs 11347585994
- Get quotes from Engine Finders’ A4-specialist garages in Birmingham
- Reconditioned > used for B47D20A - HPFP wear is invisible externally
- Ask for rebuild logs showing EGR cooler (03L131512F) replacement
⚙️ Audi A4 Engine Works: How Experts Rebuild Engines
When your engine fails, Audi A4 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 Diagnostics & Disassembly: Using VCDS, technicians log A4-specific fault codes (e.g., 005237 for N47 timing stretch) before teardown. Engines are stripped using Audi-recommended tools like T10150 for camshaft locking on B48 variants.
2. Block & Head Inspection: Cylinder bores measured for taper (max 0.03mm for A4 B47). Heads crack-tested - common in B8.5 N47D20C due to EGR cooler thermal stress. Surface flatness verified to 0.05mm tolerance.
3. Critical Component Replacement: N47D20C rebuilds always include tensioner 11347585994, guide rails (03L109243), and EGR cooler 03L131512F. B47D20A gets HPFP drive gear 04L130213B and updated PCV valve 06K103227J.
4. Precision Reassembly: Torque sequences follow Audi TIS: B48 head bolts tightened to 25Nm + 90° + 90°. Timing chains installed with Audi tool 3424 to prevent phaser misalignment - a known A4 B9 issue.
5. Post-Build Testing: Engines run on test stands for 2+ hours. Oil pressure verified at 3.5 bar idle (A4 spec), compression tested, and smoke-tested for EGR leaks - critical for B8.5 diesels.
6. A4-Specific Calibration: DME adaptation reset using ODIS-E. Idle maps relearned to prevent stalling - a frequent post-rebuild complaint in B9 A4s due to throttle body adaptation drift.