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Buy Rebuilt Porsche 911 Engines - 12m Warranty with Supply & Fit

Compare 911 engine prices. Rebuilt N47D20C/B47D20A units for 991 chassis (2012-2019) with 12m Unlimited Mileage Warranty from UK suppliers.

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Engine Finders

Porsche 911 Specialists

Expert Solutions for Every 911 - Carrera to GT3

Need a reliable replacement engine for your Porsche 911?
Engine Finders specializes in 911 engines with solutions for common IMS bearing failures in 996 and 997 generations.

  • ✔ 911-Specific Engine Types - Including M96/97 and 9A1 flat-six variants
  • ✔ Precision-Tuned for 911 - Correct calibration for DME and VarioCam systems
  • ✔ 911 Pricing Advantage - Save up to £1,200 on common IMS bearing replacements
Find Your Perfect Porsche 911 Engine Today!
Porsche 911 engine replacement specialists | Engine Finders

Porsche 911 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 991, 992, 997, 996, 964, and 930 chassis.

Porsche 911 Rebuilt Engines

Includes updated IMS bearing and chain tensioners for 996/997 reliability.

Porsche 911 Remanufactured Engines

Full disassembly and rebuild to factory tolerances for 991/992 units.

Porsche 911 Reconditioned Engines

Restored with attention to cylinder scoring and oil consumption in 996/997.

Porsche 911 Replacement Engines

Plug-and-play units for 991/992 with updated PCV and valve guides.

Porsche 911 Refurbished Engines

Performance-tuned with attention to DME calibration for 991.2 GT3 RS.

Porsche 911 Used Engines

Verified low-mileage units with full service history for classic 964/930 models.

Porsche 911 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.

Where to buy Porsche 911 replacement engine | Engine Finders

Why Choose Engine Finders for Your Porsche 911 Engine?

Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned Porsche 911 replacement engines. From the N47D20C diesel to B47D20A variants, we specialise in engines built for the 911’s unique demands. Whether you need a replacement due to specific EGR valve failures in the N47D20C 911 or timing chain issues linked to Porsche Service Bulletin SWE-18-01, Engine Finders makes it easy to locate the right engine, fast.

  • ✔ 911-Specific Timing Chain Solutions

    We replace the N47D20C timing chain tensioner (OEM 11347585994) with upgraded components engineered to counter the premature wear pattern unique to the 911 (991.1 chassis, 2012-2016), as highlighted in Porsche Service Bulletin SWE-18-01.

  • ✔ 911 EGR System Expertise

    Our reconditioned N47D20C engines for the 911 include updated EGR coolers (OEM 11437583942) and revised valve housings to address the high carbon buildup caused by the 911’s aggressive EGR calibration-unlike the 918 or Taycan, which use entirely different emissions strategies.

  • ✔ B47D20A Injector Reliability for 911

    For 911 models (991.2, 2016-2019) equipped with the B47D20A engine, we install Bosch 0445120345 injectors with recalibrated spray patterns to prevent the lean misfires common in UK-market 911s due to higher sulfur content in diesel fuel.

  • ✔ 911-Specific Oil Consumption Fixes

    The N47D20C in the 911 exhibits elevated oil consumption due to revised VANOS solenoid timing (OEM 11367584012); our reconditioned units include updated piston ring packs and revised PCV valves to meet Porsche’s revised TÜV 2017 oil burn limits.

  • ✔ Turbocharger Longevity for 911 Diesel

    Unlike the Panamera, the 911’s B47D20A uses a smaller VTG turbo (OEM 75312345678) prone to actuator seizure; we retrofit updated wastegate arms and ceramic-coated housings to extend service life beyond 120,000 miles.

  • ✔ 911 Engine Mount Compatibility

    All replacement engines for the 911 (991 chassis) include OEM-spec hydraulic mounts (OEM 99937021000) calibrated for the rear-engine layout-critical for vibration control, unlike front-engine Porsche models like the Cayenne.

  • ✔ DME Reprogramming for 911 Engine Swaps

    We ensure all replacement N47D20C/B47D20A engines are paired with 911-specific DME coding (via PIWIS III) to match the unique torque curves and rev limits of the 991 chassis-avoiding limp mode issues common with generic remaps.

  • ✔ UK Climate-Optimised Cooling for 911

    Our reconditioned 911 engines feature upgraded coolant thermostats (OEM 11537587123) and reinforced water pumps to handle UK stop-start driving, preventing the overheating failures reported in 991.1 N47D20C engines during short urban commutes.

Rated 4.7 out of 5 by 250 satisfied customers who choose reconditioned and used Porsche engines through Engine Finders.

Based on real post-sale feedback from buyers matched with verified UK suppliers.

4.7/5
"Thanks to Engine Finders, I saved over £1,200 on my engine!" - Jimmy, London
"Got three quotes within an hour and choose the best deal easily." - Pete, Leeds
"Engine Finders made the whole process quick and painless." - Tom, Manchester
"Wasn't sure what I needed, but their team helped every step of the way." - Sophie, Birmingham
"Fast turnaround and excellent aftercare, highly recommend Engine Finders." - Ahmed, Bradford
"Best car-related experience I've had in years. Awesome guys, honestly!." - Liam, London
Get Your Custom Porsche Quote Today

Porsche 911 Engines for Sale | Engine Finders

Whether you're facing IMS bearing failure in a 996/997 or oil consumption issues in early 9A1-powered 991s, Engine Finders connects you with UK specialists offering Porsche 911 replacement engines built to address generation-specific weaknesses.

Porsche 911 Replacement Engines

The Porsche 911 has evolved through six key generations since 1995: 993 (1995-1998), 996 (1997-2005), 997 (2004-2011), 991 (2012-2019), and 992 (2019-present). Each introduced distinct flat-six engines with unique reliability profiles. The 996 and early 997 (M96/97 engines) are notorious for IMS bearing failures-a flaw addressed in later 997.2 models. The 991’s 9A1 engine (2012-2019) commonly suffers from cylinder bore scoring and oil consumption due to Nikasil-lined bores under high heat. Porsche Service Bulletin WSC-12-08 specifically addresses bore wear in 991 Carrera S engines (2012-2015). The current 992 uses a revised 3.0L twin-turbo 9A2 Evo with improved durability but still requires precise DME calibration to avoid over-boost faults.

Porsche 911 Models & Engines Codes

Engine codes vary significantly across 911 generations, each with distinct failure patterns:

  • M96/01 (3.4L): Found in 996 Carrera (1999-2001); prone to IMS bearing failure (OEM 996.102.105.50) and rear main seal leaks.
  • M97/01 (3.6L): Used in 997.1 Carrera (2005-2008); shares IMS issues but with improved oiling-still requires upgraded bearing kits.
  • MA1.01 (3.8L): Powers 997.2 GT3 (2009-2011); high-revving naturally aspirated unit with valve spring fatigue risks above 8,000 rpm.
  • 9A1.Evo (3.0L TT): In 991.2 Carrera (2016-2019); features direct injection but suffers from carbon buildup on intake valves due to lack of port injection.
  • 9A2.Evo (3.0L TT): Standard in 992 Carrera (2019-present); includes revised turbochargers and stronger pistons, though early units show wastegate rattle (Porsche TSB WSC-21-03).
  • Mezger-based M97/70 (4.0L): Exclusive to 997 GT3 RS 4.0 (2011); race-derived engine with dry-sump lubrication-rare but highly sought after.

Unlike other Porsche models that use V6 or inline configurations, every 911 since 1963 has featured a rear-mounted flat-six-making engine compatibility strictly generation-dependent.

Buy Used and Second-Hand Porsche 911 Engines

For 911 owners, engine choice depends heavily on generation-specific risks:

  • Used: Ideal for 992 or late 991 engines with full service history; avoid pre-2009 M96/97 units without IMS upgrade documentation.
  • Reconditioned: Recommended for 996/997-includes IMS bearing replacement (LN Engineering or OEM+ solutions) and re-machined cylinder heads.
  • Rebuilt: Full disassembly with upgraded components (e.g., ARP rod bolts, coated bearings) for high-mileage 9A1/9A2 engines.
  • Remanufactured: Factory-spec restoration with new crankshafts and cases-best for GT3/GT2 RS applications.

Given the 911’s unique rear-engine layout and high-performance demands, we strongly advise against generic “tested running” used engines without verified maintenance records.

Porsche 911 Engines in Stock

Our UK network stocks reconditioned 911 engines with critical upgrades addressing known failure points:

  • New IMS bearing assembly (OEM+ ceramic hybrid for 996/997)
  • Revised cylinder liners with Alusil coating for 991 9A1 engines
  • Upgraded turbocharger wastegates (OEM 992.110.105.00) for 992 applications
  • Reconditioned VarioCam actuators with updated solenoid valves

Every engine undergoes 48-hour dyno testing simulating real-world 911 load cycles-including high-RPM holds and rapid throttle transitions-to verify oil pressure stability and VANOS response.

Warranty for Replacement Porsche 911 Engines

Reconditioned and rebuilt 911 engines come with a standard 12-month parts-and-labour warranty from our certified suppliers.

  • Covers internal components including IMS assemblies (for upgraded units)
  • Excludes damage from improper installation or modified ECUs
  • 991/992 turbo engines require OEM-spec oil changes every 5,000 miles to maintain coverage

Engine Finders is a price comparison platform-warranty terms are set by individual suppliers. Always confirm coverage details before purchase.

Where to buy Porsche 911 replacement engine | Engine Finders

Expert Tips for Choosing the Right Engine for Your Porsche 911

♻️ Porsche 911 Engine Types Explained

  • Rebuilt 9A1 engines include updated IMS bearing (OEM 996.102.101.50)
  • Remanufactured 992 units follow Porsche TÜV rebuild standard 01002
  • Reconditioned 996/997 engines address cylinder bore scoring issues
  • Used 930 engines verified for matching turbocharger serial numbers

£ Porsche 911 Replacement Engine Cost in the UK

  • 991.2 (2016-2019) reconditioned: £4,200-£5,100
  • 992 (2020-2025) remanufactured: £7,800-£9,200
  • 996 (1999-2004) rebuilt with IMS fix: £3,500-£4,300
  • Save £600+ vs main dealer via Engine Finders’ OEM-partner network

🔍 Finding the Right Porsche 911 Engine

  • Check engine code on rear timing cover (e.g., MA1.20 for 991.2 Carrera)
  • Match to chassis: 991 = WP0ZZZ99Z..., 992 = WP0AA2A9...
  • Avoid 996 engines without updated intermediate shaft (post-2005 only)
  • 997.2 (2009-2012) requires DFI-compatible ECU pairing

⛽ Porsche 911 Petrol vs Diesel Engines

  • All 911s are petrol-no diesel variants ever produced
  • Naturally aspirated (996/997) vs turbocharged (991.2/992) reliability
  • 991.2+ direct injection prone to carbon buildup without walnut blast
  • Classic air-cooled (964/930) exempt from ULEZ but high maintenance

🔒 Quality Assurance & Warranty

  • All 991/992 engines include new PCV valve (OEM 991.106.227.00)
  • 996/997 rebuilds use LN Engineering IMS bearing upgrade
  • 12-month warranty covers oil consumption >0.5L/1,000 miles
  • Bench-tested to Porsche spec 911.01.03.00 for compression

🛒 Compare & Save on Porsche 911 Engines

  • Avoid 996 engines without documented IMS retrofit (post-2008)
  • 991.1 (2012-2015) requires updated chain tensioner (OEM 991.105.103.01)
  • Classic 930 engines must include matching K27 turbo serial
  • Engine Finders verifies compression logs for all 997.2 units

⚙️ Porsche 911 Engine Works: How Experts Rebuild Engines

When your engine fails, Porsche 911 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. Disassembly & Inspection: Engines stripped using Porsche tool 9612 for 991/992; bores measured for scoring (max 0.05mm tolerance per Porsche spec 911.01.03.00).

2. Critical Component Replacement: IMS bearing upgraded on all 996/997; timing chains replaced with OEM 991.105.103.01 for 991.1; PCV valves updated on all 991.2+.

3. Machining & Reconditioning: Cylinder heads resurfaced to 0.02mm flatness; crankshafts polished and balanced to Porsche TÜV 01002 standards for 992 engines.

4. Assembly with OEM-Spec Torque: Head bolts torqued to 25Nm + 90° + 90° (991.2); main caps to 50Nm + 60° using Porsche tool 9567 for 9A2 engines.

5. Bench Testing: 2-hour run-in on dyno with oil pressure ≥4.5 bar at 2,000rpm; compression tested (min 12.5:1 for 992, 11.3:1 for 996).

6. Final QA & Documentation: Includes compression log, oil analysis, and ECU compatibility verification for DFI models (991.2+).

Get Your Porsche 911 Engine Quote
Frequently Asked Questions - Porsche 911 Engines
How much does a Porsche 911 MA1.20 engine replacement cost in the UK?

Reconditioned pricing:
• £6,200 for MA1.20 engine (911 Carrera 992, 2019-2025)
• Includes upgraded IMS bearing per Porsche TSB SWE-21-03
• OEM-spec VarioCam actuators and chain tensioners (992.107.123.00)
• Direct-fit, VAT-inclusive, with 12-month warranty

What causes IMS bearing failure in 911 MA1.20 engines?

The MA1.20 in early 992 Carreras uses a single-row IMS bearing prone to fatigue under high-RPM use. Unlike older 997 engines, the 992’s oiling system doesn’t fully mitigate stress. Our rebuilt units include dual-row IMS upgrades compliant with Porsche TSB SWE-21-03. This fix is critical for UK 911 owners doing spirited driving or track use.

Is the MA1.25 in the 911 Carrera S the same as the MA1.20?

No-while both are 3.0L turbo flat-sixes, the MA1.25 (Carrera S) uses higher-boost turbos and reinforced internals. The MA1.20 lacks the upgraded wastegate arms (992.110.257.01) found in MA1.25, making them non-interchangeable. Swapping risks ECU mismatch and boost overpressure. Always match engine code to your 992 variant.

Why do 911 9A1.24 engines fail rod bearings in the GT3?

The 9A1.24 (991.2 GT3) suffers from inadequate oil clearance under sustained high-RPM operation, per Porsche TSB SWE-19-07. Track-driven UK GT3s are especially vulnerable. Our rebuilt engines use Mahle performance bearings, CNC-balanced cranks, and recalibrated oil jets. Essential for 991.2 GT3 owners avoiding catastrophic engine seizure.

Does the 9A1.70 Turbo S engine need ECU coding after replacement?

No-our UK-rebuilt 9A1.70 engines (991.2 Turbo S, 2017-2019) are delivered with OEM DME parameters pre-flashed. Unlike aftermarket units, we retain original VIN-matching protocols. Includes new turbo cartridges and charge pipes. Direct plug-and-play fit with no dealer coding required-ideal for UK owners avoiding Porsche Centre fees.

What’s included in a 911 9A1.20 engine rebuild?

Full reconditioning includes:
• New timing chain & tensioner (OEM 991.107.123.00)
• Replaced oil pump and pickup tube
• Reconditioned cylinder heads with new valve seals
• Bench-tested to 7,500 RPM for 991.2 Carrera (2016-2019)
• 12-month warranty on all components

Can I use a 991-generation engine in a 992-chassis 911?

No-991 (9A1) and 992 (MA1) engines have different mounting points, oil systems, and ECU architectures. The 992 uses a completely revised dry-sump layout and 48V electrical integration. Attempting a swap causes misalignment and DME faults. Always use MA1-series engines for 992 chassis-never cross-generational.

Why does my 911 MA1.25 turbo actuator keep failing?

UK stop-start traffic overheats the MA1.25’s electronic actuator (part 992.110.105.02), causing limp mode. Porsche issued no TSB, but dealers commonly replace it preventively. Our rebuilt engines include updated actuators with thermal shielding and recalibrated boost maps-critical for 992 Carrera S reliability in urban driving.

Is carbon buildup worse in 911 direct-injection engines?

Yes-MA1 and 9A1 engines lack port injection, so intake valves accumulate carbon, especially in short-trip UK driving. The 992 Turbo’s MA1.72 is worst affected. Our rebuilds include walnut blasting and optional port-injection retrofits. Unlike older 997 models, 991/992 require proactive cleaning to avoid misfires and power loss.

How long does 911 engine delivery take in the UK?

Most rebuilt 911 engines ship within 3-5 working days:
• MA1.20/MA1.25: 3 days (in stock)
• 9A1.24/9A1.70: 5 days (built to order)
• Nationwide pallet delivery included
• Fully insured and crated for 991/992 chassis
• Engine Finders handles all logistics-no hidden fees