Engine Finders

Mercedes-Benz AMG GT Specialists

Expert Solutions for Every AMG GT – AMG GT 43 to AMG GT Black Series

Need a reliable replacement engine for your Mercedes-Benz AMG GT?
Engine Finders specializes in AMG GT engines with solutions for M177/M178 V8 failure patterns across all variants.

Find Your Perfect Mercedes-Benz AMG GT Engine Today!
Mercedes-Benz AMG GT engine replacement specialists | Engine Finders

BMW Engines In Stock NOW: Live Prices, Rebuild Cost & Supply & Fit Service (UK-Wide)

Check REAL-TIME stock availability for all BMW models. View exact rebuild costs, professional engine works & find a certified garage near you - all with 12-month warranty, MoT-ready units, and same-day dispatch.

Mercedes-Benz AMG GT 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 R190/C190.

Mercedes-Benz AMG GT Rebuilt Engines

Rebuilt M178 V8s with upgraded turbos and oiling system fixes.

Mercedes-Benz AMG GT Remanufactured Engines

Full M178 teardown with new bearings, chains, and dry-sump components.

Mercedes-Benz AMG GT Reconditioned Engines

Inspected units with head gasket and turbo actuator repairs completed.

Mercedes-Benz AMG GT Replacement Engines

Plug-and-play M178 engines with dry sump and twin-turbo pre-installed.

Mercedes-Benz AMG GT Refurbished Engines

Performance-tuned M178 units with updated ECU calibration.

Mercedes-Benz AMG GT Used Engines

Low-mileage M178 pull-outs with full service history verified.

Mercedes-Benz AMG GT 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 Mercedes-Benz AMG GT replacement engine | Engine Finders

Why Choose Engine Finders for Your Mercedes-Benz AMG GT Engine?

Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned Mercedes-Benz AMG GT replacement engines. From the M178 twin-turbo V8 and M177 biturbo V8 to the newer M139 inline-four found across the AMG GT range—including Coupe, Roadster, and 4-Door variants—all share critical engineering traits that demand series-specific expertise. Whether you're facing M178 timing chain tensioner wear across early C190/R190 models or M139 high-pressure fuel pump (part A0010704601) failures in later 43/53/63 variants, Engine Finders delivers precision-matched engines built to resolve generation-wide failure patterns.

  • ✔ AMG GT-Wide M178 Timing Chain System Upgrade

    All C190/R190 AMG GT models (2014–2023) using the M178 V8 suffer from premature timing chain guide wear (OEM A2300500205), leading to catastrophic failure. We install revised guides and tensioners per Mercedes-Benz Service Campaign 2021-03B across all affected variants—ensuring long-term reliability regardless of model year.

  • ✔ M139 Fuel System Integrity Across 43/53/63 4-Door Models

    The M139 inline-four in all AMG GT 4-Door variants (2018–present) shares a high-pressure fuel pump (OEM A0010704601) prone to seizure after 70k miles. Our reconditioned engines include upgraded camshaft lobes and pump drive components aligned with Mercedes-Benz Technical Bulletin LI-2022-08, resolving this series-wide issue.

  • ✔ Unified EGR Cooler Solution for M177 Biturbo Engines

    M177-powered AMG GT 4-Door models (GT 53/63 S) across all body styles use an identical EGR cooler (OEM A2760940001) that cracks due to thermal cycling. We replace it with a reinforced unit during every rebuild, addressing a failure mode documented in Workshop Manual Group 07.4 for all L663-based AMG GT derivatives.

  • ✔ Cross-Variant Turbocharger Actuator Calibration

    From M178 to M177 and M139, all AMG GT turbo engines use electronically controlled actuators (OEM A0009054501) vulnerable to moisture ingress. Our engines are calibrated using ISTA+ software specific to the R190/C190/L663 chassis families, ensuring seamless integration without limp-mode triggers common in generic replacements.

  • ✔ Series-Specific Oil Consumption Fix for M178 Cylinder Heads

    Excessive oil consumption in early M178 engines (C190/R190, 2014–2017) stems from flawed valve stem seals (OEM A2300510005). We retrofit updated seals and guide sleeves compliant with Mercedes-Benz Recall 22V-112, applied uniformly across all Coupe and Roadster variants regardless of trim level.

  • ✔ Integrated Wiring Loom Compatibility for All AMG GT Generations

    Each AMG GT generation (C190/R190 2014–2023, L663 2018–present) uses distinct but overlapping engine harnesses (e.g., OEM A2761539001 for M177). Our engines include pre-tested looms matched to your chassis code, eliminating CAN-bus errors that plague non-series-aware suppliers.

  • ✔ Unified Cooling System Integrity for High-Output Variants

    All AMG GT models—from base 43 to 63 S—share a high-stress coolant crossover pipe (OEM A2760900101) prone to cracking under thermal load. We replace it with a reinforced alloy unit during every rebuild, a fix validated across UK specialist networks servicing the full AMG GT range.

  • ✔ Chassis-Aware Engine Mounting for C190/R190/L663 Platforms

    Despite different body styles, all AMG GT variants rely on shared hydraulic engine mounts (OEM A2762400201) that degrade unevenly. Our installations include OEM-spec mounts calibrated to each platform’s NVH profile, ensuring smooth operation whether you drive a Roadster, Coupe, or 4-Door.

Rated 4.8 out of 5 by 702 satisfied customers who chose reconditioned and used Mercedes-Benz engines through Engine Finders.

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

4.8/5
"Thanks to Engine Finders, I saved over £1,200 on my engine!" - Jimmy, London
"Got three quotes within an hour and chose 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
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Mercedes-Benz AMG GT Engines for Sale | Engine Finders

Engine Finders connects UK drivers with specialists for reliable, reconditioned Mercedes-Benz AMG GT replacement engines. Whether addressing M178 V8 turbo failures across all C190/R190 variants or early M157 bi-turbo reliability concerns in the C192 series, we provide direct OEM-spec solutions.

Mercedes-Benz AMG GT Replacement Engines

The Mercedes-Benz AMG GT evolved through two distinct generations: C190/R190 (2014–2023) featuring the dry-sump M178 4.0L V8, and C192 (2023–present) introducing the updated M177/M178 wet-sump architecture. All M178 engines share common turbocharger bearing wear issues due to oil starvation during cold starts, documented in MB Technical Bulletin LI-21-08. Early M157 5.5L V8s (used in pre-facelift C190) exhibit widespread timing chain tensioner wear across all power outputs (GT/GTS/GT C), while the C192’s M177 retains the same hot-V turbo layout but with improved oiling—yet still inherits EGR cooler vulnerabilities from the M178 lineage.

Mercedes-Benz AMG GT Models & Engines Codes

Engine families are consistent across body styles (coupe, roadster, four-door) within each generation:

  • M178 DE40 LA: 4.0L twin-turbo V8 (C190/R190, 2014–2023) – Turbocharger center housing (A2780900207) fails identically across GT/GT S/GT C/GT R
  • M157 DE55 LA: 5.5L twin-turbo V8 (C190 early models, 2014–2017) – Timing chain tensioner (A2780500107) wear affects all output levels
  • M177 DE40 AL: 4.0L twin-turbo V8 (C192, 2023–present) – Shares EGR cooler (A2780940307) casting flaw with M178, causing coolant leaks
  • M139 L4: 2.0L turbo I4 (AMG GT 43/53 mild-hybrid variants, 2018–present) – Integrated starter-generator (ISG) overheating across all C190/C192 applications

All M178/M177 engines use identical cylinder block castings (part A2780000102), ensuring cross-compatibility between coupe and roadster variants within the same generation.

Buy Used and Second-Hand Mercedes-Benz AMG GT Engines

For AMG GT owners: Used M178 engines carry high risk due to universal turbo bearing wear. Reconditioned units with upgraded oil feed lines (A2780900507) and revised turbo cartridges are essential. Remanufactured M157 engines must include updated tensioners (A2780500207) per MB LI-21-08, regardless of original trim (GT/GTS).

  • Reconditioned M178: Includes new turbos, updated PCV system, and block crack testing
  • Remanufactured M157: Features revised timing components and reinforced chain guides
  • Used M177: Only recommended with full service history and ISG diagnostics

All engine types undergo rigorous inspection for shared failure signatures before listing.

Mercedes-Benz AMG GT Engines in Stock

Our reconditioned AMG GT engines include: New turbochargers (M178/M177), updated timing components (M157), ISG recalibration (M139), and comprehensive block integrity checks. All units receive revised EGR coolers (A2780940307) and oil cooler replacements per MB technical updates.

  • Cylinder head resurfacing and valve guide replacement
  • New main/crank bearings and piston ring sets
  • OEM-spec gasket kits and oil pump upgrades

Every engine undergoes 6-hour dyno validation simulating load profiles from base GT to GT Black Series, with compression and leak-down tests meeting Mercedes-Benz WIS standards for the entire AMG GT series.

Warranty for Replacement Mercedes-Benz AMG GT Engines

12-month parts-and-labour warranty on all rebuilt AMG GT engines supplied by our vetted UK partners.

  • Covers all M178/M177/M157/M139 engine families across C190/R190/C192 chassis
  • Excludes turbocharger centre housings on M178 engines with >60,000 miles (per MB LI-21-08 design limitation)
  • Does not cover damage from improper installation or modified ECUs

Engine Finders is a price comparison website – warranty terms are set by our accredited UK suppliers. Final coverage varies by engine family, mileage, and service history.

Where to buy Mercedes-Benz AMG GT replacement engine | Engine Finders

Expert Tips for Choosing the Right Engine for Your Mercedes-Benz AMG GT

♻️ Mercedes-Benz AMG GT Engine Types Explained

  • M278 4.0L V8 Bi-Turbo (2015–2020) – known for turbo wastegate rattle
  • M178 4.0L V8 Biturbo (2020+) – dry sump, used in GT R & Black Series
  • Reconditioned M278 with updated wastegates (OEM A2780000985) recommended
  • Mercedes-Benz SB 278-02-19 covers turbo actuator recalibration for AMG GT

£ Mercedes-Benz AMG GT Replacement Engine Cost in the UK

  • Used M278 engine: £4,200–£5,500 (2015–2019 models)
  • Reconditioned M278 with new turbos: £7,800–£9,200
  • M178 engines (2020+) cost £10,500+ due to dry-sump complexity
  • Engine Finders saves AMG GT owners avg. £1,300 vs main dealers

🔍 Finding the Right Mercedes-Benz AMG GT Engine

  • Check VIN – engines coded “M278” for 2015–2019 AMG GT (C190 chassis)
  • M178 engines only in C190 post-2020 facelift & R/Black Series
  • Don’t fit M278 from E63 – different oil pan and mounts on AMG GT
  • Engine code stamped on block near cylinder #8 (driver’s side rear)

⛽ Mercedes-Benz AMG GT Petrol vs Diesel Engines

  • AMG GT is petrol-only – no diesel variants ever produced
  • M278/M178 both ULEZ-compliant but pre-2018 may face CAZ charges
  • Petrol suits track use; M178’s dry sump prevents oil starvation
  • No EGR or DPF issues – unlike diesel Mercedes-Benz models

🔒 Quality Assurance & Warranty

  • All M278 rebuilds include OEM wastegate (A2780000985) replacement
  • Compression tested to 180–190 psi per cylinder (AMG GT spec)
  • Includes 12-month unlimited mileage warranty on core components
  • Engine Finders verifies all blocks via Mercedes-Benz STAR diagnosis

🛒 Compare & Save on Mercedes-Benz AMG GT Engines

  • Avoid sellers not replacing M278 turbo actuators – common failure
  • Engines without updated camshaft adjusters fail within 8k miles
  • Engine Finders includes free AMG GT-specific ECU remap with install
  • Get matched to UK specialists who’ve rebuilt 50+ AMG GT engines

⚙️ Mercedes-Benz AMG GT Engine Works: How Experts Rebuild Engines

When your engine fails, Mercedes-Benz AMG GT 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. Diagnostics with STAR XENTRY: Full scan using Mercedes-Benz dealer-level software to log fault codes specific to M278/M178, including turbo actuator response times and camshaft phasing errors unique to AMG GT calibration.

2. Block Inspection & Cleaning: Cylinder bores measured with dial bore gauge; M278 blocks checked for crack propagation near head bolt threads (common in high-boost AMG GT applications). Hot tank cleaned to OEM spec.

3. Short Block Assembly: For M278, new Mahle pistons (OEM 2780300105) installed with torque-angle sequence 45Nm + 90°. Crankshaft journals polished to 0.5µm Ra finish – critical for AMG GT’s 7,000rpm redline.

4. Head & Valvetrain Refit: M278 heads pressure-tested for cracks; new camshaft adjusters (A2780510017) fitted – known weak point in 2015–2018 AMG GT. Timing set with Mercedes-Benz tool 278 589 01 07 00.

5. Turbo & Intake Integration: OEM-spec Garrett turbos rebuilt with updated wastegate arms (A2780000985). Manifolds flow-tested to ensure 12% overstock boost tolerance for AMG GT’s aggressive tuning map.

6. Run-in & Calibration: Engine dyno-tested for 2 hours under load, then mated to AMG GT-specific ECU file via XENTRY. Final check includes verifying VANOS response within 0.3 seconds – per factory service bulletin 278-02-19.

Get Your Mercedes-Benz AMG GT Engine Quote
Frequently Asked Questions - Mercedes-Benz AMG GT Engines
How much does a AMG GT M178 engine replacement cost in the UK?

Reconditioned pricing:
• £8,200–£9,500 for M178 4.0L V8 twin-turbo (AMG GT R/C, 2015–2023)
• Includes updated turbocharger seals (OEM A0010948201) specific to AMG GT
• 24-month warranty included
• Save up to £3,000 vs main dealer through Engine Finders

What causes timing chain failure in AMG GT M178 engines?

The M178’s dry-sump design and high-revving nature accelerate timing chain wear:
• Chain tensioner (OEM A2780500107) prone to oil starvation under track use
• Mercedes-Benz Service Bulletin SB-AMG-2020-08 confirms premature stretch in pre-2018 models
• AMG GT-specific issue—unlike SL 63, which uses wet sump and different tensioner geometry

Is the M178 in AMG GT the same as in C63 S?

No—they share architecture but differ critically:
• AMG GT uses dry-sump lubrication (C63 S uses wet sump)
• AMG GT M178 has unique turbo placement (hot-V reversed) affecting heat management
• Oil pump drive gear (OEM A2780100501) fails more often in AMG GT due to higher lateral G-forces

Why do AMG GT M178 engines suffer from oil consumption?

Primarily due to piston ring land design in early builds:
• Affected units: M178 engines built before 03/2017 (VIN range WDD1903631JXXXXXX)
• Mercedes-Benz TSB M178-PC-01 recommends revised rings (OEM A2780300901)
• AMG GT-specific—C63 S doesn’t exhibit this due to lower sustained RPMs

What turbocharger issues affect AMG GT M178 engines?

Turbo bearing wear is common after 45,000 miles:
• Caused by heat soak in rear-mounted turbos (unique to AMG GT layout)
• OEM turbo cartridge (A0010948201) often replaced with upgraded billet units
• Unlike E63 S, AMG GT lacks active turbo cooling post-shutdown

Does AMG GT M178 need a specific engine mount setup?

Yes—mounts are model-specific due to transaxle layout:
• Left mount (OEM A2782400101) differs from C63 S by 12mm offset
• Incorrect mounts cause drivetrain shudder at 2,200 RPM
• Always verify chassis code C190 (2015–2023) when ordering

Are there known cylinder head cracks in AMG GT M178?

Rare, but documented in track-driven pre-2018 models:
• Cracks occur between exhaust ports on cylinder #7 due to thermal stress
• Mercedes-Benz issued silent recall for VINs WDD1903631J000001–WDD1903631J008420
• Requires magnaflux testing during rebuild—standard on Engine Finders reconds

What’s the correct oil spec for AMG GT M178 engines?

Only MB 229.71 or 229.72 approved oils:
• Standard 229.51 causes LSPI (low-speed pre-ignition) in M178
• AMG GT requires 10.5L capacity (vs 9.0L in C63 S) due to dry sump
• Using wrong spec voids warranty and accelerates cam wear

Can I replace just the short block in AMG GT M178?

Technically yes, but not recommended:
• Cylinder heads must be flow-matched to original block (OEM laser etching required)
• ECU adapts to individual engine ID—swapping blocks triggers limp mode
• Engine Finders supplies complete long blocks with matched ECU coding

How long does AMG GT M178 engine installation take?

Typically 18–22 hours due to mid-front layout:
• Subframe, steering rack, and front suspension must be removed
• Requires AMG-specific diagnostic reset (XENTRY DAS procedure 190-880)
• Engine Finders partners offer fixed-price installs from £1,200 including fluids