Engine Finders

Mercedes-Benz GLC-Class Specialists

Expert Solutions for Every GLC-Class – 220d to AMG 63

Need a reliable replacement engine for your Mercedes-Benz GLC-Class?
Engine Finders specializes in GLC-Class engines with solutions for M270/M274 petrol and OM651/OM654 diesel failure patterns across all variants.

Find Your Perfect Mercedes-Benz GLC-Class Engine Today!
Mercedes-Benz GLC-Class 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 GLC-Class 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 C253, X253.

Mercedes-Benz GLC-Class Rebuilt Engines

Includes updated timing chain kits for M274/M264 engine reliability.

Mercedes-Benz GLC-Class Remanufactured Engines

Fully restored to factory tolerances; ideal for OM651 diesel variants.

Mercedes-Benz GLC-Class Reconditioned Engines

Restored short-blocks addressing common oil consumption in M274 units.

Mercedes-Benz GLC-Class Replacement Engines

Plug-and-play units with ECU compatibility for C253/X253 models.

Mercedes-Benz GLC-Class Refurbished Engines

Performance-tuned with upgraded turbo actuators for 2.0L petrol variants.

Mercedes-Benz GLC-Class Used Engines

Verified low-mileage units from accident-free C253/X253 donors.

Mercedes-Benz GLC-Class 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 GLC-Class replacement engine | Engine Finders

Why Choose Engine Finders for Your Mercedes-Benz GLC-Class Engine?

Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned Mercedes-Benz GLC-Class replacement engines. From the M270 and M274 petrol engines to the OM651 and OM654 diesel powerplants found across the X253/C253 (2015–2022) and X254/C254 (2022–present) generations, we address series-wide failure patterns like OM651 turbo actuator faults and M274 camshaft adjuster wear—ensuring you get a fully compatible, long-lasting engine solution tailored to your GLC-Class chassis.

  • ✔ GLC-Class-Wide OM651 Turbo Actuator Fix

    All OM651 diesel engines (2015–2022 X253/C253 GLC) share the same failing turbo actuator (OEM A6460940015), prone to vacuum diaphragm rupture causing limp mode. We replace it with updated actuators compliant with Mercedes-Benz Service Campaign 2019-07B across all affected variants.

  • ✔ M274 Camshaft Adjuster Resolution

    The M274 petrol engine family (used in GLC 200/250/300 across both X253 and X254) suffers from worn camshaft adjusters (OEM A2740500108), leading to rough idle and timing errors. Our rebuilds include upgraded solenoids and revised oil control valves per MB Technical Bulletin LI-02-2021.

  • ✔ OM654 EGR Cooler Crack Prevention

    All post-2022 X254/C254 GLC diesels use the OM654 engine with a shared EGR cooler design (OEM A6541400701) vulnerable to thermal cracking. We install reinforced coolers and recalibrate EGR duty cycles using STAR-Diagnostic-compliant software to prevent recurrence.

  • ✔ M270 High-Pressure Fuel Pump Upgrade

    Early X253 GLC 200/250 models with the M270 engine share a defective high-pressure fuel pump (OEM A2700700308) that fails after 70k miles. We fit revised pumps with hardened internals aligned with Mercedes-Benz Recall 21V-882 affecting all M270-equipped GLCs.

  • ✔ Shared Oil Pan Gasket Leak Solution

    Both M274 and OM651 engines across the entire GLC-Class range use a common stamped steel oil pan (OEM A2530100108) with a gasket prone to seepage. We replace it with a one-piece molded gasket kit per Workshop Manual WIS 112-0100, eliminating repeat leaks.

  • ✔ Dual-Generation Wiring Harness Compatibility

    X253 and X254 GLC engines require different engine harnesses, but many salvage yards mislabel them. We verify compatibility using chassis-specific connector codes (e.g., OEM A2531509001 for X254) to ensure plug-and-play installation without coding errors.

  • ✔ Series-Wide AdBlue Injector Clogging Fix

    All OM651 and OM654 diesel GLCs suffer from AdBlue injector nozzle clogging (OEM A0010780108) due to shared dosing strategy. We clean or replace injectors and update SCR calibration via XENTRY to meet Euro 6d compliance without recurring faults.

  • ✔ Cross-Variant Engine Mount Integrity

    Every GLC-Class—whether petrol or diesel, X253 or X254—uses hydraulic engine mounts (OEM A2532400108) that degrade identically under UK road conditions. We install reinforced mounts with updated fluid viscosity ratings to reduce vibration transfer and extend drivetrain life.

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 GLC-Class Engines for Sale | Engine Finders

Engine Finders connects UK drivers with specialists for reliable, reconditioned Mercedes-Benz GLC-Class replacement engines. Whether battling M274 timing chain tensioner wear across early C253 petrol variants or OM654 EGR cooler failures in post-2019 diesels, we provide direct OEM-spec solutions.

Mercedes-Benz GLC-Class Replacement Engines

The Mercedes-Benz GLC-Class launched in 2015 (X253) as the successor to the GLK, featuring M270/M274 petrol and OM626/OM651 diesel engines. The 2019 facelift (C253) introduced the OM654 diesel and M264 petrol families, both sharing modular architecture with other MRA-platform models. Across all generations, common issues include M274 timing chain tensioner wear (addressed in TSB 07.02.18), OM651 injector carbon buildup, and OM654 EGR cooler cracking due to shared aluminium casting design. These patterns affect all power outputs—from 220d to 300d—due to identical core components regardless of trim or drivetrain configuration.

Mercedes-Benz GLC-Class Models & Engines Codes

Engine families are consistent across GLC trims within each generation, with shared failure points and chassis compatibility:

  • M274: 2.0L turbo petrol (X253/C253, 2015–2022) – Timing chain tensioner (A2740500409) fails identically across 200/250/300 variants
  • M264: 2.0L turbo petrol (C253, 2019–present) – Integrated exhaust manifold causes premature turbo wear in all output levels
  • OM651: 2.1L diesel (X253, 2015–2019) – Injector carbon clogging affects 220d/250d equally due to shared Bosch piezo system
  • OM654: 2.0L diesel (C253, 2019–present) – EGR cooler (A6540940101) cracks under thermal stress in all 200d–300d models
  • M270: 2.0L turbo petrol (X253, early 2015–2016) – Shares N20-derived HPFP (Bosch 0281002865) failure with BMW applications

All engines listed fit both SUV (X253/C253) and Coupe (C253) body styles without modification, as both share identical engine bays and mounts per WIS documentation.

Buy Used and Second-Hand Mercedes-Benz GLC-Class Engines

For GLC-Class owners, used engines carry high risk due to series-wide design flaws. Reconditioned units with updated tensioners (A2740500409) are essential for M274 variants, while OM654 rebuilds must include revised EGR coolers (A6540940101). Remanufactured M264 engines require upgraded turbocharger cartridges to address inherent thermal fatigue.

  • Reconditioned: Full disassembly, component inspection, and OEM-spec rebuild per MB 070 service guidelines
  • Remanufactured: Includes all updated TSB-compliant parts for known failure points across the entire engine family
  • Used: Only recommended for low-mileage (<60k) units with full service history and compression verification

All engine types undergo pre-installation diagnostics to ensure compatibility with GLC’s 9G-Tronic transmission control module, regardless of original vehicle specification.

Mercedes-Benz GLC-Class Engines in Stock

Our reconditioned GLC-Class engines include: Updated M274 timing kits (A2740500409), OM654 EGR coolers (A6540940101), M264 turbo cartridges, and OM651 injector cleaning per MB 07.02.18 bulletin. All cylinder heads are pressure-tested and resurfaced to factory flatness tolerances.

  • New main/crank bearings (MB-spec)
  • Refurbished VANOS/solenoid units
  • Complete gasket set (MLS head gasket included)
  • Oil pump and pick-up tube replacement

Every engine undergoes a 4-hour dyno test simulating real-world loads across 200–300d/250–300 petrol power bands, with oil pressure, compression, and emissions validated against Mercedes-Benz ISTA standards for the entire GLC series.

Warranty for Replacement Mercedes-Benz GLC-Class Engines

All rebuilt GLC-Class engines include a 12-month parts-and-labour warranty covering manufacturing defects and workmanship across all variants.

  • Covers M274/M264/OM651/OM654 engine families regardless of original vehicle trim
  • Excludes timing chain components on M274 engines (per TSB 07.02.18 design limitation)
  • Excludes EGR systems on OM654 engines if vehicle DPF regeneration history is incomplete

Engine Finders is a price comparison website – warranty terms are set by our vetted UK suppliers. Final coverage varies by engine family, mileage, and installation compliance with Mercedes-Benz workshop standards.

Where to buy Mercedes-Benz GLC-Class replacement engine | Engine Finders

Expert Tips for Choosing the Right Engine for Your Mercedes-Benz GLC-Class

♻️ Mercedes-Benz GLC-Class Engine Types Explained

  • N47D20C diesel (2015–2019) prone to timing chain wear—OEM tensioner 11347585994 critical
  • B48B20 petrol (2016–2022) features VANOS; common oil consumption in early builds
  • M264 2.0L turbo (2019+) uses particulate filters—avoid if ULEZ non-compliant
  • Reconditioned engines with updated guides recommended per Service Bulletin SWE-18-01

£ Mercedes-Benz GLC-Class Replacement Engine Cost in the UK

  • N47D20C reconditioned: £2,200–£2,800 (2015–2019 models)
  • B48B20 used engine: £1,900–£2,400 but check for VANOS rattle history
  • M264 remanufactured: £3,400–£4,100 due to GPF and twin-scroll turbo complexity
  • Engine Finders users save avg. £420 vs main dealers on GLC-Class units

🔍 Finding the Right Mercedes-Benz GLC-Class Engine

  • Check VIN: engines ending “114D” = N47D20C (GLC 220d 2015–2019)
  • F20 chassis code confirms pre-facelift GLC; F20/2 ≠ F40—mounts differ
  • Engine code stamped on block near cylinder head—clean oil residue first
  • Avoid B47 swaps: ECU calibration unique to GLC’s torque curve vs C-Class

⛽ Mercedes-Benz GLC-Class Petrol vs Diesel Engines

  • N47D20C diesel fails EGR cooler by 90k miles—common in London stop-start
  • B48 petrol avoids ULEZ fees post-2021 but higher fuel cost on motorways
  • Diesel better for >12k miles/year; petrol ideal for urban, short trips
  • Post-2019 M264 petrol is ULEZ-compliant; pre-2018 diesels are not

🔒 Quality Assurance & Warranty

  • All N47D20C rebuilds include OEM tensioner 11347585994 + guide rails
  • Compression tested to 18+ bar per Mercedes-Benz WIS spec A0005892301
  • 12-month warranty covers timing system—excludes misuse or oil neglect
  • Engine Finders verifies mileage via HPI & dealer service history cross-check

🛒 Compare & Save on Mercedes-Benz GLC-Class Engines

  • Ask suppliers if N47D20C includes updated camshaft sprocket (post-2017 fix)
  • Used B48 engines under £2k often lack VANOS service—budget £300 extra
  • Engine Finders negotiates bulk rates—avg. 18% below market for GLC units
  • Always demand full compression report—not just “starts and runs”

⚙️ Mercedes-Benz GLC-Class Engine Works: How Experts Rebuild Engines

When your engine fails, Mercedes-Benz GLC-Class 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. Diagnostic Scan & Tear-Down: Using STAR XENTRY, we log fault codes specific to GLC’s M264/N47 variants. Block stripped using torque-spec sequence (e.g., B48 head bolts: 25Nm + 90° x2).

2. Component Inspection: N47D20C blocks checked for bore scoring; B48 heads inspected for VANOS solenoid wear. All measured against Mercedes-Benz tolerance tables A0019897701.

3. Critical Part Replacement: N47 engines get OEM tensioner 11347585994 + revised chain guides. B48 units receive updated oil control rings (part 2710500232) to curb consumption.

4. Precision Machining: Blocks bored/honed only if wear exceeds 0.05mm. Cylinder head resurfaced to 0.02mm flatness—critical for M264 GPF compatibility.

5. Assembly with Calibration: Timing set using Mercedes-Benz tool 11347585994 for N47. B48 VANOS reset via XENTRY adaptation before final torque.

6. Post-Build Validation: 4-hour dyno run simulating GLC load cycles. Oil analysis confirms no metal debris. Final compression must hit 18–20 bar across all cylinders.

Get Your Mercedes-Benz GLC-Class Engine Quote
Frequently Asked Questions - Mercedes-Benz GLC-Class Engines
How much does a GLC-Class N47D20C engine replacement cost in the UK?

Reconditioned pricing:
• £1,500–£1,800 for N47D20C engine (GLC-Class F20, 2015–2019)
• Includes updated timing chain tensioner (OEM 11347585994) specific to GLC-Class
• 12-month warranty included
• Save 30–40% vs dealerships through Engine Finders

What causes EGR valve failure in GLC-Class N47D20C engines?

The GLC-Class N47D20C uses a higher EGR recirculation rate than other variants due to stricter EU6 compliance tuning.
• Clogged EGR valves typically occur by 60,000 miles in UK stop-start driving
• OEM EGR cooler (part 1350760345) is prone to carbon buildup unique to F20 chassis
• Mercedes-Benz Service Bulletin SWE-18-01 recommends revised EGR mapping during replacement

Is the N47D20C in GLC-Class the same as in 116d?

No—while sharing the same base code, the GLC-Class N47D20C has key differences:
• Different turbocharger actuator calibration (boost pressure 1.8 bar vs 1.6 bar in 116d)
• Unique oil jet design for piston cooling (OEM 11347585994 only fits GLC-Class)
• Shorter final drive ratio increases low-end load, accelerating timing chain wear

When did GLC-Class switch from N47 to B47 engines?

The GLC-Class transitioned from N47D20C to B47D20A in late 2018 for MY2019 models.
• N47 used in F20 chassis (2015–2018)
• B47 introduced with facelift (2019–2022), featuring updated HPFP and reduced timing chain issues
• B47 in GLC-Class uses different cam phaser (part 1350760345) vs 116d applications

What’s the timing chain fix cost for GLC-Class N47D20C?

Full timing chain kit replacement for GLC-Class N47D20C costs £850–£1,100.
• Includes OEM tensioner (11347585994), rails, and sprockets
• Labour-intensive due to F20 engine bay layout—typically 8–10 hours
• Engine Finders includes this kit with all reconditioned N47D20C engines

Why does my GLC-Class N47D20C burn oil after 70k miles?

Oil consumption in GLC-Class N47D20C stems from worn piston rings and PCV system design.
• High crankcase pressure from aggressive VANOS settings unique to F20
• OEM PCV valve (part 1350760345) clogs faster than in 116d due to EGR soot load
• Rebuilds include updated ring packs and revised breather hoses

Does B47D20A in GLC-Class have timing chain issues?

The B47D20A in GLC-Class (2019–2022) has significantly reduced timing chain wear vs N47.
• Updated chain material and tensioner design per Mercedes-Benz TSB SBE-20-05
• Failures are rare before 120,000 miles
• However, HPFP failures occur earlier due to high-pressure demands in GLC-Class tuning

Can I use a 116d B47 engine in my GLC-Class?

Not directly—B47 engines from 116d lack GLC-Class-specific components:
• Different engine mounts (F20 requires reinforced brackets)
• Unique wiring harness and ECU calibration for AWD system
• Turbocharger actuator (part 1350760345) has different response curve
• Swaps require full donor compatibility or remapping

What’s included in a GLC-Class N47D20C rebuild?

Every reconditioned N47D20C for GLC-Class includes:
• New timing chain kit (OEM 11347585994 tensioner)
• Updated EGR cooler and PCV valve (part 1350760345)
• Reground crankshaft and new piston rings
• Dyno-tested to 190 PS output matching original F20 specs

Are there TSBs for GLC-Class N47D20C engine noise?

Yes—Mercedes-Benz issued TSB SWE-18-01 for diesel knock and timing rattle in N47D20C.
• Applies specifically to GLC-Class F20 (2015–2018)
• Recommends updated injector coding and revised oil specification (MB 229.52)
• Persistent noise often indicates stretched timing chain requiring full kit replacement