GLK Class CDI Diesel Engines
from £2,156 to £4,500
Rebuilt units from £2,156 · Common codes: OM651.911, OM651.921, OM651.941, OM651.901
Mercedes-Benz ENGINE MARKETPLACE
Mercedes GLK M272/OM642 Engine Solutions - UK Specialists
Get quotes from trusted UK Mercedes GLK engine specialists. Compare reconditioned & used engines for GLK 200 to GLK 350 - M272/OM642 covered. Get a quote before it's too late.
Supply & Fit Available
12-Month Warranty
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100+ Suppliers
GLK Class Petrol V6 Engines
from £2,800 to £6,200
Rebuilt units from £2,800 · Common codes: M272.948, M272.960, M276.957, M276.958
GLK Class V6 CDI Engines
from £3,200 to £6,847
Rebuilt units from £3,200 · Common codes: OM642.901, OM642.920, OM642.930
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Supply & fit available - parts and labour from vetted specialistsInstant engine replacement quote - 100% free, no obligationEngine replacement near me - UK-wide specialist networkCompare reconditioned, rebuilt & used engine pricesSupply & fit available - parts and labour from vetted specialistsHow It Works
3 Simple Steps3 Simple Stepsto Finding the Best Mercedes Benz GLK Class Replacement Engineto Finding the Best Mercedes Benz GLK Class Replacement Engine
12-Month Warranty
Supply & Fit Available
Nationwide Delivery
Trusted UK Suppliers
Most replacements completed within 3-5 days.
Live UK Engine Market Data
What Are UK Drivers Paying for Mercedes-Benz GLK Class Engine Replacement
The table below details typical UK rebuilt engine costs across Mercedes-Benz GLK Class variants, covering documented failures, factory codes, fuel types, and displacements based on current market data.
Average Market Prices
↻ Last updated: 4 Aug 26, 9:26
Customer Reviews
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Variants We Cover
Mercedes-Benz GLK Class Engine ReplacementAll Variants Covered
Mercedes-Benz GLK Class GLK 280
M272.948 3.0L V
Rebuilt Engines: £3,400-£5,000
Mercedes-Benz GLK Class GLK 300
M272.948 3.0L V
Rebuilt Engines: £3,600-£5,200
Not sure which variant your Mercedes-Benz GLK Class is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.
GLK Class
Engine Codes
Mercedes-Benz GLK Class Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the Mercedes-Benz GLK Class across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.
Diesel Engines
Extracted from detailed diesel engine families across Mercedes Benz GLK Class variants.
OM651.911 - 2.1L Diesel
Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
Compatible variants
GLK 220 CDIGLK 220 CDI 4MATICGLK 220 CDI AvantgardeGLK 220 CDI Sport
Avg. rebuilt price
£2,200 - £3,400
Supply only
Technical specifications
- Fuel type
- Diesel
- Engine size
- 2.1L
- Power output
- 170 hp
- Years fitted
- 2008-2015
Common failures
- ●Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
- ●Confirm exact engine code and fitment before ordering.
- ●Ask for warranty and supply & fit terms.
Not sure which engine code?
GLK Class
Common Problems
Mercedes-Benz GLK Class Engine Problems - What It Costs to Fix & When Replacement Makes Sense
The Mercedes-Benz GLK Class X204 generation (2008-2015) is generally robust, but the OM651 four-cylinder diesel, OM642 V6 diesel, and M272 V6 petrol engines each have well-documented weak points that drive replacement enquiries. Every rebuilt engine supplied through EngineMarket includes upgraded internal components specifically designed to address these...
Mercedes-Benz GLK Class OM651 Timing Chain Failure - Why Early Diesel Engines Fail Prematurely
Mercedes-Benz GLK Class OM651 Timing Chain Failure
Most affected vehicles
Mercedes-Benz GLK Class 200 CDI220 CDI
Mercedes-Benz GLK Class 200 CDI, 220 CDI, 250 CDI (2008-2011, OM651.901, OM651.911, OM651.921)
Failure mileage range
50,000 - 90,000 miles
Typical failure window
Root cause
Early OM651 units feature a rear-mounted timing chain with a hydraulic tensioner that loses pressure prematurely. This causes chain stretch, guide wear, and a distinctive rattling noise on cold starts. If ignored, the chain can snap, causing catastrophic valve and piston collision.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Preventative Timing Chain Kit Replacement | £1,900 - £2,600 | £950 - £1,500 | Full tensioner upgrade, chain guides, and rail replacement without engine removal | Viable only if caught early before chain stretch or valve contact occurs |
| Full Replacement - Rebuilt / Reconditioned OM651 Engine | £6,500 - £8,800 | £2,200 - £3,400 | Complete engine swap with upgraded timing chain kit, new injectors, and EGR components fitted as standard | Permanent solution with 12-month warranty; eliminates all pre-facelift weak points |
Our recommendation
If your Mercedes-Benz GLK Class OM651 is exhibiting a cold-start rattle below 70,000 miles, the preventative chain kit replacement is cost-effective. However, if the engine has already suffered timing jump or oil pressure loss, a minor repair is a financial risk. We recommend a fully rebuilt OM651 unit, which includes the upgraded tensioner as standard and restores long-term reliability.
Compare rebuilt OM651 Mercedes-Benz GLK Class engine prices for your variantReplacement Engine Options
Mercedes-Benz GLK Class Engine TypesOptions, Costs & What to Expect
Every engine type is available through our UK network with typical price ranges based on your variant, engine code, and budget requirements.
Mercedes-Benz GLK Class Reconditioned Engines (Recon)£2,400 - £3,900((supply only))
Mercedes-Benz GLK Class Rebuilt Engines£2,200 - £4,100((supply only))
Mercedes-Benz GLK Class Used Engines£1,100 - £2,400((supply only))
Mercedes-Benz GLK Class Remanufactured Engines£3,600 - £5,800((supply only))
Mercedes-Benz GLK Class Refurbished Engines£1,900 - £3,200((supply only))
Compare Mercedes Benz GLK Class engine prices with vetted UK suppliers
Engine Sizes
Mercedes-Benz GLK Class Engines by SizeFind the Right Displacement for Your Variant
Every engine displacement officially fitted to the Mercedes-Benz GLK Class is listed below, complete with compatible factory codes, production years, and documented failure notes to ensure accurate part matching.
Serving as the backbone of the X204 generation’s diesel lineup, this compact four-cylinder unit powered the vast majority of UK models from launch through to 2015. The engine family introduced advanced common-rail injection and, in later facelift versions, integrated AdBlue technology to meet stricter Euro 5 emissions standards without sacrificing low-end torque.
⚙
Engine Code(s)
OM651.901, OM651.911, OM651.921, OM651.941
▣
Compatible Models (UK)
200 CDI (2008-2011), 220 CDI (2008-2015), 250 CDI (2009-2015), 220 BlueTEC (2012-2015), 250 BlueTEC
ϟ
Power output
Verified by registration
△
Common Failure Points
Rear-mounted timing chain tensioner wear, EGR cooler leakage, turbo actuator calibration drift
Production Years: 2012-2015
Get quotes for Mercedes-Benz GLK Class 2.1L diesel enginesMercedes-Benz GLK Class Engines Fuel Type
Mercedes-Benz GLK Class Engines by Fuel Type
Choose your Mercedes-Benz GLK Class engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early OM651 CDI to the latest M276 direct-injection petrol.
Mercedes-Benz GLK Class Diesel Engines
DieselThe dominant fuel choice across the X204 generation (2008-2015), CDI diesel engines power 70% of UK GLK models and drive the highest volume of replacement enquiries due to fleet usage and high-mileage ownership.
Common Mercedes-Benz GLK Class Diesel Engine Families
- •OM651.911 - 2.1L four-cylinder powering GLK 220 CDI, known for timing chain tensioner concerns on early pre-facelift units
- •OM651.921 - 2.1L twin-turbo variant for GLK 250 CDI, delivering 204hp with upgraded turbo actuator reliability
- •OM642.920 - 3.0L V6 diesel for GLK 350 CDI, refined motorway cruiser with oil cooler seal vulnerability
Found In
- •X204 Pre-facelift (2008-2011) - OM651.901, OM651.911, OM642.930
- •X204 Facelift (2012-2015) - OM651.921, OM651.941, OM642.920 with Euro 5/6 compliance
Known For
- •Exceptional motorway fuel economy and strong low-end torque for towing
- •OM651 rear-mounted timing chain tensioner wear between 60k-90k miles on early models
- •OM642 oil cooler and EGR seal degradation leading to coolant contamination risks
Typical Diesel Models
- •GLK 220 CDI
- •GLK 250 CDI
- •GLK 350 CDI
1 of 3
Mercedes-Benz GLK Class Diesel Engines
DieselThe dominant fuel choice across the X204 generation (2008-2015), CDI diesel engines power 70% of UK GLK models and drive the highest volume of replacement enquiries due to fleet usage and high-mileage ownership.
Common Mercedes-Benz GLK Class Diesel Engine Families
- •OM651.911 - 2.1L four-cylinder powering GLK 220 CDI, known for timing chain tensioner concerns on early pre-facelift units
- •OM651.921 - 2.1L twin-turbo variant for GLK 250 CDI, delivering 204hp with upgraded turbo actuator reliability
- •OM642.920 - 3.0L V6 diesel for GLK 350 CDI, refined motorway cruiser with oil cooler seal vulnerability
Found In
- •X204 Pre-facelift (2008-2011) - OM651.901, OM651.911, OM642.930
- •X204 Facelift (2012-2015) - OM651.921, OM651.941, OM642.920 with Euro 5/6 compliance
Known For
- •Exceptional motorway fuel economy and strong low-end torque for towing
- •OM651 rear-mounted timing chain tensioner wear between 60k-90k miles on early models
- •OM642 oil cooler and EGR seal degradation leading to coolant contamination risks
Typical Diesel Models
- •GLK 220 CDI
- •GLK 250 CDI
- •GLK 350 CDI
Mercedes-Benz GLK Class Petrol Engines
PetrolOffering refined performance across the X204 range, petrol variants feature supercharged four-cylinder and naturally aspirated V6 options, with later facelift models benefiting from direct-injection M276 technology.
Common Mercedes-Benz GLK Class Petrol Engine Families
- •M271.860 - 1.8L supercharged four-cylinder for GLK 200, compact power with timing chain tensioner sensitivity
- •M272.948 - 3.0L V6 powering GLK 280/300, smooth refinement but balance shaft gear wear risk on early units
- •M272.960 - 3.5L high-output V6 for pre-facelift GLK 350, premium performance with balance shaft vulnerability
Found In
- •X204 Pre-facelift (2008-2011) - M271.860, M272.948, M272.960
- •X204 Facelift (2012-2015) - M276.957, M276.958 with direct injection and Euro 5 compliance
Known For
- •Smooth, vibration-free V6 refinement ideal for premium SUV cruising
- •M272 balance shaft gear wear causing metallic knocking between 60k-110k miles on pre-facelift units
- •M271 supercharger coupling wear and timing chain tensioner failure on high-mileage GLK 200 models
Typical Petrol Models
- •GLK 200
- •GLK 280
- •GLK 300
Mercedes-Benz GLK Class Hybrid / Electrified Engines
MHEVThe Mercedes-Benz GLK Class X204 generation was not offered with hybrid, plug-in hybrid, mild hybrid, or electric powertrains in the UK market.
Important Notes
- •No hybrid, MHEV, PHEV, or BEV variants were officially sold for the GLK Class in the UK
- •All replacement enquiries relate to conventional diesel or petrol combustion engines only
- •For electrified Mercedes SUV options, consider the later GLC Class range with EQ Boost technology
Not sure which fuel type your Mercedes-Benz GLK Class has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK Mercedes-Benz GLK Class specialists.
Engine YearsGet quotes for 2008 Mercedes-Benz GLK Class replacement engines →
Mercedes-Benz GLK Class Engines by YearWhat Was Fitted & WhenMercedes-Benz GLK Class Engines by Year - What Was Fitted & When
This technical timeline covers all major engine changes across the Mercedes-Benz GLK Class X204 production run (2008-2015), organised so owners can quickly identify their engine code and compare rebuilt engine prices from UK specialists.
⚙Key Changes
- ✓X204 platform introduced as Mercedes-Benz compact SUV entry point
- ✓OM651.901/911 diesel engines replaced older M111/M646 units
- ✓M271 supercharged petrol and M272 V6 petrol options launched alongside diesel range
- ✓4MATIC all-wheel drive available across most variants from day one
▣Main Engines
OM651.901- 2.1L diesel (GLK 200 CDI)
OM651.911- 2.1L diesel (GLK 220 CDI)
OM642.930- 3.0L V6 diesel (GLK 320 CDI)
M271.860- 1.8L supercharged petrol (GLK 200)
M272.948- 3.0L V6 petrol (GLK 280)
▰Popular Models
- •Mercedes-Benz GLK 220 CDI
- •Mercedes-Benz GLK 320 CDI
- •Mercedes-Benz GLK 200
- •Mercedes-Benz GLK 280
- •Mercedes-Benz GLK 350
🔧Known For
- ✓OM651 early-model timing chain tensioner vulnerability emerges in UK fleet usage
- ✓M272 V6 balance shaft gear wear risk on pre-2009 production blocks
- ✓Strong motorway refinement and towing capability from OM642 V6 diesel
- ✓High initial demand for GLK 220 CDI as company car and fleet choice
Engine Codes Covered:
OM651.901OM651.911OM642.930M271.860M272.948M272.960Not sure which year your Mercedes-Benz GLK Class was built- Enter your registration number and we'll identify the exact engine, model year, and compatible replacement options instantly - all backed by a minimum 12-month warranty from UK Mercedes-Benz GLK Class specialists.
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