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CLK Marketplace
Mercedes CLK M271/M272/OM642 Engine SolutionsUK Specialists
Get quotes from trusted UK Mercedes CLK engine specialists. Compare reconditioned & used engines for CLK 200 to CLK 63 AMG - M271/M272/OM642 covered. Get a quote before it's too late.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
CLK AMG Engines- from £3,200 to £9,500
Rebuilt units from £3,200
Common codes: M113 E55, M156, M113 E50
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Instant 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 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 specialists
Instant 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 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 specialists
How It Works
3 Simple Steps3 Simple Stepsto Finding the Best Mercedes Benz CLK Replacement Engineto Finding the Best Mercedes Benz CLK 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
CLK Engine Replacement
What Are UK Drivers Paying for Mercedes Benz CLK Engine Replacement-
The table below shows typical UK rebuilt engine costs across Mercedes Benz CLK variants, covering documented failure causes, chassis generations, engine codes, and fuel types 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 CLK Engine ReplacementAll Variants Covered
Mercedes Benz CLK200 Kompressor
M271 1.8L Petrol
Rebuilt Engines: £950-£1,900
Mercedes Benz CLK230 Kompressor
M111 2.3L Petrol
Rebuilt Engines: £1,100-£2,100
Mercedes Benz CLK240
M112 2.6L Petrol
Rebuilt Engines: £1,150-£2,200
Mercedes Benz CLK280
M272 3.0L Petrol
Rebuilt Engines: £1,400-£2,800
Mercedes Benz CLK320
M112 3.2L Petrol
Rebuilt Engines: £1,200-£2,500
Mercedes Benz CLK350
M272 3.5L Petrol
Rebuilt Engines: £1,500-£3,100
Mercedes Benz CLK500
M113 5.0L Petrol
Rebuilt Engines: £1,800-£3,800
Not sure which variant your Mercedes Benz CLK is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.
Engine Codes
Mercedes Benz CLK Engine CodesMercedes Benz CLK Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the Mercedes Benz CLK across all C208/A208 and C209/A209 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 CLK variants.
Extracted from detailed diesel engine families across Mercedes Benz CLK variants.
Can't find your engine code-
Can‘t find your engine code- Enter your registration number above - we’ll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Mercedes Benz CLK engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.
Common Problems
Mercedes Benz CLK Engine Problems
Every rebuilt engine includes a minimum 12-month unlimited mileage warranty.
1. Mercedes CLK350 / CLK280 M272 Balance Shaft Failure
The Single Biggest V6 Problem
Most Affected Vehicles
Mercedes CLK280
CLK350
Production Years: 2005 - 2009
Engine: C209 / M272 E30 / M272 E35 engines
Failure Mileage Range
60,000 - 100,000 miles
Typical failure window
Root Cause
The balance shaft idler gear sprocket was manufactured from a soft metal that wears prematurely. As the sprocket teeth wear down, the timing chain becomes slack, causing incorrect camshaft timing and triggering fault codes P0016/P0017/P0018/P0019 .
Repair Options & Estimated Costs (UK ranges)
| Repair Tier | Dealer Price | Specialist Price | What It Involves | Longevity / Suitability |
|---|---|---|---|---|
Full Timing Chain & Balance Shaft Replacement - Complete repair Minor | £3,500 - £5,000 | £2,000 - £3,500 | Replacement of balance shaft sprocket, timing chain, tensioners, guides. Engine does not need full removal but requires extensive front-end disassembly | 60k-100k miles if upgraded hardened sprockets fitted. Only viable if caught before catastrophic failure |
Full Replacement - Rebuilt / Reconditioned Engine Best Value | £6,000 - £9,000 | £3,000 - £5,500 | Complete replacement engine with upgraded balance shaft components, bench tested, supply & fit, 12-month warranty | 100k+ miles with upgraded components. Best option when engine has already suffered timing-related valve damage |
Our Recommendation
Best next step for mercedes clk350 / clk280 m272 balance shaft failure
On a CLK280 or CLK350 worth £3,000-£6,000, the repair cost can approach the vehicle's value. If the car is in excellent condition and you catch the problem early (P0016/P0017 codes with no drivability issues), specialist repair at £2,000-£2,500 is worthwhile. However, if the timing chain has slipped and caused valve damage - or if the car has other major issues - we recommend replacement with a rebuilt unit that has the upgraded sprockets factory-fitted.
Don't Let Engine Failure Write Off Your Mercedes CLK
The CLK is now 15-23 years old - its value sits firmly in mainstream affordability territory, but that doesn't mean a failed engine should send yours to the scrapyard. Whether you're facing M272 balance shaft failure, M271 timing chain rattle, OM642 oil leaks, or a failed kompressor, EngineMarket makes it simple to compare prices from trusted UK Mercedes CLK specialists. Every rebuilt engine supplied through our network includes upgraded components designed to address the original failure point, bench testing before delivery, and a minimum 12-month unlimited mileage warranty. Compare prices today and get back on the road without the main dealer premium.
Compare Mercedes CLK Engine Replacement Prices Now →Mercedes Benz CLK Engine Problems
What It Costs to Fix & When Replacement Makes Sense
Replacement Engine Options
Mercedes Benz CLK Replacement Engine Types
Every engine type is available through our UK network with typical price ranges based on your CLK variant, engine code and budget.
Mercedes Benz CLK Reconditioned Engines (Recon)£1,800 - £4,200(supply only)
Mercedes Benz CLK Rebuilt Engines£1,500 - £3,800(supply only)
Mercedes Benz CLK Used Engines£950 - £2,500(supply only)
Mercedes Benz CLK Remanufactured Engines£2,200 - £5,500(supply only)
Mercedes Benz CLK Supply & Fit Engines
Nationwide fitting service paired with any engine type above. Includes old unit removal, new engine installation and testing.
Typical Price
£400 - £800
(added to engine price)
Engine Sizes
Mercedes Benz CLK Engines by SizeFind the Right Displacement for Your Variant
Every displacement fitted to the CLK across C208/A208 (1997-2002) and C209/A209 (2002-2010) generations is listed below, with compatible engine codes, variants, years and common failure notes.
The 2.1-litre four-cylinder turbodiesel (OM646) arrived in 2005 as the entry-level diesel for the facelift C209 CLK220 CDI. It offered economical running costs with 148bhp and 340Nm of torque, making it a popular choice for daily drivers seeking lower fuel bills without sacrificing Mercedes refinement .
| ENGINE CODE(S) | OM646 DE22 LA |
| COMPATIBLE MODELS (UK) | CLK220 CDI |
| PRODUCTION YEARS | C209, 2005-2010 |
Common Failure Points
Injector seal leakage, EGR valve carbon build-up at higher mileages
Not sure which engine size your Mercedes Benz CLK needs- Enter your registration number above - we'll identify the exact displacement, engine code and compatible replacement options instantly. All engines supplied through EngineMarket include a minimum 12-month unlimited mileage warranty from UK Mercedes CLK specialists.
Mercedes Benz CLK Engines Fuel Type
Mercedes Benz CLK Engines by Fuel Type
Choose your Mercedes Benz CLK engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from the early C208 diesel to the final C209 AMG V8.
Diesel power arrived with the C209 generation in 2002 and ran through to 2010, with the OM642 V6 in the CLK320 CDI becoming the most sought-after oil-burner for its effortless torque and motorway refinement.
Common Mercedes Benz CLK Diesel Engine Families
OM642
3.0 V6 turbodiesel, CLK320 CDI, known for oil cooler seal failures
OM646
2.1 four-cylinder, CLK220 CDI, reliable but injector seals leak
OM612
2.7 five-cylinder, CLK270 CDI, cult classic with turbo bearing issues
Found In
C209/A209 (2002-2010)
OM612 (2002-2005), OM646 (2005-2010), OM642 (2005-2010)
Known For
Exceptional motorway fuel economy - 45-50mpg realistic
OM642 oil cooler seal failure requires intake manifold removal
High replacement demand on CLK320 CDI due to V6 refinement
Lower running costs than petrol equivalents
Typical Diesel Models
CLK220 CDICLK270 CDICLK320 CDI
Not sure which fuel type your Mercedes Benz CLK 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 CLK specialists.
Engine Years
Mercedes Benz CLK Engines by YearWhat Was Fitted & When
This section covers all major engine changes across the Mercedes CLK’s production timeline from 1997 to 2010, organised so owners can quickly identify their engine and compare rebuilt engine prices from UK specialists.
1997-1999 - C208 Launch: Four & Six-Cylinder Petrol Range
Major Engine Changes4 engine highlights
The CLK debuted in June 1997, sharing the W202 C-Class platform but wearing W210 E-Class styling - and launching a new market niche for Mercedes-Benz .
Key Changes
CLK launched in coupé form (C208) as E-Class coupé replacement
Three initial engines: 2.0-litre naturally aspirated four-cylinder, 2.0-litre supercharged, 2.3-litre supercharged
CLK 320 V6 (3.2-litre, 218bhp) joined within months of launch
Elegance and Sport trim levels offered
Known For
Elegant pillar-less coupé styling with distinctive E-Class face
M111 supercharged engines offer strong torque but supercharger clutches fail
M112 V6 is one of Mercedes’ most reliable engines of the era
Convertible (A208) launched June 1998
Main Engines
M111.945 - 2.0 petrol (CLK 200, 136hp)
M111.944 - 2.0 supercharged petrol (CLK 200 Kompressor, 192hp)
M111.973 - 2.3 supercharged petrol (CLK 230 Kompressor, 193hp)
M112.940 - 3.2 V6 petrol (CLK 320, 218hp)
Popular Models
Mercedes CLK 200
Mercedes CLK 200 Kompressor
Mercedes CLK 230 Kompressor
Mercedes CLK 320
Engine Codes Covered
M111.945M111.944M111.973M112.940
Common Replacement Enquiries
Mercedes CLK 200 engine replacement
Mercedes CLK 320 engine price
CLK 230 Kompressor rebuilt engine
Get quotes for 1997-1999 Mercedes CLK replacement engines
1997-1999 - C208 Launch: Four & Six-Cylinder Petrol Range
Major Engine Changes4 engine highlights
The CLK debuted in June 1997, sharing the W202 C-Class platform but wearing W210 E-Class styling - and launching a new market niche for Mercedes-Benz .
Key Changes
CLK launched in coupé form (C208) as E-Class coupé replacement
Three initial engines: 2.0-litre naturally aspirated four-cylinder, 2.0-litre supercharged, 2.3-litre supercharged
CLK 320 V6 (3.2-litre, 218bhp) joined within months of launch
Elegance and Sport trim levels offered
Known For
Elegant pillar-less coupé styling with distinctive E-Class face
M111 supercharged engines offer strong torque but supercharger clutches fail
M112 V6 is one of Mercedes’ most reliable engines of the era
Convertible (A208) launched June 1998
Main Engines
M111.945 - 2.0 petrol (CLK 200, 136hp)
M111.944 - 2.0 supercharged petrol (CLK 200 Kompressor, 192hp)
M111.973 - 2.3 supercharged petrol (CLK 230 Kompressor, 193hp)
M112.940 - 3.2 V6 petrol (CLK 320, 218hp)
Engine Codes Covered
M111.945M111.944M111.973M112.940
Popular Models
Mercedes CLK 200
Mercedes CLK 200 Kompressor
Mercedes CLK 230 Kompressor
Mercedes CLK 320
Common Replacement Enquiries
Mercedes CLK 200 engine replacement
Mercedes CLK 320 engine price
CLK 230 Kompressor rebuilt engine
Get quotes for 1997-1999 Mercedes CLK replacement engines
FAQ
Mercedes Benz CLK Engine ReplacementFrequently Asked Questions
Question 1What is the Mercedes CLK350 balance shaft problem and which engines are affected-
The M272 V6 balance shaft sprocket wears prematurely due to soft metal, causing timing chain slack, fault codes P0016/P0017, and eventual engine failure.
- Affects CLK280 and CLK350 (2005-2007, M272 engines below serial #468933)
- Symptoms: check engine light, rattling from front of engine on startup
- Repair requires specialist disassembly - not a DIY job
- 2007+ facelift engines have hardened sprockets and are safe
Question 2How much does it cost to replace a Mercedes CLK engine in the UK-
Expect £950-£2,500 for a used unit, £1,200-£3,100 for rebuilt, plus £400-£800 for professional fitting. Final cost depends on engine code and damage severity.
- Used CLK engines: £950-£2,500 supply only (mileage varies)
- Rebuilt/reconditioned units: £1,200-£3,100 with 12-month warranty
- M272 V6 and OM642 diesel are the most expensive to source
- Supply & fit packages typically add £400-£800 to engine price
Question 3Is the Mercedes CLK320 CDI OM642 engine reliable- What common problems should I know about-
The OM642 V6 diesel is smooth and torquey but has two well-known weaknesses - oil cooler seal failure and swirl flap linkage breakage - that require significant labour to fix.
- Oil cooler seals leak at 80k-120k miles - requires intake manifold removal
- Swirl flap linkage failure causes loss of power and stumbling below 1800rpm
- No fault codes often stored - diagnosis requires live data monitoring
- Once repaired with upgraded seals, the engine is otherwise robust
Question 4Does the Mercedes CLK200 Kompressor have timing chain problems-
Yes, the M271 1.8-litre Kompressor engine is known for timing chain stretch and camshaft adjuster failure, often causing startup rattle and fault code P0020.
- Timing chain rattle on cold start is the classic warning sign
- Camshaft adjuster magnets fail, leading to poor running and limp mode
- Chain and sprocket replacement costs £1,000-£1,800 at a specialist
- Catch it early - a jumped chain bends valves and destroys the engine
Question 5What is the most reliable engine in the Mercedes CLK range-
The M112 3.2 V6 (pre-2005 CLK320) and M113 V8s (CLK430, CLK500, CLK55 AMG) are widely considered Mercedes' most robust modern engines - the M272 is the one to avoid.
- M112 3.2 V6 - bulletproof, no balance shaft issues, just crankshaft sensors fail
- M113 V8 - robust, valve seal wear is the only common age-related issue
- Avoid early M272 V6 (2005-2007) unless balance shaft recall confirmed
- The 5-cylinder OM612 diesel (CLK270 CDI) is a cult favourite for reliability
Question 6Is it worth replacing the engine in my old Mercedes CLK-
On a CLK worth £2,000-£5,000, specialist engine replacement at £1,500-£2,500 is worthwhile if the body and interior are in excellent condition - but only with a rebuilt unit that fixes the original design flaw.
- CLKs are at "peak undesirability and value" - rock bottom prices
- A clean, low-mileage CLK in good condition is worth saving
- Rebuilt M272 with hardened sprockets costs £1,500-£3,100 supply only
- If the car has rust, electrical issues, or poor bodywork, scrap it
Question 7What causes loss of power on my Mercedes CLK350 with no warning lights-
Common culprits include snapped intake manifold linkage rods (P0521 code), failed camshaft position sensors, or LPG installation issues - not always the balance shaft.
- Plastic intake manifold linkage rods snap - £45 repair kit fixes it
- Generic Chinese ignition coils often fail - fit genuine or quality brands
- Cam sensors fail without storing permanent codes
- Check VIN online to confirm if your engine is in the affected balance shaft range
Question 8How many miles will a Mercedes CLK engine last-
Well-maintained M112 V6 and M113 V8 regularly exceed 150k-200k miles. M272 V6 with balance shaft repaired will also last, but neglected M271 Kompressor units often fail before 100k.
- M112/M113 - 150k-200k+ miles with regular servicing
- M272 - indefinite if balance shaft replaced with hardened sprocket
- OM642 diesel - 150k+ miles but oil cooler seals need doing once
- M271 Kompressor - timing chain failure risk from 60k-100k miles
Question 9What is the Mercedes CLK63 AMG head bolt problem-
Early M156 6.2 V8 engines (pre-2010) have defective head bolts that can snap, allowing coolant into cylinders - catastrophic failure requiring full engine replacement.
- Affects CLK63 AMG (2006-2009) - all pre-facelift M156 engines
- Symptoms: unexplained coolant loss, misfire on cold start, white smoke
- Head bolts can be replaced preventatively without engine removal
- Rebuilt M156 engines come with updated Weistec or OEM head bolts
Question 10What is the best Mercedes CLK engine to buy used-
The 3.0 OM642 diesel (CLK320 CDI) offers the best balance of performance and economy, but check oil cooler seals. For petrol, the later 2007+ CLK350 with M272 balance shaft fix is safest.
- CLK320 CDI (OM642) - 221hp, 45-50mpg, silky V6 torque
- 2007+ facelift CLK350 - balance shaft issue resolved, 272hp
- CLK55 AMG (M113 V8) - bulletproof, values rising, future classic
- Avoid 2005-2007 M272 engines without verified recall history
Why Choose Us
Why UK Mercedes Benz CLK Owners Trust EngineMarket
Join thousands of UK drivers who compare Mercedes Benz CLK engine prices through our network of trusted specialists - every rebuilt and reconditioned unit backed by a minimum 12-month unlimited mileage warranty and nationwide delivery.
Trusted Mercedes Benz CLK Engine Suppliers
Every garage and engine rebuilder in our network is vetted, rated, and reviewed by real Mercedes Benz CLK owners.
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UK Engine Replacement Services for Mercedes Benz CLK
Covering every variant from CLK200 Kompressor to CLK63 AMG Black Series, with supply-only or full supply & fit available nationwide.
Find the best Mercedes Benz CLK engine replacement near you
Compare engine prices for Mercedes Benz CLK in the UK and get competitive quotes from garages near you.
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