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Mercedes Benz CLK Engine ReplacementCompare Prices & Save
Get quotes today from trusted UK Mercedes Benz CLK engine specialists. Compare prices on reconditioned, rebuilt and used engines - supply & fit available nationwide.
CLK Diesel Engines - from £1,100 to £3,800
-> Rebuilt units from £1,100 · Common codes: OM642, OM646, OM612, OM611
CLK Petrol Engines - from £950 to £3,500
-> Rebuilt units from £1,200 · Common codes: M272, M112, M271, M111
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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3 Simple Stepsto Finding the Best Mercedes Benz CLK Replacement Engine
Get Instant Quotes from Mercedes - Benz Engine Specialists Across the UK - 100% free, no obligation. Most replacements completed within 3-5 days.
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Live UK Engine Market Data
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
- Mercedes Benz CLK (C208) CLK55 AMG1999-2002£2,800-£5,500Piston ring wearM113Petrol 5.4L
- Mercedes Benz CLK (C209) CLK200 Kompressor2002-2009£1,000-£2,100Camshaft adjuster failureM271Petrol 1.8L
- Mercedes Benz CLK (C209) CLK220 CDI2005-2010£1,200-£2,500Injector seal leakOM646Diesel 2.1L
- Mercedes Benz CLK (C209) CLK270 CDI2002-2005£1,300-£2,600Turbo bearing failureOM612Diesel 2.7L
- Mercedes Benz CLK (C209) CLK2402002-2005£1,150-£2,200Balance shaft wearM112Petrol 2.6L
- Mercedes Benz CLK (C209) CLK2802005-2009£1,400-£2,800Timing chain stretchM272Petrol 3.0L
- Mercedes Benz CLK (C209) CLK3202002-2005£1,250-£2,500Crankshaft sensor failureM112Petrol 3.2L
- Mercedes Benz CLK (C209) CLK320 CDI2005-2009£1,600-£3,200Oil cooler seal leakOM642Diesel 3.0L
- Mercedes Benz CLK (C209) CLK3502005-2009£1,500-£3,100Balance shaft gear failureM272Petrol 3.5L
- Mercedes Benz CLK (C209) CLK5002002-2009£1,800-£3,800Airmatic compressor failureM113Petrol 5.0L
- Mercedes Benz CLK (C209) CLK55 AMG2002-2006£3,000-£6,000Supercharger clutch failureM113Petrol 5.4L
- Mercedes Benz CLK (C209) CLK63 AMG2006-2009£4,500-£9,000Head bolt failureM156Petrol 6.2L
- Mercedes Benz CLK (C208) CLK200 Kompressor1997-2002£950-£1,900Supercharger failureM111Petrol 2.0L
- Mercedes Benz CLK (C208) CLK230 Kompressor1997-2002£1,100-£2,100Timing chain rattleM111Petrol 2.3L
- Mercedes Benz CLK (C208) CLK3201997-2002£1,200-£2,400Crankshaft position sensorM112Petrol 3.2L
- Mercedes Benz CLK (C208) CLK4301998-2002£1,600-£3,200Valve seal wearM113Petrol 4.3L
Last updated: 22 May, 14:59
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Models We Cover
Mercedes Benz CLK Engine ReplacementAll Variants Covered
From the economical CLK220 CDI to the high-performance CLK63 AMG Black Series, our network of UK Mercedes Benz CLK engine specialists helps you compare rebuilt, reconditioned and used engine prices. Typical price range for a rebuilt unit with 12-month warranty: £950-£9,000 - supply & fit available nationwide.
Core Diesel Range
Specs150hp
Years2005-2010
Rebuilt£1,200-£2,500
Core Petrol Range (Kompressor & V6)
Performance & Specialist Range (V8 & AMG)
Variant Directory
All Mercedes Benz CLK Variants - Engine Replacement Coverage
A full alphabetical listing of every Mercedes Benz CLK trim covered by our network. All entries link to a dedicated variant page, where prices are further broken down by engine code, model year, and condition type. Click a live link to compare quotes.
Diesel Variants
CLK220 CDICLK270 CDICLK320 CDI
Petrol Variants
CLK200 KompressorCLK230 KompressorCLK240CLK280CLK320CLK350CLK430CLK500CLK55 AMGCLK63 AMGCLK63 AMG Black Series
Performance Variants
CLK55 AMGCLK63 AMGCLK63 AMG Black Series
Engine Codes
Mercedes 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.
Petrol Engines
Extracted from detailed petrol and performance 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
What It Costs to Fix & When Replacement Makes Sense
Every rebuilt engine includes a minimum 12-month unlimited mileage warranty.
1. Mercedes CLK350 / CLK280 M272 Balance Shaft Failure
The Single Biggest V6 Problem
Affected Models
Mercedes CLK280, CLK350 (C209 2005-2009, M272 E30 & M272 E35 engines)
Typical Failure Mileage
60,000 - 100,000 miles
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
Affected Models
Mercedes CLK280, CLK350 (C209 2005-2009, M272 E30 & M272 E35 engines)
Typical Failure Mileage
60,000 - 100,000 miles
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 .
Full Timing Chain & Balance Shaft Replacement - Complete repair
Dealer
£3,500 - £5,000
Specialist
£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
Dealer
£6,000 - £9,000
Specialist
£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 →Disclaimer: All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EngineMarket's UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific Mercedes CLK and engine code. Every engine supplied through EngineMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier.
12-Month Warranty
Upgraded Components
Nationwide UK Delivery
Save vs Main Dealer Price
Replacement Engine Options
Mercedes Benz CLK Engine TypesOptions, Costs & What to Expect
Every engine type is available through our UK network with typical price ranges based on your CLK variant, engine code and budget.
All engine types include a minimum 12‑month unlimited mileage warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific Mercedes Benz CLK within hours.
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.
Mercedes Benz CLK Diesel Engine Sizes
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
Watch for these known weak 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.
Mercedes Benz CLK Diesel Engines
Mercedes Benz CLK Diesel Engines
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 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 Models (UK)
CLK220 CDI
CLK270 CDI
CLK320 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
Year Finder
Not sure which year your Mercedes Benz CLK was built?
Not sure which year your Mercedes CLK 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 CLK specialists.
FAQ
Mercedes Benz CLK Engine ReplacementFrequently Asked Questions
Question 1
What 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.
Key points
- • 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 2
How 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.
Key points
- • 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 3
Is 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.
Key points
- • 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 4
Does 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.
Key points
- • 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 5
What 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.
Key points
- • 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 6
Is 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.
Key points
- • 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 7
What 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.
Key points
- • 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 8
How 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.
Key points
- • 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 9
What 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.
Key points
- • 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 10
What 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.
Key points
- • 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.
Compare Mercedes Benz CLK Engine Replacement Companies
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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.
Compare Mercedes Benz CLK engine prices with vetted UK specialists
Compare engine prices for Mercedes Benz CLK in the UK and get competitive quotes from garages near you.
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