Engines Market

Mercedes CLK 350 Specialists

Mercedes Benz CLK 350 Engine Replacement Compare Prices & Get Quotes

Get quotes today from trusted UK Mercedes Benz CLK 350 engine specialists. Compare prices on reconditioned, rebuilt and used M272 3.5-litre V6 engines - supply & fit available nationwide.

Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
Mercedes Benz CLK 350 Engine
from£1,500 to £3,100
  • Usedfrom £1,200
  • Reconditionedfrom £1,600
  • Common codesM272 E35, M272.960, M272.964
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How it works

3 Simple Steps to Finding the Right Replacement Engine

Clear information first, then the right engine and specialist for your exact vehicle.

Variant History

Mercedes CLK 350 Engine History & Specs at a Glance

The Mercedes CLK 350 arrived with the C209 facelift in 2005, powered by the M272 E35 3.5-litre V6 - the most powerful non-AMG V6 ever fitted to the CLK. Producing 272 hp and 350 Nm of torque, it could sprint from 0-62 mph in just 6.4 seconds, making it the definitive grand tourer of the CLK range.

Mercedes CLK 350
  1. 2005

    M272 E35 launched in CLK 350 (C209/A209), 272 hp, 350 Nm, 7G-TRONIC transmission

  2. 2005

    2007 - Early M272 engines affected by balance shaft sprocket defect

  3. 2007

    Production engine update: balance shaft issue resolved from mid-2007

  4. 2006

    2009 - CLK 350 available in coupé (C209) and cabriolet (A209) body styles

  5. 2010

    CLK production ends; M272 engine continues in other Mercedes models

Every M272 E35 engine fitted to the Mercedes CLK 350 is covered below, with UK rebuilt pricing and known failure points - including the infamous balance shaft issue.

Engine Codes & Pricing

Mercedes CLK 350 Engine Codes Specifications & Replacement Cost

Find your exact engine code, specs and UK replacement cost guide.

M272 E35 — 3.5L V6 Petrol (2005-2009) engine

M272 E35 — 3.5L V6 Petrol (2005-2009)

Power Output
272 hp @ 6,000 rpm
Torque
350 Nm @ 2,400-5,000 rpm
Displacement
3,498 cc
Bore x Stroke
92.9 x 86.0 mm
Compression Ratio
10.7:1
Valve Train
24-valve, 4 valves per cylinder, DOHC with variable camshaft adjustment
Fuel System
Microprocessor-controlled injection with hot-film air-mass sensor
Years Fitted
2005-2009

Can’t find your exact engine code?-> Get quotes for M272 E35 Mercedes CLK 350 engine replacement

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Common Problems

Mercedes CLK 350 Engine Problems Repair Cost vs Replacement

The Mercedes CLK 350 is powered by the M272 3.5-litre V6 - a smooth and powerful engine that defined the CLK's grand touring character. However, early production units (2005-2007) suffer from a well-documented balance shaft sprocket defect that can lead to catastrophic engine failure. Later models are more reliable but can still experience swirl flap linkage failure and crankshaft position sensor issues. Every rebuilt engine supplied through EnginesMarket includes upgraded components designed to address the original failure point - plus a minimum 12-month unlimited mileage warranty.

Common failure points and repair options

Balance Shaft Sprocket Failure

Affected
Mercedes CLK 350 (M272 E35, 2005-2007)
Typical failure mileage
60,000-100,000 miles
Root cause
A manufacturing defect in the balance shaft sprocket - the material is too soft and wears prematurely. As the sprocket teeth wear, the timing chain becomes slack, causing incorrect camshaft timing. All early M272 engines are potentially affected, with engines built after August 2007 considered safe.

Repair options

Repair tierDealer priceSpecialist price
Full Timing Chain & Balance Shaft Replacement£3,500-£5,000£2,000-£3,500
Full Replacement - Rebuilt Engine£5,000-£8,000£3,000-£5,500
Our recommendation
The balance shaft issue is the single most significant problem affecting the CLK 350. If you're buying a pre-2008 CLK 350, check the engine serial number to confirm if it's in the affected range. If you own one and have P0016/P0017 codes, don't delay - specialist repair at £2,000-£2,500 is significantly cheaper than a full engine replacement. For cars with high mileage or other issues, a rebuilt unit with hardened sprockets offers peace of mind.
-> Compare rebuilt M272 Mercedes CLK 350 engine prices

Swirl Flap Linkage Failure

Affected
Mercedes CLK 350 (M272 E35, 2005-2009)
Typical failure mileage
80,000-120,000 miles
Root cause
The plastic linkage rods in the intake manifold swirl flap system break, causing the flaps to stick. This results in loss of power, hesitation below 1,800 rpm, and increased fuel consumption. The engine management light may illuminate with codes related to intake manifold runner control.

Repair options

Repair tierDealer priceSpecialist price
Minor - Swirl Flap Linkage Repair£300-£500£150-£300
Intermediate - Intake Manifold Replacement£800-£1,500£500-£900
Full Replacement - Rebuilt Engine£5,000-£8,000£3,000-£5,500
Our recommendation
Loss of power and hesitation below 1,800 rpm are classic symptoms of swirl flap linkage failure. A £150-£300 repair kit with metal linkage rods is the definitive fix. If the flaps themselves are damaged, a replacement intake manifold at £500-£900 is required. Catch it early - flap debris in the cylinders can cause catastrophic engine damage.
-> Get quotes for M272 swirl flap repair for your Mercedes CLK 350

Crankshaft Position Sensor Failure

Affected
Mercedes CLK 350 (M272 E35, 2005-2009)
Typical failure mileage
80,000-120,000 miles
Root cause
The crankshaft position sensor can fail due to heat cycling, causing internal wiring to break. Symptoms include the engine stalling when hot and difficulty restarting after 5-15 minutes. No fault codes are often stored.

Repair options

Repair tierDealer priceSpecialist price
Minor - Crankshaft Position Sensor Replacement£300-£500£150-£300
Intermediate - Full Engine Electrical Inspection£500-£800£300-£500
Our recommendation
If your CLK 350 stalls when hot and won't restart for 5-15 minutes, start with the crankshaft position sensor - it's a £150-£300 specialist fix. The M272 engine is otherwise robust, and with proper maintenance, can exceed 150,000 miles.
-> Get quotes for M272 crankshaft position sensor replacement for your Mercedes CLK 350

Don't Let Engine Failure Write Off Your Mercedes CLK 350

Engine failure on a CLK 350 doesn't have to mean the end of the car. Whether you're dealing with balance shaft failure, swirl flap linkage issues, or crankshaft position sensor problems, EnginesMarket makes it simple to compare prices from trusted UK Mercedes CLK 350 specialists. Every rebuilt engine includes upgraded components designed to prevent the original failure from recurring, backed by a minimum 12-month unlimited mileage warranty. Compare prices today and get back on the road without the main dealer premium.

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FAQ

Mercedes CLK 350 Engine ReplacementFrequently Asked Questions

Everything Mercedes Benz CLK 350 owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

Why Choose Us

Compare Mercedes CLK 350 Engine Prices Today

Comparing quotes for your Mercedes CLK 350 engine replacement is free, quick and carries no obligation. Enter your registration above to get matched with vetted UK specialists who stock the exact M272 E35 engine for your CLK 350 - whether you need a used unit, a reconditioned engine or a fully rebuilt motor with a 12-month warranty and upgraded balance shaft components. Get back on the road with confidence, without the main dealer premium.

200+200+ CLK 350 engines supplied through our network
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