Timing Chain Kit For Mercedes-Benz M270 & M274 - A2700520500 / A0009933978

High-quality replacement timing chain kit suitable for selected Mercedes-Benz vehicles equipped with the M270 and M274 turbocharged petrol engines.

The timing chain system is responsible for keeping the crankshaft and camshafts correctly synchronized. Worn chains, guides or tensioners can cause rattling noises, timing faults, poor engine performance and, in severe cases, internal engine damage.

This kit is intended for professional engine repair and timing-system replacement where the OEM specification matches the vehicle.

Compatible Engine Families

• Mercedes-Benz M270 1.6 Turbo
• Mercedes-Benz M270 2.0 Turbo
• Mercedes-Benz M274 1.6 Turbo
• Mercedes-Benz M274 2.0 Turbo

OEM Reference Numbers

• A2700520500
• 2700520500
• A0009933978
• 0009933978

Mercedes-Benz M270 Applications

Suitable for selected transverse-engine Mercedes-Benz applications including:

• A160 – 2015 to 2018 – W176
• A180 – 2015 to 2018 – W176
• A200 – 2012 to 2018 – W176
• A220 – 2014 to 2018 – W176
• A250 – 2012 to 2019 – W176
• B160 – 2015 to 2018 – W242 / W246
• B180 – 2011 to 2018 – W242 / W246
• B200 – 2011 to 2018 – W242 / W246
• B220 – 2013 to 2017 – W242 / W246
• B250 – 2013 to 2017 – W242 / W246
• CLA180 – 2013 to 2018 – C117 / X117
• CLA200 – 2013 to 2018 – C117 / X117
• CLA220 – 2015 to 2018 – C117 / X117
• CLA250 – 2013 to 2018 – C117 / X117
• GLA180 – 2015 to 2019 – X156
• GLA200 – 2013 to 2019 – X156
• GLA220 – 2015 to 2018 – X156
• GLA250 – 2013 to 2018 – X156

Mercedes-Benz M274 Applications

Suitable for selected longitudinal-engine Mercedes-Benz applications including:

• C180 CGI – 2009 to 2014 – W204 / C204 / S204
• C180 – 2014 to 2018 – W205 / C205 / S205
• C200 – 2013 to 2018 – W205 / C205 / S205
• C250 – 2014 to 2018 – W205 / C205 / S205
• C300 – 2013 to 2018 – W205 / C205 / S205
• C350e – 2015 to 2018 – W205
• CLS260 – 2015 to 2017 – C218
• E180 – 2017 to 2018 – W213
• E200 – 2013 to 2018 – W213
• E250 – 2013 to 2018 – W213
• E300 – 2016 to 2018 – W213
• GLC200 – 2015 to 2018 – X253 / C253
• GLC250 – 2015 to 2018 – X253 / C253
• GLC300 – 2015 to 2018 – X253 / C253
• GLK200 – 2013 to 2015 – X204
• GLK250 – 2013 to 2015 – X204
• SLC180 – 2016 to 2019 – R172
• SLK200 / SLC200 – 2015 to 2018 – R172
• SLK300 / SLC300 – 2015 to 2018 – R172
• V250 – 2014 to 2018 – W447

Infiniti Applications

Selected Infiniti models using Mercedes-derived M274 engine technology may also be compatible, including:

• Infiniti Q50 – 2016 to 2019
• Infiniti QX30 – 2017 to 2019

Key Features

• Replacement timing chain kit for selected M270 and M274 engines
• Suitable for selected 1.6T and 2.0T petrol applications
• Designed to restore correct engine timing when properly installed
• Suitable for selected Mercedes-Benz and Infiniti models
• Replaces selected Mercedes-Benz OEM timing references
• Ideal for timing-system overhaul and engine repair
• Suitable for professional workshop installation

Common Symptoms of Timing Chain Wear

A worn or stretched timing chain system may cause:

• Rattling noise during cold start
• Timing-related fault codes
• Rough idle
• Reduced engine performance
• Difficult starting
• Check-engine warning light
• Camshaft and crankshaft correlation faults
• Excessive chain slack
• Abnormal mechanical noise from the timing cover area

These symptoms can also be caused by other engine faults, so correct diagnosis is recommended before replacing components.

Important Fitment Information

Mercedes-Benz used multiple timing-system revisions across the M270 and M274 engine families.

A vehicle being listed as an A200, C200, C250, E200 or GLC250 does not automatically confirm compatibility.

Correct fitment should be verified using:

• 17-digit VIN number
• Exact engine code
• OEM number from the original timing components
• Vehicle production date
• Chassis code
• Engine specification

Professional Installation Recommended

Timing-chain replacement is a precision engine repair and should be carried out by a suitably qualified technician.

Correct installation requires:

• Accurate crankshaft and camshaft timing
• Correct use of timing-locking tools
• Correct tensioner installation
• Inspection of chain guides and sprockets
• Correct torque procedures
• Verification of camshaft timing after assembly

Incorrect installation can result in poor engine performance or serious internal engine damage.

Recommended Checks During Installation

The technician should also inspect:

• Camshaft adjusters
• Crankshaft sprocket
• Timing-chain guides
• Chain tensioner
• Camshaft gears
• Oil supply passages
• Engine oil condition
• Timing cover seals and gaskets
• Related timing-system hardware

Any worn or damaged related parts should be replaced where necessary.

Fitment Assistance

Not sure whether this kit fits your vehicle?

Send us your:

VIN Number + Vehicle Model + Engine Code + OEM Part Number

and our team can assist with checking compatibility before purchase.