Mercedes-Benz W221 M272 A/C Compressor 7SEU17C 447260-2956 - Used Original Parts
RM 650
Condition: Used (Original)At a Glance
- Mercedes-Benz W221 M272 A/C Compressor 7SEU17C 447260-2956 - Used Original Parts
- Part number: 447260-2956 / 7SEU17C / 12N00776
- Fits: Mercedes-Benz S-Class W221 · confirm by chassis number before ordering
- Used Original · tested working
- RM 650 · final quote via WhatsApp
- M.S. Motor · Kuala Lumpur, Malaysia · ready stock
Diagnosis and Common Symptoms
A failing Denso 7SEU17C compressor on the M272 V6 platform typically announces itself well before total failure. Watch for intermittent A/C cutout with THERMIC or "Check A/C System" messages on the instrument cluster, especially after long idle in Malaysian traffic. A worn internal clutch bearing produces a distinct metallic squeal or grinding noise on startup that changes pitch with engine RPM. Refrigerant pressure sensor faults (often stored as low-side or high-side pressure implausible codes) frequently trace back to internal compressor wear rather than the sensor itself. Some owners report the compressor clutch engaging but the cabin blowing warm air intermittently - a sign of internal valve plate or swash plate wear inside the 7SEU17C unit. Left unaddressed, a failing compressor can shed metal debris into the A/C loop, contaminating the condenser, expansion valve, and evaporator, turning a single-part fix into a full system flush.
Introduction
This listing is for a Genuine Used Denso 7SEU17C A/C compressor, part number 447260-2956, pulled from a Mercedes-Benz W221 fitted with the M272 engine. Every unit in our inventory is Tested for clutch engagement, shaft rotation, and internal compression before it goes on the shelf, so you are not gambling on an unknown take-off part. Sourcing a Genuine Used compressor rather than an aftermarket reproduction preserves the correct refrigerant flow characteristics and mounting geometry the M272 platform was engineered around. For W221 owners in Malaysia looking to restore ice-cold A/C without paying luxury-brand new prices, this is a straightforward, tested replacement.
Product Details
- Brand: Denso
- Model Compatibility: Mercedes-Benz W221 (S-Class) with M272 V6 engine
- Part Name: A/C Compressor
- Part Number: 447260-2956
- Compressor Type: 7SEU17C
- Condition: Genuine Used (Tested Working)
- Notes: Tested for clutch engagement, pulley rotation smoothness, and internal seal integrity prior to listing. Recommend replacing the receiver drier and flushing the A/C loop during installation, and verifying refrigerant oil level matches Denso 7SEU17C specification before recharge.
Frequently Asked Questions
Does the Denso 7SEU17C compressor on the W221 M272 need any coding or adaptation after replacement?
No coding is required. The compressor is a mechanical/refrigerant component controlled by the A/C clutch relay and pressure sensors, so once it is physically installed, evacuated, and recharged, the system operates without any module programming.
How do I confirm this compressor fits my specific W221?
Match the part number 447260-2956 stamped on the compressor housing against your original unit or your parts catalogue reference for the M272 engine code. The W221 was also fitted with the M273 V8 in other trims, which uses a different compressor, so always verify the part number rather than relying on chassis code alone.
What symptoms indicate the compressor is failing before total breakdown?
Early signs include a grinding or squealing noise from the clutch bearing on cold start, intermittent A/C cutout with a dashboard climate warning, and A/C pressure sensor fault codes that do not resolve after sensor replacement, pointing to internal wear in the 7SEU17C valve plate.
Why choose a Genuine Used compressor instead of a new aftermarket unit for the M272?
A Genuine Used Denso unit retains the original manufacturer tolerances and refrigerant oil compatibility that aftermarket reproductions often do not match precisely. Given that A/C compressors typically last well over 150,000 km when not abused, a tested used unit offers reliable service life at a fraction of the cost of a new Mercedes-Benz replacement part in Malaysia.
Are there any installation gotchas specific to this compressor on the M272?
Yes, the serpentine belt routing and tensioner access on the M272 require the compressor to be aligned correctly with the idler pulley before final torque, and the refrigerant oil charge must be adjusted to account for oil already retained in the used unit to avoid over-filling the system.
Part price does not include installation. Our workshop can install for you, labour is charged separately and confirmed with you before any work starts.
We cannot diagnose your car over WhatsApp or photos. Not sure this part will solve your problem? Come for a workshop check, diagnosis fee RM180. If you proceed with the repair using our parts, the RM180 is offset into the labour charge. If you decide not to repair, only the RM180 applies.
All parts are tested and guaranteed to work. Whether a part solves your car's problem can only be confirmed by diagnosis.
Shipping: from Kuala Lumpur, West Malaysia ~RM50, East Malaysia ~RM80 (estimate, confirm via WhatsApp). Delivery 1-2 working days in secure anti-static packaging.
Warranty: 30-day exchange for control units, engines, gearboxes and other major parts; 14 days for small parts. Claims require proof of installation by a qualified workshop. No warranty for items opened, modified, or damaged by wrong installation.
Prices vary with stock and part condition. Final price via WhatsApp.
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