Mercedes-Benz OM471 EGR Cooler — Actros MP4/MP5 Replacement Guide
Mercedes-Benz OM471 EGR cooler guide for Actros MP4/MP5. OE numbers A4701400675, A4711408875, A4711404875. Failure symptoms, fitment, and OEM-specification aftermarket replacement.
Failure Symptoms
- Coolant consumption exceeding 1L per 10,000 km
- White exhaust smoke under acceleration
- DTC P0401/P0402 (EGR flow insufficient/excessive)
- Reduced AdBlue efficiency / increased DEF consumption
- Engine derate or power limitation warning
- Coolant odor in cab HVAC system
- EGR valve actuator fault codes
Fitment
- Mercedes-Benz Actros MP4 OM471 12.8L (2011-2019)
- Mercedes-Benz Actros MP5 OM471 12.8L (2019-2024)
- Mercedes-Benz Arocs OM471 12.8L (2013-2024)
- Mercedes-Benz Antos OM471 12.8L (2012-2024)
- Freightliner Cascadia DD13 (rebadged OM471, 2017+)
OE Cross Reference
Frequently Asked Questions
What are the OE numbers for Mercedes Actros OM471 EGR cooler?
Primary OE numbers vary by production year: A4701400675 (2011-2015 Actros MP4), A4711408875 (2015-2019 updated design), A4711404875 (Euro 6 variant), A4711409875 (2019+ Actros MP5). Cross-reference with your chassis number for exact match.
How often does the OM471 EGR cooler need replacement?
Typical replacement interval is 400,000-700,000 km depending on duty cycle and maintenance. Long-haul highway operation extends life, while urban stop-start and mountain routes accelerate wear. Regular coolant analysis (every 50,000 km) can detect early internal leakage.
What is the difference between A4711408875 and A4711404875?
A4711408875 is the standard Euro 6 EGR cooler for Actros MP4 (2015-2019). A4711404875 is a variant with different mounting bracket configuration for specific chassis codes. Both use the same core design but differ in external mounting geometry. Always verify against your chassis VIN.
Can I use aftermarket EGR cooler on Mercedes Actros under warranty?
Using aftermarket parts does not automatically void your warranty under Magnuson-Moss Warranty Act (US) or Block Exemption Regulation (EU). SUMEC parts are manufactured to OE specifications with parts manufactured to OEM specifications.
What tools are needed for OM471 EGR cooler replacement?
Required tools include: Torx T40/T50 sockets, 13mm/15mm/17mm combination wrenches, coolant pressure tester, new coolant (MB 325.6 spec), replacement gaskets/O-rings, and torque wrench (25-45 Nm range).