Mercedes Benz E400 Serpentine Belt
Factory serpentine belt specifications for the Mercedes Benz E400.
Last updated: 2026-11-09 • Reading time: 8 min • By AllOEMManuals Editorial Team
Quick Answer
2018 Mercedes Benz E400: REMOVE/INSTALL POLY-V BELT REMOVE/INSTALL REFRIGERANT COMPRESSOR POLY-V-BELT REMOVE/INSTALL POLY V-BELT OF ALTERNATOR.
| Generation | Years | Top spec |
|---|---|---|
| 2018 | 2018 | REMOVE/INSTALL POLY-V BELT REMOVE/INSTALL REFRIGERANT COMPRESSOR POLY-V-BELT REMOVE/INSTALL POLY V-BELT OF ALTERNATOR |
| 2015-2017 | 2015-2017 | REMOVE/INSTALL BELT DRIVE COMPONENTS |
This vehicle's factory manual
Mercedes Benz E400: choose your year, then confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Mercedes Benz E400 maintenance schedule
Check serpentine belt information for your Mercedes Benz E400
2018 Mercedes Benz E400: REMOVE/INSTALL POLY-V BELT REMOVE/INSTALL REFRIGERANT COMPRESSOR POLY-V-BELT REMOVE/INSTALL POLY V-BELT OF ALTERNATOR.
Belt routing and length change with engine code, accessory package, and tensioner layout. Do not order parts off a generic diagram. Once the spec is confirmed, use the supplies and purchase links below to build the full one-trip shopping list before you start the repair.
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Choose your year, model and configuration before using a specification or ordering parts. The example source may describe a different vehicle or trim.
2018
2015-2017
Parts and supplies
These links search for related products. Check your year, engine, specification, and fitment with the seller before ordering.
Mercedes Benz E400 Serpentine Belt
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Serpentine Belt — Manual's Parts List
Belt, tensioner, and the tool to do it right.
- 1Serpentine BeltShop →
Exact length and rib count for your engine
- 2Belt TensionerShop →
Inspect and replace if the service procedure calls for it
- 3Idler PulleyShop →
If it wobbles or squeaks, replace it while you are in there
- 4Breaker Bar (1/2")Shop →
Use the tool specified in the service procedure
- 5Belt Routing DiagramShop →
Take a photo before you remove the old belt
Get everything at once
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One-Trip Shopping List
Recommended supplies and tools for this job, grouped so you can buy everything before the repair starts.
Exact Serpentine Belt
Match engine-specific length and rib count for the cleanest fit.
Belt Tensioner
Replace weak spring-loaded tensioners that cause squeal and slip.
Idler Pulley
Quiet bearing support when the belt is off anyway.
Pulley Puller Set
Useful for stubborn idler and tensioner pulley swaps.
Breaker Bar
Makes tensioner release easier in tight engine bays.
Shop Towels
Keep the accessory drive and your hands clean during inspection.
Project Essentials
Basic tool sets, gloves, and cleaning supplies for your Mercedes Benz E400 so the job is ready when the parts arrive.
Frequently Asked Questions
- What serpentine belt does a Mercedes Benz E400 use?
- 2018 Mercedes Benz E400: REMOVE/INSTALL POLY-V BELT REMOVE/INSTALL REFRIGERANT COMPRESSOR POLY-V-BELT REMOVE/INSTALL POLY V-BELT OF ALTERNATOR.
- How do I know if my Mercedes Benz E400 serpentine belt is bad?
- Common signs include squealing on startup (especially when cold), visible cracks or fraying on the ribbed side, power steering or A/C failure, and battery warning lights. The factory manual includes inspection criteria and replacement intervals.
Find your service manual
Select your vehicle and check the available manual sections for your exact configuration.
Author & Review
Published by AllOEMManuals, founded by Lyndon Bedford, an automotive technician with 20 years of experience. He owned and operated a mechanic shop in Hurst, Texas from 2014 to 2022 and continues hands-on repair work.
Content may combine manual references, general repair templates, and AI-assisted drafting. Confirm the source, vehicle configuration, and applicability before working. Report corrections through our contact page.
Last updated: 2026-11-09