Fuel filter
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Joined: Mar 2018
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From: Florida
18 AMG GTC and 22 F150 Limited. Past owner 16 Maybach, 17 Brabus Smartcar, 06 Ford E150, and 22 G70
My version of WIS expired so I cannot be sure but since i also owned a S600 I recall the filter is in the fuel tank and not something you attend to till over 100k miles on the car. IF I recall its a remove the tank and replace the PUMP/filter combo.
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Joined: Jun 2003
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From: Aridzona
'15 S550, '10 E350 P1/P2, '02 ML320
Unless it is different for the S600 W222, my S550 W222 fuel filter is accessible from under the passenger side rear seat. For the S550, the filter and pump are a consolidated unit, unlike my previous W221 chassis where the filter was on one side and the pump on the other.
Parts in hand, fuel tank no more than 1/4 full, this job takes less than an hour.
Parts in hand, fuel tank no more than 1/4 full, this job takes less than an hour.
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Joined: Oct 2019
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From: Colorado
G550
Toptier fuel is filtered to 10 microns at the dispensing pump, and in-tank filtering is about the same. So unless you're putting dirty fuel into your tank from gas cans, buying cheap gas or driving around on dusty roads without a gas cap, the fuel filter should not become a maintenance concern.
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Joined: Jun 2003
Posts: 713
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From: Aridzona
'15 S550, '10 E350 P1/P2, '02 ML320
Yes I completely agree with this. However the fuel pump is a maintenance item at 100,000 miles, and so is the gasket for the top of the fuel pump which someday will start leaking.
When the fuel pump stops working the car just won't start, so for me it's preventative maintenance after 100,000 miles that's plenty of pumping for a little plastic fuel pump.
When the fuel pump stops working the car just won't start, so for me it's preventative maintenance after 100,000 miles that's plenty of pumping for a little plastic fuel pump.
Last edited by dlafever; Aug 3, 2025 at 09:30 AM.
Senior Member
Joined: Feb 2025
Posts: 262
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From: Seattle
Currently ‘2015 S550 4matic. Previously 03 E320, ‘06 S430, ‘08 S550 4matic
Yes I completely agree with this. However the fuel pump is a maintenance item at 100,000 miles, and so is the gasket for the top of the fuel pump which someday will start leaking.
When the fuel pump stops working the car just won't start, so for me it's preventative maintenance after 100,000 miles that's plenty of pumping for a little plastic fuel pump.
When the fuel pump stops working the car just won't start, so for me it's preventative maintenance after 100,000 miles that's plenty of pumping for a little plastic fuel pump.
preventative, pro active replacement at 100K makes sense to this old guy. At 77, the cost is inconsequential in the big picture. Peace of mind is a good investment.
Be well
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MBWorld Fanatic!
Joined: Oct 2019
Posts: 5,151
Likes: 1,765
From: Colorado
G550
Yes I completely agree with this. However the fuel pump is a maintenance item at 100,000 miles, and so is the gasket for the top of the fuel pump which someday will start leaking.
When the fuel pump stops working the car just won't start, so for me it's preventative maintenance after 100,000 miles that's plenty of pumping for a little plastic fuel pump.
When the fuel pump stops working the car just won't start, so for me it's preventative maintenance after 100,000 miles that's plenty of pumping for a little plastic fuel pump.
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Super Member
Joined: Jun 2025
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From: USA
The fuel filter on a W222 S600 is part of the fuel pump module inside the tank no separate external filter. Replacement is rare but if needed, it’s around 100,000 miles or if issues arise.
OEM part number: A2224700101 (confirm with your VIN at a dealer or parts site). Requires dropping the tank or accessing via rear seat best left to a specialist.
OEM part number: A2224700101 (confirm with your VIN at a dealer or parts site). Requires dropping the tank or accessing via rear seat best left to a specialist.
