Bosch 66821 direct injection high pressure fuel pump for the 2016-2018 Mercedes-Benz GLE350 V6 3.5L and other vehicles raises fuel pressure for a gasoline direct injection system. The pump is built on the same production lines as Bosch OE fuel pumps and is function tested at the end of the line.
- Steel pump with a metal housing
- Integrated pressure limiter valve
- Integrated pressure damper capable of variable feed pressure
- On-demand quantity control to minimize fuel consumption
- Compact, light-weight design
Quick facts
- Part: Bosch 66821 direct injection high pressure fuel pump
- Fits: 2016-2018 Mercedes-Benz GLE350 V6 3.5L and other vehicles
- Material: Steel
- Condition: New
Hard starting, rough running or a drop in power can mean the pump is wearing out. These signs alone do not prove the pump is at fault, since a clogged fuel filter can cause them too.
Fits
This pump is listed for a wide range of Mercedes-Benz models, including the 2012-2016 Mercedes-Benz E350 V6 3.5L and the 2012-2016 Mercedes-Benz SLK350 V6 3.5L. If your car is not named here, look it up in the "Vehicles it fits" section.
Specifications
Fit and size
- Quantity per vehicle: 1
- Outlet fitting thread size: M16 x 1.5
- Outlet size: 16 mm
- Outside diameter: 16 mm
- Inside diameter: 6 mm
- Inlet size: 8 mm
- Housing width: 51 mm
- Voltage: 12 V
- Terminals: 2
Build and materials
- Pump type: mechanical, piston
- Material: Steel
- Housing material: Metal
- Seal type: o-ring
- Seal material: synthetic or NBR rubber
- Fuel type: gas
- Condition: New
In the box
One direct injection high pressure fuel pump with its o-ring seal. This listing is one pump, and the vehicle takes one. A lock ring and a wire harness are not included, so plan on a new lock ring.
Installation notes
- Designed for plug-and-play installation.
- Made in-house, never sourced or reverse-engineered, as a direct-fit replacement.
Interchange: 2760700601
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is the Bosch 66821 pump right for a 2012-2016 Mercedes-Benz E350 V6 3.5L?
Yes. Bosch 66821 is listed for the 2012-2016 Mercedes-Benz E350 V6 3.5L, and that engine takes one pump.
Does the Bosch 66821 fuel pump come with an o-ring seal?
Yes. Bosch 66821 comes with an o-ring seal. A lock ring and a wire harness are not included.
What thread does the outlet fitting on this high pressure fuel pump use?
The outlet fitting thread is M16 x 1.5, and the outlet size is 16 mm. The inlet size is 8 mm.
How can I tell if a GDI high pressure fuel pump is wearing out?
Hard starting, hesitation or a loss of power can mean the pump is wearing out. A shop can test fuel pressure to see.
Is the Bosch 66821 plug-and-play to install?
Yes. Bosch designs the 66821 for plug-and-play installation, and it is made in-house as a direct-fit replacement.
