Fuel Pump replacement

[old///MFanatic]

Since these pumps are not cheap, maybe I will look into replace the pump motor brushes that worn and caused the problem.

I would not waste time doing that. Brushes are only one small subset of the reasons for a failed pump. Taken a few apart.
True pumps aren't the least expensive working component on the car but they do work the whole time engine is running and Very important. It’s worth buying an OE pump (if it’s actually failed). Most likely the last one you’ll ever buy for your car. And M’s cost to own.

[RedM3/4]

I don't have an issue, but curious, what other failure modes have you seen? Most DC motors are 1. brushes 2. commutators (usually due to brushes let go too long 3. bearings.

ADS

I would not waste time doing that. Brushes are only one small subset of the reasons for a failed pump. Taken a few apart.
True pumps aren't the least expensive working component on the car but they do work the whole time engine is running and Very important. It’s worth buying an OE pump (if it’s actually failed). Most likely the last one you’ll ever buy for your car. And M’s cost to own.

[cudzich09]

Cheapest OEM I found, $366

https://www.rockauto.com/en/parts/delphi,FG1659,fuel+pump+&+housing+assembly,10147

[sapote]

I would not waste time doing that. Brushes are only one small subset of the reasons for a failed pump. Taken a few apart.
True pumps aren't the least expensive working component on the car but they do work the whole time engine is running and Very important. It’s worth buying an OE pump (if it’s actually failed). Most likely the last one you’ll ever buy for your car. And M’s cost to own.

I'm interested of what you found after opened up a few bad ones. It seems to me the parts that worn from running all the time are brushes, commutator, bearings, as another member said. It's hard for the one-way check valve to be the weak link in the pump. These pumps are not $100 or less, so for me fixing a motor is worth it.

[Randall921]

Anyone try the Hella pump that Bimmerworld sells?

https://www.bimmerworld.com/Hella-Fuel-Pump-Assembly-E46-M3.html

It's only $100

[L0okitzRaj]

I run the radium kit with the walbro 255, done it on a previous e46m and my current. I believe they are great, and pumps are cheap if you need to replace. ~$70

[c watson]

Anyone try the Hella pump that Bimmerworld sells?

https://www.bimmerworld.com/Hella-Fuel-Pump-Assembly-E46-M3.html

It's only $100

if bimmerworld sells it then im sure it’s legit. Comes with a 2 year warranty at $99. I would try that one.

[jdamore44]

Is Delphi the OE?

[Slideways]

Is Delphi the OE?

VDO should be OE

[old///MFanatic]

Is Delphi the OE?

As memtioned, it’s VDO.

[jdamore44]

As memtioned, it’s VDO.

Thank you, looks like you can't find a VDO version, so BMW stamped it is :/ ugh $450.00 is steeep.

[E46 M3]

You know the platform is old when you can't get non BMW stamped injectors and fuel pumps anymore. But hey at least we have 10,000 CSL trunk and bumper options instead

[old///MFanatic]

You know the platform is old when you can't get non BMW stamped injectors and fuel pumps anymore. But hey at least we have 10,000 CSL trunk and bumper options instead

Don’t recall ever being able to buy direct VDO branded fuel pump for the M3. The E46 non-Ms yes, but not the FP. Same BMW exclusivity as OE supplier for M3 water pumps.

[E46 M3]

Don’t recall ever being able to buy direct VDO branded fuel pump for the M3. The E46 non-Ms yes, but not the FP. Same BMW exclusivity as OE supplier for M3 water pumps.

You could a few years ago, I still have the links somewhere.

[old///MFanatic]

You could a few years ago, I still have the links somewhere.

I am very curious to see those. Can’t imagine it’s a AUS thing. Since 2013 all my records show only OE “VDO”was from dealer. Prices then were my dealership $325 w/discount. Next lowest was TheBMWPartStore @$283 and BMWPartsSource@$284.