MSD80 DME MOSFET Upgrade and Repair Kit – N54 Engine (BMW 135i / 335i / 535i)
A direct-fit MOSFET upgrade and repair kit for BMW DME MSD80 units used on N54 engine-equipped models. Replace the commonly failed injector MOSFETs with upgraded components designed for improved durability and reliability.
Features
- ✅ Fits BMW MSD80 DME only
- ✅ Upgraded, tougher MOSFET type to withstand the harsh HV and heat conditions
- ✅ Designed to replace commonly failed injector MOSFETs
- ✅ Upgraded components engineered for greater longevity than OEM parts
- ✅ Ideal for repairing N54 DME failures and preventing repeat issues
- ✅ Trust the Boost MonAdvantages!
Compatible models
- BMW E90, E92, E93
- BMW E82
- BMW E89
- BMW E60, E61
- BMW E71
- Applicable to N54 engines (examples: 135i, 335i, 535i)
Notes
- Intended for use with MSD80 DME units only. Confirm your DME model before ordering.
- Installation requires electronics repair skills (soldering/reflow, ESD precautions) or a qualified technician.
- While upgraded for improved durability, correct installation and handling are important for long-term reliability.
Jj –
After replacing mosfets I got 30ba 1,2,3 Dme internal fault after driving about 100miles on mhd v10 stg2+
Ken –
No contact information for the business!
I ordered and installed as cylinder 1 mosfet blew
2 days later cylinder 6 mosfet blew
Ordered another set hoping to be a defect (will update review when I install the new ones)
Dartagnan Champion –
I see absolutely no problems. Installed into my MSD80 just fine, same shape and size as required. Some other reported issues with them but I’d be willing to chalk it up to installation issues. If you’re not good at soldering maybe have it done somewhere. Life span is yet to be seen, though upon start up they function perfectly at a relatively reasonable price.
Alex Petersen –
Whilst driving my e92 335i heard a loud bang followed by really really bad misfiring. Pulled codes and came back to be 30AB misfires multiple along bank 1. Had a friend solder these in for me and car is now running on all 6 cylinders
chase –
Had the code for 4/5/6 injector dme internal error. pulled the ecu and tested them then ordered these and put them in. 400°C to remove the old ones don’t go hotter. but after you get them in let the ecu cool down. also don’t forget soldering paste. fixed the issue overall and car seems to run a little healthier maybe placebo.
Denver freelance, LLC –
Blew my Mosfets ON BANK 1 from a bad Coil pack, and these did EXACTLY as they were advertised. Back on the road! Thanks Boost Monkey, LOVED THE STICKER AS WELL!!
Daniel –
one of the mosfets explode after one day of the installation
Roberto Arango –
Great upgrade over the cheap factory ones. Work well with the tune on the car
Devon Bingaman –
I actually didn’t order their mosfets I ordered their DME repair service directly from their website and felt I needed to leave them a review because they did a great job and the process was very fast and I’ve had no issues at all with the DME since I got it back. The only reason I’m not giving 5 stars is because the instructions were not very clear where I needed to mail my dme to and it was difficult to contact someone within the company but other than that this is definitely the way to go send it to experts and get the job done right and you won’t need to worry!
chase –
Top of the line
Hash –
Was getting the 4/5/6 injector or ecu failure code, 30BB. Swapped them out with a cheap hot air unit also from here. Car ran great again after it was back in the car. Thanks!