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Description
BMW Misfire N54 Engine MSD80 DME Repair & MOSFET Upgrade Kit - Fix Engine FaultsRepair and improvement kit for BMW Siemens DME MSD80 MSD81 injection computer: OEM IRF W644B transistors. This ECU is used in many BMW 2006 2013 vehicles with N54 or N54T 6 cylinder turbo engine. The DME MSD80 MSD81 computer is fitted to the following vehicles: BMW 135i 2007 2013 (E82) BMW 335i 2007 2008 (E90) BMW 335xi 2007 2008 (E91) BMW 335i 2007 2010 (E92) BMW 335i 2007 2010 (E93) BMW 535i and 535xi (E60) 2009 2010 BMW Z4 35i 2009 2016 (E89)
Repair and improvement kit for BMW Siemens DME MSD80 / MSD81 injection computer: OEM IRF W644B transistors.
This ECU is used in many BMW 2006-2013 vehicles with N54 or N54T 6 cylinder turbo engine.
The DME MSD80 / MSD81 computer is fitted to the following vehicles:
BMW 135i 2007-2013 (E82)
BMW 335i 2007-2008 (E90)
BMW 335xi 2007-2008 (E91)
BMW 335i 2007-2010 (E92)
BMW 335i 2007-2010 (E93)
BMW 535i and 535xi (E60) 2009-2010
BMW Z4 35i 2009-2016 (E89)
Typical fault symptoms:
Supply problem of one or more injectors
Intermittent starting problem
Engine runs on certain cylinders only
Vehicle does not start
Fault codes indicated by the diagnostic case:
30BA - DME Digital Motor Electronics, Internal Fault
30BB - DME Digital Motor Electronics, Internal Fault
29D0 - Cylinder 4 Misfire
29D1 - Cylinder 5 Misfire
29D2 - Cylinder 6 Misfire
29CD - Cylinder 1 Misfire
29CE - Cylinder 2 Misfire
29CF - Cylinder 3 Misfire
29CC - Multiple cylinder misfire
29D9 - Misfire with low fuel level
All of these symptoms most likely mean that the MOSFET transistors located in your vehicle's injection computer module are faulty.
Using our repair kit, you can permanently repair the Siemens MSD80 / MSD81 injection computer yourself at a lower cost.
The Siemens DME MSD80 / MSD81 BMW ECU repair kit includes:
OEM IRF W644B transistors
Please note that all 6 original W644B transistors, even if they are in good condition, must be replaced with new transistors.
Part Numbers: 7546141 7550014 7565859 7565860 7567229 7567232 7567491 7567492 7567542 7567543 7568370 7568371 7568842 7568843 7569978 7569979 7571468 7571469 7572063 7572064 7572067 7572068 7573796 7573797 7573863 7573864 7574534 7574535 7575875 7575876 7576719 7576720 7576721 7576722 7578020 7578021 7578441 7578442 7583332 7583333 7586938 7586939 7586940 7586954 7588620 7588621 7594305 7594306 7595235 7595236 7596017 7596018 7611396 7611397
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4.7 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Perfect. Sturdy. Super easy to assemble.
Size: 6 tier, Color: Black Brush Silver
I don’t rate a lot of items but I’m in love with this one. I just received it today. It was packaged incredibly well, took 15 min or less to put together and looks amazing!!! I’m tempted to order another one for another room in the house. It’s sturdy, well-made and I can’t stress how easy it was to assemble. Great product, highly recommend. (The owners even sent a hand-written note thanking me for ordering - what a nice touch!)
Edit: ordered a second one after living first one so much
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2020
★★★★★ 5
Perfect industrial look bookshelf
Size: 6 tier, Color: Black Brush Silver, Size: 6 tier, Color: Black Brush Silver
Surprised how good the quality was for the price. Metal is real metal and wood seems to be real wood. Pretty much twist on and off each section to put together. No question it is a very sturdy piece of furniture. Bought it over other bookshelves because the reviews said it was solid … and indeed it did turn out to be very solid. I’m very pleased and would recommend. Now I just need some things to fill the shelves.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2022
★★★★★ 5
Looks great & saves space
Color: Rustic Brown and Black, Color: Rustic Brown and Black
I couldn't be happier with the look and the space it's saving me. It came very well packaged, even with corner guards on the wood shelfs. It was very easy to assemble and attach to the end of my pantry in the kitchen. That space was just going to waste. The ladder shelf fit perfect and looks great. I love the color and texture of the wood grain, it really goes well with the black metal rail. It will be a little wobbly until you get it screwed down to the wall but after that, it's good and sturdy. The instructions were easy enough to read but I still found a couple of parts I didn't use and wondered what they were for? The parts do come numbered but only on the packaging? Not on the part itself which would have been more helpful to some extent. So just keep it all together with it's packaging and you'll have no problems. Very happy with purchase.
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Reviewed in the United States on July 31, 2023
★★★★★ 5
Nice and sleek
Color: Rustic Brown and Black
I’m really happy with the bookshelves overall, I only wish they had taller ones available. It was very quick and easy to put together and they have held up well so far. They look great for the price and I especially like that they have a small footprint when it comes to how much room they take up.
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Reviewed in the United States on May 5, 2024
★★★★★ 5
Nice, sturdy and easy to assemble.
Color: Rustic Brown and Black, Color: Rustic Brown and Black
Worked great for our small apartment. We needed something to fit over our heater baseboard and this worked! However, we had to swap the bottoms and top side rods to fit this way, meaning instead of using the 6” rods at the bottom we put them on top and used the 12” at bottom to clear over the baseboards. Easy to assemble and matched our other larger wall shelf perfectly.
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Reviewed in the United States on November 22, 2025
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