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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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4.1 ★★★★★
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Product Reviews
★★★★★ 4
nice but not preschool
Format: Hardcover
nice but not for preschool, perhaps older children to really understand the content
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Award Winning Teaching Book
Format: Hardcover
This story has a lovely story that is a great teaching moment for young children. I enjoyed the illustrations and I find these stories about real life situations of other people in other circumstances other than your own offer great teaching moments for the young readers....Recommend you read it to your young children and it gives you a good opportunity to explain to your children that even those who have much less than you do....but, have love and family are wealthy in their own way....and to express all types of families exist and are all just as important and your individual family is to you. Important that they are getting more books out that offer important lessons about life to young people...to grow their empathy for others...and caring feelings for others from a young age. Recommend
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Reviewed in the United States on March 12, 2021
★★★★★ 5
A great buy
Format: Paperback
Great quality & well bound. Much better quality pages than expected, better than a lot of my trades.
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Reviewed in the United States on January 7, 2026
★★★★★ 5
It's huge
Format: Paperback
It's gorgeous 😍
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Reviewed in the United States on December 14, 2025
★★★★★ 3
Amazing book, very bad shipping.
Format: Paperback, Format: Paperback
This is a wonderful series and I am very happy to finally have a copy. Art and story are phenomenal especially if you like steampunk and fantasy. Even more so if you enjoy eldritch fantasy. That said I bought mine new and it arrived on time.....but looks like the book was sadly damaged from poor packing and very rough transport. Thankfully none of the pages besides the front few were torn. The bent and warped pages might need some saving. The amount of damage does not make it look new, despite purchasing a new copy. The box looked damaged when it arrived as well. With signs of one side being dented like it was tossed. So recommend the book, but watch out for the shipping.
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Reviewed in the United States on April 28, 2026