A clean, purpose-built ECU mounting solution for BMW E36 engine swaps.
Designed around the M54 swap, this ECU box mounts in the factory E36 ECU location while providing the extra space needed for modern swap harnesses, relays, and wiring. No more cramming electronics into the stock enclosure or leaving wiring exposed—this box simplifies installation and delivers a cleaner, more professional result.
While optimized for the M54, it also works отлично for aftermarket ECUs, making it a versatile upgrade for a wide range of swap and standalone setups.
Why you want it:
Bolts into the OEM E36 ECU/DME location
Extra internal clearance for swap wiring and relays
Optional M54 ECU mount available
Additional ECU mounts and custom wiring port locations available on request
Printed in glass-filled, engineering-grade nylon for strength and heat resistance
Flexible TPU grommets and ECU mount for vibration isolation and durability
Removable cover with a grid or honeycomb design for a modern, functional look
Built for enthusiasts who want a cleaner install, better organization, and fewer compromises when swapping engines into an E36.
Designed and manufactured by Final Form Fabrication.
Built to order: Expect 1-2 weeks before shipping.
Note: When selecting “custom” at checkout please email finalformfab@gmail.com to let us know what ECU you have.
A clean, purpose-built ECU mounting solution for BMW E36 engine swaps.
Designed around the M54 swap, this ECU box mounts in the factory E36 ECU location while providing the extra space needed for modern swap harnesses, relays, and wiring. No more cramming electronics into the stock enclosure or leaving wiring exposed—this box simplifies installation and delivers a cleaner, more professional result.
While optimized for the M54, it also works отлично for aftermarket ECUs, making it a versatile upgrade for a wide range of swap and standalone setups.
Why you want it:
Bolts into the OEM E36 ECU/DME location
Extra internal clearance for swap wiring and relays
Optional M54 ECU mount available
Additional ECU mounts and custom wiring port locations available on request
Printed in glass-filled, engineering-grade nylon for strength and heat resistance
Flexible TPU grommets and ECU mount for vibration isolation and durability
Removable cover with a grid or honeycomb design for a modern, functional look
Built for enthusiasts who want a cleaner install, better organization, and fewer compromises when swapping engines into an E36.
Designed and manufactured by Final Form Fabrication.
Built to order: Expect 1-2 weeks before shipping.
Note: When selecting “custom” at checkout please email finalformfab@gmail.com to let us know what ECU you have.
