24 Valve Swap Wiring Harnesses
Wanting The Best and Cleanest way to wire up your M50/M52/S50/S52 Engine harness to your car? Look no more!. Our rewired harnesses have a E30 C101 plug that takes the place of the E36 X20 plug allowing you to directly plug your engine harness into the chassis like it would have been from the factory. No adapters or jumbled wiring everywhere. We can handle square and round C101's from 84-92 E30's
Harness conversions include:
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A re-pinned C101 specifically setup for your car. No guesswork and no risk of possibly frying anything.
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Fully functional cluster from the Check engine light to the MPG gauge.
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No more mystery codes from improperly made harness adapters
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Oil Level sensor wiring is integrated into the harness where applicable.
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Air Conditioning Wiring for the ECU is also integrated and a plug is provided in the glovebox
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Fully Functional ABS
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When you receive your rewired harness every plug and connection is properly labeled eliminating any guesswork with which plug goes where.
Pricing starting at 350 Includes all parts necessary for the conversion including a new C101 plug and pins as well as return shipping. When purchasing you will receive an email with the shipping address of where to send your Engine harness. You will also need to reply with a pin-out of your chassis C101 plug. A simple which color wire is at which pin on your car will ensure the harness is adapted perfectly to your car.
Don't Settle for Junkyard built sketchy adapters that could potentially burn up your cars wiring when you can have it done the way the factory would have done it.
*****Due to rising supply costs, demand, and an increase in quality, weve had to raise our prices******
Our Product:
Competitor's Adapter:
Select Your E30:
1984-1985 Square C101 325e/es 410$Shipping Included
1984-1985 Square C101 318i 400$Shipping Included
1985-1987 Round C101 325e/es 380 $Shipping Included
1987 Round C101 325i/is 375 $Shipping Included
1988-1992 Round C101 325i/is 360$Shipping Included
1990-1992 Round C101 318i/is 350$Shipping Included
1988-1992 Round C101 M3 360$Shipping Included
Rebuilt M50/M52/S50/S52/M20 Cylinder Heads - $450 to $600:
A MMW rebuilt head includes:
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Complete head tear-down and inspection, all tolerances checked
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New valve seals
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Pressure test and decking by machine shop
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M20 heads include new cam seals and excellent condition rocker arms, shafts, and cam
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M20 rocker arms are preadjuststed.
These heads are ready to bolt on as delivered.


Custom Tuning and Chips - Various :
Please Contact us for any of your tuning needs. From OBD1 M50/S50's to OBD2 M52/S52's and S54's. Please let us know how we can help you!
E30 24 Valve Swap Products:
24 Valve Swap Engine Mounts- 70$+ Shipping:
These Engine Mounts are a direct bolt in to allow you to mount your 24 valve engine.

OBD2 Cylinder Head Modified E30 Cluster Temp Sender - $50 + Shipping:
These new temp senders are modified to take the place of the throttle body heater port and allow you to get a accurate temperature reading on your E30 Cluster without any other modifications. Requires the throttle body coolant port on the metal coolant pipe to be sealed off.
E30 318/M3 Wiring Harness Covers - $70 + Shipping:
These harness covers allow you to remove the E36 harness plastic box and complete the clean look in your engine bay. This includes the full 3 piece set. Some trimming of the covers is necessary to clear the OBD1 intake manifold.
E30 318 ECU Mount - $65+ Shipping:
This ECU mounting system allows you to mount the E36 ECU like it would have been from the factory. Includes the 3 necessary brackets and 4 new lock nuts.