JB4 Performance Tuner
JB4 Plug & Play Harness Upgrade

 Juice Boc JB3 Plug & Play Harness
Quick Plug & Play Install for the JB4!

Upgrade your JB4 professional / pinout harness to a plug and play harness with this upgrade kit. Includes complete new harness including power wire adapter ready to mate to your JB4 board. A $150 core charge is added which will be refunded upon return of your original pin out harness to the address on our contact us page. Please note this harness upgrade is not compatible with the JB3 board.

BMS JB4 Plug & Play Harness Upgrade

Only $180.00 + $150.00 core charge
Not Available in California. Worldwide Shipping Available.
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BMW LED angel eyes
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BMW Jack Pad Adapter BMW led flashlight BMW Jack Pad Adapter LED angel eyes BMW Clutch Stop
BMS Cowl Filters LED Angel Eyes BMW Wheel Spacers LED Trunk Light Mini LED Flashlight JB+ BMW Tuner
LED angel eyes BMW Paddle Shift Retrofit LED BMW Trunk Light BMW led flashlight JB+ BMW Performance Tuners
BMW Performance Tunes:
N54 JB4
N54 JB+ Quick Install
N55 Stage 1
E Series N55 JB4
F Series N55 JB4
N20 Stage 1
N20 JB4
N63/N63tu Stage 1
2015+ M3/M4 Stage1
2015+ M3/M4 S55 JB4 BETA
M5/M6 S63tu Stage 1
BMS Power Box (PBX)
JB Diesel (JBD)
BMW Performance Intakes:
BMS Red Dual Cone Intake
BMS White Dual Cone Intake
BMS N55 BMW Performance Intake
BMW Drop-In Air Filter Replacements
Filter Cleaning & Oil Kit
BMW Oil Catch Can
AA BMW 135i / 335i Intercooler
cp-e™ BMW 135i / 335i Intercooler
F Chassis BMW Intercooler
cp-e BMW 135i 335i Blow Off Valve Kit
BMS N54 Chargepipe
BMS N55 Chargepipe
F Chassis N55 Chargepipe
N20 N26 Chargepipe
BMW Interior:
Add OEM BMW Paddle Shifters
Short Shift Kit for BMW
Billet Shift Rod
F30 F31 F32 LED Glove Box Light
LED Courtesy / Footwell Lights
LED BMW Trunk Light Upgrade
Downshift Blocker
Short Throw Clutch Stop
12V Power Cable for GoPro Hero 3
LED 12v Flashlight
JB4 Logo Key Chain
BMW Exterior:
BMW Wheel Spacers
Wheel locks for Spacers
Wheel Locks for BMW
Titanium BMW Lug Bolts
LUX Color Adjustable LED Angel Eyes
LUX H8 160 7000K LED Angel Eyes
LUX 2005-2008 E90 Sedan Angel Eyes
White H8 Angel Eyes Upgrade
BMW Wheel Pin Tool
LED License Plate Lights
LED Courtesy Lights
BMW Tow Plate License Plate Mount
BMW Metal Jack Pad Adapter
Protective Wheel Saver Socket
Magnetic Spark Plug Socket
BMS Stickers
BMW Upgrades:
N54 JB4 Upgrades
N55 JB4 Upgrades
N20/N26 JB4 Upgrades
N63 JB4 Upgrades
BMS DATA Cable & 3' Extension Cable
Bavarian Technic BMW Scanner
OBDII CAN Module for F Series
N54 Spark Plugs
BMW Methanol Injection
Meth Tank Upgrades
Magnetic Spark Plug Socket
BMS N54 Methanol Elbow
Methanol Injectors
Stainless Steel Brake Line Upgrade
Sport Oil Cooler Valve
Rob Beck Replacement PCV Valve
BMS Short Throw Shifter
Billet Shift Rod
Replacement Downpipe Gaskets/Hardware
BMW Speed Delimiter (SLD)
Short Throw Clutch Stop
Modified BMW Clutch Valve
BMW Oil Catch Can
LED 12v Flashlight
Mini Cooper:
JB+ Mini Cooper Tune
MINI B48 Stage1 BETA
Bavarian Technic BMW Scanner
R55 R56 R57 R58 R59 Wheel Spacers
Mini Cooper Wheel Spacers
Mini Cooper Floor Jack Pad
Countryman Paceman Floor Jack Pad
Mini Cooper Wheel Locks & Keys
Mini Cooper Wheel Spacer Locks
Mini Tow Hook GoPro Camera Mount
BMS Wheel Pin Tool
Magnetic Spark Plug Socket
Clutch Stop
Wheel Socket
LED 12v Flashlight
Mercedes Benz:
2015 W205 C200 C250 C300 Stage1
2015 W205 C400 Stage1
C250 JB+ Tuner
C350 JBD Tuner
C250 Intake
Mercedes Floor Jack Pad
Mercedes Wheel Spacers
Protective Wheel Socket
Air Filter Cleaning Kit
Rechargeable LED Flashlight
12V Power Cable for GoPro Hero 3
JB VW Stage 1 Beta EA888 Gen3
VW Clutch Stop
VW Rechargable LED Flashlight
GoPro Hero 3 12V Power Cord
17mm Protective Wheel Socket
BMW Gallery
Installation Guides
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BMW Chassis Codes
Mini Cooper Chassis Codes
California Emissions Info
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