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BMW G01 X3 M40i B58 3.0L

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BMW G01 X3 M40i B58 3.0L Performance Fueling Parts

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MHD CAN FlexFuel Analyzer - G-Chassis B58/S58

ES#4690036 - ECA-G-B58-S58-AT - MHD CAN FlexFuel Analyzer - G-Chassis B58/S58 - Enable flex-fuel features on your tuned BMW with this plug and play kit! Compatible with MHD or ECUTEK tunes and works with the stock or TU High Pressure Fuel Pump - MHD Tuning - BMW

Enable flex-fuel features on your tuned BMW with this plug and play kit! Compatible with MHD or ECUTEK tunes and works with the stock or TU High Pressure Fuel Pump affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with an Automatic Transmission only
Gen 1 B58 compatible with MHD or ECUTEK tunes, Gen 2 B58 compatible - Automatic Transmission (Any HPFP)

Brand:
MHD Tuning - Corporate Logo
ES#:
4690036
Mfg#:
ECA-G-B58-S58-AT
In Stock
$490.00 USD
Free Shipping
on orders $49 and up

Motiv ReFlex+

ES#4690160 - RFXF02UI6 - Motiv ReFlex+ - Take your Inline-6 BMW to The Next Level With this all in one Tuning Solution! - Motiv Motorsports - BMW

Take your Inline-6 BMW to The Next Level With this all in one Tuning Solution! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Motiv Motorsports - Corporate Logo
ES#:
4690160
Mfg#:
RFXF02UI6
In Stock
$859.00 USD
Free Shipping
on orders $49 and up

Stage 2.5 Boost-Controlled Water/Meth Injection Kit

ES#2855201 - SN0210 - Stage 2.5 Boost-Controlled Water/Meth Injection Kit - Features a gauge pod controller, which allows for the best control and visibility. 7-color OLED displays boost, percentage of flow, low level, and even faults. - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Features a gauge pod controller, which allows for the best control and visibility. 7-color OLED displays boost, percentage of flow, low level, and even faults. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Gauge Pod controller, for optimum control even from the driver's seat!

Brand:
SnowPerformance - Corporate Logo
ES#:
2855201
Mfg#:
SN0210
In Stock
$583.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Motiv ReFlex+ Control Unit

ES#4810266 - 900.1001 - Motiv ReFlex+ Control Unit - Enables precise control of aftermarket performance components like fuel pumps, meth injection kits, boost controllers, port injection kits - Motiv Motorsports - BMW

Enables precise control of aftermarket performance components like fuel pumps, meth injection kits, boost controllers, port injection kits affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Motiv Motorsports - Corporate Logo
ES#:
4810266
Mfg#:
900.1001
Ships in 7 Business Days
$729.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ReFlex Lite: Advanced Sequential Injector Controller - Inline-6

ES#4810441 - 910.1011 - ReFlex Lite: Advanced Sequential Injector Controller - Inline-6 - Upgrade From Your Outdated Batch-Fire Injector Controller! - Motiv Motorsports - BMW

Upgrade From Your Outdated Batch-Fire Injector Controller! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Motiv Motorsports - Corporate Logo
ES#:
4810441
Mfg#:
910.1011
In Stock
$479.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Motiv ReFlex 0-10 Bar Pressure Sensor

ES#4783203 - 101-0216 - Motiv ReFlex 0-10 Bar Pressure Sensor - Add in a 0-10 Bar Pressure Sensor For Your Motiv ReFlex! - Motiv Motorsports - BMW

Add in a 0-10 Bar Pressure Sensor For Your Motiv ReFlex! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Motiv Motorsports - Corporate Logo
ES#:
4783203
Mfg#:
101-0216
In Stock
$105.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ethanol Content Sensor

ES#4811073 - 100.1037 - Ethanol Content Sensor - Add in A Genuine VDO Ethanol Sensor! - VDO - BMW

Add in A Genuine VDO Ethanol Sensor! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
VDO - Corporate Logo
ES#:
4811073
Mfg#:
100.1037
In Stock
$96.99

This product was last offered at the strikethrough price on
04-17-2026

$94.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Boost Cooler Stage 3 DI ProLine Water/Methanol Injection

ES#4698806 - SP10317PRO - Boost Cooler Stage 3 DI ProLine Water/Methanol Injection - Proven to reduce the air inlet temperature by up to 100 degrees and increase octane by 25points for maximum HP and cooling! 3-liter reservoir, stainless steel braided line, 4AN fittings. - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Proven to reduce the air inlet temperature by up to 100 degrees and increase octane by 25points for maximum HP and cooling! 3-liter reservoir, stainless steel braided line, 4AN fittings. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4698806
Mfg#:
SP10317PRO
In Stock at Vendor
$833.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

DeatschWerks Performance Fuel Injector Set - 950cc

ES#4488474 - 16U-00-0090-6 - DeatschWerks Performance Fuel Injector Set - 950cc - 90lb/hr 950cc per minute set of 6 fuel injectors - DeatschWerks - BMW

90lb/hr 950cc per minute set of 6 fuel injectors affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Custom Applications - Will require additional tuning or modifications. NOT DIRECT DROP IN!

Brand:
DeatschWerks - Corporate Logo
ES#:
4488474
Mfg#:
16U-00-0090-6
Ships in 7 Business Days
$524.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Motiv ReFlex Plug-n-Play Ethanol Sensor Harness

ES#4731941 - 101-0212 - Motiv ReFlex Plug-n-Play Ethanol Sensor Harness - For Vehicles With Motiv ReFlex Unit Currently Installed - Motiv Motorsports - BMW

For Vehicles With Motiv ReFlex Unit Currently Installed affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Vehicles With Motiv ReFlex Unit Currently Installed Only

Brand:
Motiv Motorsports - Corporate Logo
ES#:
4731941
Mfg#:
101-0212
In Stock
$49.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

DeatschWerks Performance Fuel Injector Set - 550cc

ES#4488476 - 16U-00-0050-6 - DeatschWerks Performance Fuel Injector Set - 550cc - 50lb/hr 550cc per minute set of 6 fuel injectors - DeatschWerks - BMW

50lb/hr 550cc per minute set of 6 fuel injectors affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Custom Applications - Will require additional tuning or modifications. NOT DIRECT DROP IN!

Brand:
DeatschWerks - Corporate Logo
ES#:
4488476
Mfg#:
16U-00-0050-6
In Stock
$403.99

This product was last offered at the strikethrough price on
06-02-2026

$399.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ReFlex+ Main Injector Harness - Inline-6

ES#4810312 - 900.1008 - ReFlex+ Main Injector Harness - Inline-6 - Main Injector Harness For Installation of ReFlex+ For Inline-6 BMW Engines - Motiv Motorsports - BMW

Main Injector Harness For Installation of ReFlex+ For Inline-6 BMW Engines affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Motiv Motorsports - Corporate Logo
ES#:
4810312
Mfg#:
900.1008
In Stock
$200.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Bosch Flow Matched EV14 Injectors - US CAR Connector (EV6) - 750cc - 6 Pack

ES#4875844 - 501-0028 - Bosch Flow Matched EV14 Injectors - US CAR Connector (EV6) - 750cc - 6 Pack - Genuine Bosch Motorsports EV14 fuel injectors featuring USCAR (EV6) connector matched and packaged in pack of 6 units - Minimum flow of 750cc @ 3bar (43.5 PSI industry standard) - Bosch - BMW

Genuine Bosch Motorsports EV14 fuel injectors featuring USCAR (EV6) connector matched and packaged in pack of 6 units - Minimum flow of 750cc @ 3bar (43.5 PSI industry standard) affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes!
NOT A DIRECT REPLACEMENT FOR FACTORY INJECTORS - For use with aftermarket port injection kits only

Brand:
Bosch - Corporate Logo
ES#:
4875844
Mfg#:
501-0028
In Stock
$399.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Boost Cooler Stage 2.5 Progressive Water-Methanol Injection Kit

ES#4431148 - SN0-211-BRD - Boost Cooler Stage 2.5 Progressive Water-Methanol Injection Kit - Includes 2.5 gallon tank, stainless steel braided line, 4AN fittings - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Includes 2.5 gallon tank, stainless steel braided line, 4AN fittings affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4431148
Mfg#:
SN0-211-BRD
In Stock at Vendor
$909.99 USD
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Fueling Parts

When your fuel system is at its limit, you can't make more power since your stock fuel system isn't able to deliver enough fuel. Not only can this create 'lean' conditions in the mixture, but it means you're leaving power on the table. Upgrade your fuel system with our performance fueling options from injectors to management and even methanol and other additives.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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