• Track Your order
  • Contact Us
  • Call (248) 786-7012
Facebook Instagram Youtube
Facebook Instagram Youtube
  • Shop
    • All BigStuff Products
    • BigStuff Gen4 Pro Xtreme
      • Big Band Modules
      • Connectors & Terminal Kits
      • GEN4 Feature Upgrades
      • Harnesses & Hardware Kits
      • Main Wire Harness & Injector Wire Harness Kits
      • O2 Sensors / Ignition Coils
    • BigStuff Pro Hardware
      • Big Drive Injector Driver Systems
      • Connectors & Terminal Kits
      • Crank Wheels / Driveshaft Collars
      • Dealer / Jobber
      • Fuel Pumps
      • Sensors, Actuators, & Coils
    • BigStuff Gen4 Price List
    • Apparel
  • Build a System
  • Gen4 ECU
    • Big Band Modules
    • Connectors & Terminal Kits
    • GEN4 Feature Upgrades
    • Harnesses & Hardware Kits
    • Main Wire Harness & Injector Wire Harness Kits
    • O2 Sensors / Ignition Coils
  • Dealers
  • Tech Info
    • Gen3 Tech & Support
    • Gen4 Tech & Support
    • Gen4 ECU Firmware
    • Gen4 ECU Calibrations
    • Software Downloads
  • About
    • About BigStuff
    • Warranty Information & Registration Information
    • News
    • Customers
  • Contact
  • My Account
$0.00 0 Cart
  • Shop
    • All BigStuff Products
    • BigStuff Gen4 Pro Xtreme
      • Big Band Modules
      • Connectors & Terminal Kits
      • GEN4 Feature Upgrades
      • Harnesses & Hardware Kits
      • Main Wire Harness & Injector Wire Harness Kits
      • O2 Sensors / Ignition Coils
    • BigStuff Pro Hardware
      • Big Drive Injector Driver Systems
      • Connectors & Terminal Kits
      • Crank Wheels / Driveshaft Collars
      • Dealer / Jobber
      • Fuel Pumps
      • Sensors, Actuators, & Coils
    • BigStuff Gen4 Price List
    • Apparel
  • Build a System
  • Gen4 ECU
    • Big Band Modules
    • Connectors & Terminal Kits
    • GEN4 Feature Upgrades
    • Harnesses & Hardware Kits
    • Main Wire Harness & Injector Wire Harness Kits
    • O2 Sensors / Ignition Coils
  • Dealers
  • Tech Info
    • Gen3 Tech & Support
    • Gen4 Tech & Support
    • Gen4 ECU Firmware
    • Gen4 ECU Calibrations
    • Software Downloads
  • About
    • About BigStuff
    • Warranty Information & Registration Information
    • News
    • Customers
  • Contact
  • Shop
    • All BigStuff Products
    • BigStuff Gen4 Pro Xtreme
      • Big Band Modules
      • Connectors & Terminal Kits
      • GEN4 Feature Upgrades
      • Harnesses & Hardware Kits
      • Main Wire Harness & Injector Wire Harness Kits
      • O2 Sensors / Ignition Coils
    • BigStuff Pro Hardware
      • Big Drive Injector Driver Systems
      • Connectors & Terminal Kits
      • Crank Wheels / Driveshaft Collars
      • Dealer / Jobber
      • Fuel Pumps
      • Sensors, Actuators, & Coils
    • BigStuff Gen4 Price List
    • Apparel
  • Build a System
  • Gen4 ECU
    • Big Band Modules
    • Connectors & Terminal Kits
    • GEN4 Feature Upgrades
    • Harnesses & Hardware Kits
    • Main Wire Harness & Injector Wire Harness Kits
    • O2 Sensors / Ignition Coils
  • Dealers
  • Tech Info
    • Gen3 Tech & Support
    • Gen4 Tech & Support
    • Gen4 ECU Firmware
    • Gen4 ECU Calibrations
    • Software Downloads
  • About
    • About BigStuff
    • Warranty Information & Registration Information
    • News
    • Customers
  • Contact
$0.00 0 Cart

Click HERE to Shop BigStuff Gen4 ProXtreme EFI Systems

Get On-Site & Remote Tuning Services from Our Authorized Dealers

Tech Info, Downloads, & More

Click HERE to Shop BigStuff Gen4 ProXtreme EFI Systems

Get On-Site & Remote Tuning Services from Our Authorized Dealers

Tech Info, Downloads, & More

Home BigStuff Pro Hardware Sensors, Actuators, & Coils

GEN4 PRO XTREME – BOSCH LSU4.9 WBO2 Sensor

$115.00

Replacement parts for the current wideband O2 sensors.

SKU: BS4-003-003
Categories: All BigStuff Products, BigStuff Gen4 ProXtreme, BigStuff Pro Hardware, Dealer / Jobber, O2 Sensors / Ignition Coils, Sensors, Actuators, & Coils
Share: Facebook Twitter Tumblr Linkedin
Description
Additional information

The Bosch LSU4.9 wide band air fuel ratio sensor is our standard air fuel ratio sensor when using the GEN4 ECU. This robust sensor can be used for any fuel combination including gasoline, ethanol and alcohol. Within the GEN4 software you simply tell it what type of fuel your running and the stochiometric value for the fuel being used and the ECU takes it from there. 

The GEN4 system can run anywhere from 1 oxygen sensor to a dual sensor setup for reading dual exhaust or for the ultimate in inputs and control, 8 air fuel ratio sensors. The GEN4 ECU can run closed loop control using any of the previous combinations including the 8 sensor configuration. With the power to individual monitor and control each cylinder you will be able to unleash more power and torque from your current combination!

We do not recommend this sensor for high power alcohol setups but in mild combinations it will work fine. 

Weight 1 lbs
Dimensions 5 × 5 × 2 in

Related products

5/16" Driveshaft Sensor, HED Dealer/Jobber Net
Quick View
All BigStuff Products, Dealer / Jobber, Sensors, Actuators, & Coils

5/16″ Driveshaft Sensor, HED Dealer/Jobber Net

BigStuff TPM
$195.00
GEN4 DAI Connector/Terminal Kit
Quick View
All BigStuff Products, Connectors & Terminal Kits, Connectors & Terminal Kits

GEN4 DAI Connector/Terminal Kit

BigStuff TPM
$14.00
GEN4 IPU Connector/Terminal Kit
Quick View
All BigStuff Products, Connectors & Terminal Kits, Connectors & Terminal Kits

GEN4 IPU Connector/Terminal Kit

BigStuff TPM
$19.00
Placeholder
Quick View
All BigStuff Products, Crank Wheels / Driveshaft Collars

MSD Compatible Phased Reluctor

BigStuff TPM
$20.00
Ford Coyote Engine 24-Tooth Crank Wheel
Quick View
All BigStuff Products, Crank Wheels / Driveshaft Collars

Ford Coyote Engine 24-Tooth Crank Wheel

BigStuff TPM
$375.00
3/8" Hall Effect Device (HED) Pickup
Quick View
All BigStuff Products, Sensors, Actuators, & Coils

3/8″ Hall Effect Device (HED) Pickup

BigStuff TPM
$189.00
Placeholder
Quick View
All BigStuff Products, Sensors, Actuators, & Coils

MSD Compatible H.E.D. W/L.E.D. – 1/2″ x 20

BigStuff TPM
$125.00

Product brand

Bosch
View all products

Product categories

  • All BigStuff Products (134)
  • Apparel (2)
  • BigStuff Gen4 ProXtreme (92)
    • Big Band Modules (8)
    • Connectors & Terminal Kits (11)
    • GEN4 Feature Upgrades (10)
    • Harnesses & Hardware Kits (27)
    • Main Wire Harness & Injector Wire Harness Kits (30)
    • O2 Sensors / Ignition Coils (9)
  • BigStuff Pro Hardware (51)
    • Big Drive Injector Driver Systems (2)
    • Connectors & Terminal Kits (10)
    • Crank Wheels / Driveshaft Collars (6)
    • Dealer / Jobber (14)
    • Sensors, Actuators, & Coils (23)
  • Swag (4)

Shop by Brand

  • All brands
  • BigStuff TPM(118)
  • Bosch(2)
GEN4 PRO XTREME – 1/4&#8...

$105.00

GEN4 PRO XTREME – NTK WB...

$699.00

Sign Up For Our Newsletter

Follow @BigStuffTPM on Instagram

Follow on Instagram

BigStuff is an American-based company focused on the design, manufacture, and marketing of state-of-the-art electronic engine and powertrain controllers for the performance aftermarket.

Email: Support@BigStuffTPM.com

Phone: (248) 786-7012

DEALER Services

  • BigStuff EFI Tuning
  • Custom Programming
  • Power Management
  • On-Site Tuning Support
  • Remote Tuning Support
  • Hardware Sales
  • Project Consultation
Learn More

follow @BigStuffTPM

Facebook Instagram Youtube

BigStuff TPM

4 days ago

BigStuff TPM
Turbo John Racing hit up Mike Hill's race at Carolina Dragway this weekend and his boosted small block Ford ran quicker than ever with#BigStuffTPMffTPM Gen4 Pro Xtreme ECU! … See MoreSee Less

Faster…. 85mm boosted SBF

www.youtube.com

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
View on Facebook
· Share

Share on Facebook Share on Twitter Share on Linked In Share by Email

subscribe on YouTube

BigStuff GEN4 V12 Ferrari Engine Dyno Test

Subscribe to See More!
© 2026 BigStuff Total Power Management, all rights reserved. | Website developed by P.TEN Marketing.

2026 Ⓒ All rights reserved BigStuff Total Power Management

Website developed by P.TEN Marketing

Home
Shop
Wishlist
0 Cart
More
More
  • Shop
    • All BigStuff Products
    • BigStuff Gen4 Pro Xtreme
      • Big Band Modules
      • Connectors & Terminal Kits
      • GEN4 Feature Upgrades
      • Harnesses & Hardware Kits
      • Main Wire Harness & Injector Wire Harness Kits
      • O2 Sensors / Ignition Coils
    • BigStuff Pro Hardware
      • Big Drive Injector Driver Systems
      • Connectors & Terminal Kits
      • Crank Wheels / Driveshaft Collars
      • Dealer / Jobber
      • Fuel Pumps
      • Sensors, Actuators, & Coils
    • BigStuff Gen4 Price List
    • Apparel
  • Build a System
  • Gen4 ECU
    • Big Band Modules
    • Connectors & Terminal Kits
    • GEN4 Feature Upgrades
    • Harnesses & Hardware Kits
    • Main Wire Harness & Injector Wire Harness Kits
    • O2 Sensors / Ignition Coils
  • Dealers
  • Tech Info
    • Gen3 Tech & Support
    • Gen4 Tech & Support
    • Gen4 ECU Firmware
    • Gen4 ECU Calibrations
    • Software Downloads
  • About
    • About BigStuff
    • Warranty Information & Registration Information
    • News
    • Customers
  • Contact
Cleantalk Pixel