MSD Oxygen Sensor Module

MSD Power Grid Wideband Oxygen Sensor Modules

MSD has built its reputation over five decades as a pioneer in performance ignition and powertrain electronics. Oxygen sensor modules represent a natural extension of that expertise — giving racers and performance builders the real-time air/fuel ratio (AFR) data they need to maximize power, protect engines, and fine-tune fuel delivery. When MSD entered this space, they did it on their own terms: fully integrated with the Power Grid ecosystem and engineered to thrive in the harshest race environments.

The Power Grid Wide Band O2 Module

The centerpiece of MSD's oxygen sensor module lineup is the Power Grid Wide Band O2 Module (PN 7765). This is a single-channel air/fuel ratio module designed to interface with the Power Grid (PN 7730) to monitor and record the AFR of internal combustion engines, with data acquisition working in conjunction with the Power Grid data recorder. Rather than being a standalone gauge controller, it functions as a deeply integrated data node within the Power Grid architecture.

When connected to the Power Grid, the Wide Band O2 module sends enabled data acquisition channels over the CAN bus to be recorded by the Power Grid, with channels recorded at a rate of up to 10 samples per second. That level of resolution gives tuners meaningful insight into how AFR behaves across the full RPM range — not just at idle or wide-open throttle.

Key Features That Set MSD Apart

• Plug-and-play integration: The Wide Band O2 Module adds valuable data logging capability to the Power Grid as a plug-and-play addition.
• No free-air calibration: The completely sealed unit uses a Bosch 4.9 oxygen sensor and is easy to set up — no free-air calibration required.
• Flexible 0-5V output: Aside from providing O2 data to the Grid, the module also provides a 0-5V output to drive an air/fuel ratio gauge or provide a signal to other data loggers.
• Multi-fuel calibration: These modules support fuel calibration options for gasoline, methanol, ethanol, E85, propane, and diesel — plus a custom fuel calibration option that can be programmed by the user.
• Dual-color LED diagnostics: A built-in dual-color LED provides on-board diagnostics for quick status checks in the pits or on the dyno.
• Scalable setup: Multiple modules and sensors can be connected to a single Power Grid setup if desired, making it easy to monitor both banks on a V8 simultaneously.

Dual-Channel Option: PN 7766

For builders who need simultaneous monitoring of both exhaust banks, MSD offers a step-up solution. The MSD Power Grid Dual NTK Wide Band O2 Module (PN 7766) is a dual-channel air-fuel ratio system designed to interface with the Power Grid to monitor and record the AFR of internal combustion engines. This makes it an ideal choice for large-displacement V8s or forced-induction applications where bank-to-bank fuel balance is critical.

Replacement Sensor: PN 2267

MSD also offers a dedicated replacement sensor to keep your module running accurately. PN 2267 is the replacement Bosch LSU 4.9 O2 sensor for the Power Grid Wideband O2 Sensor Module, ensuring you can maintain sensor accuracy without replacing the entire module assembly.

Built for Real-World Racing

MSD has gone on to be the ignition of choice of top professional drivers in NHRA, IHRA, NASCAR, World of Outlaws, DIRT, SCORE, IDBA, and many more. That same race-proven philosophy carries through to the Power Grid O2 modules — sealed for durability, straightforward to install, and tightly integrated with the broader MSD ecosystem. Whether you're dialing in a carbureted circle track car or tuning an EFI drag racing application, these modules deliver the wideband AFR data you need to make informed tuning decisions.