Description
Part Number: 4650
MSD Standalone Wideband Air/Fuel Ratio Gauge Kit – Black Face
The MSD 4650 provides high-precision real-time air/fuel ratio monitoring for EFI and carbureted performance engines with a clear, easy-to-read 2-1/16″ analog display.
Key Features
- ☑ Fully standalone 2-1/16″ (52mm) wideband AFR gauge system
- ☑ Includes premium Bosch LSU 4.9 wideband oxygen sensor
- ☑ Measurement range across 8.5:1 to 18.0:1 Air/Fuel Ratio
- ☑ Microprocessor-controlled 270° full sweep analog pointer movement
- ☑ Programmable LED alert with adjustable low and high AFR warning points
- ☑ Peak recall button allows viewing of minimum and maximum readings
- ☑ Compatible with unleaded, leaded, E85, methanol, and diesel fuels
- ☑ Anodized black billet aluminum bezel with spin lock mounting ring
Technical Specifications
| Brand | MSD Ignition |
|---|---|
| Manufacturer Part Number | 4650 |
| Gauge Type | Standalone Wideband Air/Fuel Ratio |
| Gauge Size | 2-1/16″ (52mm / 53.88mm) |
| Scale Range | 8.5:1 – 18.0:1 AFR |
| Face & Bezel Color | Black Face / Black Billet Aluminum Bezel |
| Pointer Sweep | 270° Full Sweep Analog |
| Oxygen Sensor | Bosch LSU 4.9 Wideband Sensor |
| Fuel Compatibility | Unleaded, Leaded, E85, Methanol, Diesel |
What’s Included in the Box
- 1 x MSD 2-1/16″ Wideband AFR Gauge (Black Face)
- 1 x Bosch LSU 4.9 Wideband O2 Sensor
- 1 x 5 ft (1.5m) 6-Pin Weathertight Sensor Wiring Harness
- 1 x 4 ft (1.2m) Power, Ground & Lighting Wiring Harness
- 1 x Threaded Spin Lock Mounting Ring
Engineered by MSD Ignition for extreme accuracy under demanding motorsport and street tuning conditions, this standalone wideband kit delivers critical air/fuel ratio data without requiring a separate ECU control unit. Order from JP Racing today for guaranteed genuine components backed by fast UK dispatch and expert technical support.




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