Link Wideband O2 sensor (LSU49) - 101-0116

Link Wideband O2 Sensor (LSU49) - 101-0116

A genuine Bosch LSU4.9 wideband lambda sensor that measures exhaust oxygen content across a wide air-fuel ratio range. Paired with a Link ECU that has onboard wideband control, or with an external controller such as the Link CAN Lambda, it gives fast, accurate lambda feedback for fuel tuning, closed-loop fuel control and engine protection.

Suits: Link ECUs with onboard wideband lambda control, the Link CAN Lambda module (125-1000), and other aftermarket ECUs and lambda controllers that support Bosch LSU4.9 sensors.

Includes: Bosch LSU4.9 sensor (5-wire), 6-pin LSU4.9 connector, printed accessory instructions.

Specifications

• Genuine Bosch LSU4.9 wideband lambda sensor
• Planar zirconia (ZrO2) dual-cell sensing element with integrated heater
• Measuring range: lambda 0.65 to lean (infinity)
• Mounting thread M18 x 1.5, 22 mm hex
• Exhaust gas temperature: up to 930°C continuous, up to 1030°C short-term
• Connector: 6-pin LSU4.9 connector (101-0127)
• Dimensions: 180 x 100 x 50 mm (7.09 x 3.94 x 1.97 in)
• Weight: 130 g (4.59 oz)

Notes

• Sold for aftermarket use only. Bosch's warranty excludes aftermarket applications, so no warranty is provided on the sensor.
• Mount where the sensor sees a representative exhaust sample, as close to vertical as practical with the wiring facing up.
• Avoid the end of the exhaust, where fresh air can skew readings, and protect the sensor from condensation and excessive exhaust temperatures.
• Link recommends installation and setup by an official Link dealer.

You may also need

A weld-in O2 bung and plug (101-0117) to mount the sensor, a Link CAN Lambda (125-1000) if your ECU has no onboard wideband control, and a spare LSU4.9 plug kit (101-0127) for custom wiring.

Downloads

• Bosch LSU4.9 Sensor Pinout (PDF)
• LSU4.9 Sensor Diagram (image)
• Link Knowledge Base: increasing LSU4.9 sensor lifespan