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The Gledewen LSU 4.9 WideBand O2 Sensor is a high-precision, OEM-standard oxygen sensor designed for AEM X-Series AFR controllers. It delivers accurate air-fuel ratio readings with a durable alloy steel build rated for exhaust temperatures up to 800°C. Compatible with multiple AEM models and replacing OE# 17025, it ensures seamless installation and reliable performance backed by a 12-month warranty.



| ASIN | B0863P6YLQ |
| Best Sellers Rank | #14,074 in Automotive ( See Top 100 in Automotive ) #5 in Automotive Replacement Oxygen Sensors |
| Brand Name | Gledewen |
| Customer Reviews | 4.2 4.2 out of 5 stars (1,021) |
| EU Spare Part Availability Duration | 1 Years |
| Item Dimensions | 6.1 x 4.7 x 1.7 inches |
| Manufacturer | Gledewen |
| Material Type | Alloy Steel |
| Maximum Supply Voltage | 12 Volts (DC) |
| Measuring Range | 0% - 100% oxygen |
| Model | LSU 4.9 |
| Mounting Type | Flange Mount |
| Output Type | electrical signal |
| Part Number | GW-QCGQ05 |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specific Uses For Product | Oxygen Sensor |
| Style Name | Digital |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 800 Degrees Celsius |
F**G
Better than Bosch
Works better than Bosch, I’ve been through 6 Bosch sensors and all failed anywhere from a week to a few months. I’ve put this sensor in and had been smooth as butter.
A**N
Does it's job
It's A wide band sensor. It fits how it should, it seems to be quite accurate as it is hooked up to an AEM gauge and my AFR readings are what I would expect them to be. The overall quality of the sensor is very high, the connector fit perfectly into my AEM wideband connector and it's been on there for some time now and is still doing its job. Phenomenally. As far as installation of a wideband sensor, if you need to retain your second O2 sensor, you will need to buy an additional bung drill the whole weld the bung, and then install the O2 sensor like you would any other sensor. And as long as it's not too far behind your second O2 sensor, your readings should be pretty good. Ideally you'd want The sensor to be plumbed in near your upstream O2 sensor but I have tti long tubes and my upstream sensor is not in my merge collector which seems kind of like a mishap on their end, but I digress. It's a great sensor. It does its job. It seems to be very accurate and it's a very good price. 10 out of 10 would recommend
J**N
great
So far it's working great. Using it on my GlowShift A/F gauge
M**R
This is my first one, and it doesn't work right.
Does not work properly. I installed it, and it gave no error. The heater came on and shows 22.4 AFR. When I drive, it never went away from 22.4. So I remembered that I had to calibrate it in "free air". So, I took it back out and let it hang in free air, and recalibrated it. Now it will show 22.4 99% of the time. Only under full boost will it register anything lower than that, and then only for a second. Then, while under full boost (the lowest AFR levels), it jumps back up to 22.4. This one just doesn't work, even after calibration.
P**L
Good sensor for hondata s300
Works good on my hondata s300 and have no complaints so far everything works as it should
C**N
They work but I’m not sure how accurate
It fits my AEM wideband connector, I’m hesitant on the accuracy of the readings. Might be my fuel trims fluctuating. Side note, make sure you disconnect and/or remove O2 sensors prior to welding on exhaust. Probably a good idea to disconnect the battery too.
A**H
Legit wideband sensor
Perfect
R**H
Wideband O2 sensor
O2 sensor wide band looks to be a good quality have not installed it yet
M**O
excelente producto
A**R
Good
I**M
The sensor malfunction
D**L
Greta product so far. Working as it should. Great alternative instead of buying the 300 dollar one from aem for my air/fuel gauge.
I**N
Plugged it in, worked okay read proper idling for a few minutes. AEM gauge went out, hmm odd. It blew a fuse (never happens) replaced fuse, turned it back on, it went full lean and started smoking. Unplugged the back of the gauge really quick. Double checked everything, tried to turn it on with just power wires plugged in to the back, nothing. Plugging in the sensor harness to the back gets it to “power on” but it’s pooched, just looks like the picture. What a terrible cable… RIP to my UEGO. UPDATE: does not power on at all now after sitting
Trustpilot
2 months ago
1 month ago