Tech Edge sells a small selection of connectors that mate with wideband sensors. This page describes those connectors and some of the parts used in the construction of controller to sensor cables. There is more Bosch LSU connector information here. Information on making sensor cables here.

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Note: pre-made cable ends come with about 100 mm (4") of wire.

Bosch 17025 Connector

The 017 025 sensor is a relatively new LSU 4.9 sensor. Its connector is similar but smaller than the 7057 style connector. The LSU-4.9 sensor is designed to be accurate and fast acting in the lean as well as rich combustion regions and it is more suited to diesel and lean burn applications than the LSU 4.0/4.2 sensors. More LSU info here.

Our part # for our connector kit is [CNK17025]
Our part # for the 17025 sensor is [17025] Bosch part 0 258 017 025.

Note that the pin numbers are marked on the connector body (both the sensor and the mating connector) and the numbering differs from the 7057 style connector although the actual colour layout is the same! The blue wire on the Tech Edge controller-to-sensor cable mates with the grey wire of the sensor. The green wire of the cable goes to the calibration resistor within the body of the sensor. Each sensor is factory calibrated and will have a different value unique to that sensor.

The seals used are the same as for the 6066 connector.

Bosch 7057 or 7200 Connector

Here's the most common connector kit we sell. It's for the newer Bosch 7200 (or the older 7057 VW) LSU sensor. We recommend this sensor for all new standard installations. We belive it represent best value for money and has been shown to work as well or better than more expensive sensors. More LSU info here.

Part # for our connector kit is [CNK7057] VW part 1J0-973-733 (body only).
Part # for Bosch 7200 sensor is [07200] Bosch part # 0 258 007 200.
Part # for Bosch 7057 sensor is [07057] Bosch part # 0 258 007 075.

The newer 7200 sensor has a slightly shorter cable length but is otherwise functionally identical to the 7057 - the 7200 business end has more and smaller holes which may make it work better than the 7057.

Bosch 6066 Connector

Here's another other LSU connector kit we sell. This is for one of the original Bosch LSU sensors. The 6066 is more expensive than most current LSU sensors, not because it is better, but because many early wideband Lambda meters work with ONLY this sensor and Bosch are forced to continue manufacture. We recommend the 7200 sensor over the 6066 for most standard installations. Note that there is some confusion (even from Bosch) over the 6066 being an LSU 4.0 or an LSU 4.2 sensor We generally call the 6066 an LSU 4.0 and it does have different characteristics to the 7200/7057 which are true LSU 4.2 sensors. More LSU info here.

Our part # for our connector kit is [CNK6066]
Our part # for the Bosch 6066 sensor is [006066] Bosch part 0 258 006 066.

Among other applications such as the MoTec PLM Lambda meter, it's used on GM Cadillacs and Saturns.

Because of the open head design, the 6066 may suffer more convective cooling than other sensors. For this reason it is important that guidelines be followed when using this sensor. We have specific placement information that tells you how best to position your LSU sensor.

NTK L1H1 or L2H2 (Sumitomo) Connector

Before the Bosch LSU sensor became common, we mostly sold the L1H1 connectors with our now obsolete version 1.0 and 1.5 analogue widebanc units This connector works for the Honda/NTK L1H1 and L2H2 sensors. Please note that we only stock this particular Sumitomo connector. Image at right shows pin numbering viewed from the back of WBo2 to sensor cable's connector (same as front of sensor connector).

More NTK L1H1 info here.

The connector kit is supplied with a blanking plug, 6 small wire seals, and 3 large wire seals that are mixed and matched in the 8-way connector.

Our part # for our connector kit is [CNKSUMI]

Note that we don't normally sell the L1H1 sensor.

If you need Sumitomo connector information then contact Sumitomo Wiring Systems in your area. We are unable to supply any further Sumitomo connector information.

8 Pin Circular Female Plug

Our standard sensor cables are terminated at the controller end with an 8 pin (microphone style) female plug. This connector is included in DIY cable kits but can be purchased by itself.

Our part # for our connector is [P8PIN].

8 Pin Circular Male Socket

Our standard sensor cable plugs into an 8 pin (microphone style) male socket. This connector is included in all DIY kits (that include optional connector) but it can be purchased by itself.

Our part # for our connector is [S8PIN].