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MHK100840LA - Sensor Lambda O2 Electrical Part Land Rover Range Rover Freelander 1

MHK100840LA - Lambda Sensor – Pre-Cat

- €107,20
€107,20
€107,20 - €107,20
€107,20
OEM Part
OEM: Made by an Original Equipment Manufacturer. This part is made by an original equipment manufacturer or under their license, ensuring compatibility and quality.
Lambda (Oxygen) Sensor for the pre-catalyst position in the exhaust system of the 1.8L 4-cylinder K Series petrol engine.

Installed upstream of the catalytic converter, the sensor measures residual oxygen in the exhaust gas and provides the feedback signal the engine management ECU uses to hold the air/fuel mixture at stoichiometric under closed-loop control. Because this is the controlling sensor rather than a monitoring sensor, deterioration shows up directly as raised fuel consumption, unstable idle and catalyst efficiency fault codes.

Apply anti-seize compound to the sensor thread only when fitting, and keep the sensor tip free of grease and other contamination.

Vehicle Model Land Rover Freelander 1 1996-2006 (L314)
Fitment Notes FREELANDER 1 1996-2006 — 1.8L 4 Cyl K Series Petrol (L314), pre-cat lambda/oxygen sensor
Alternative Codes
MHK100840LMHK100840LA

In stock 2 units
1 · Gouda 1 · Drachten
Express delivery available

When will my order arrive?
  • Order before 15:00 (Mon–Fri): same-day dispatch for in-stock items.
  • UPS Express (order before 14:00): dispatched today, delivered tomorrow where available.
  • Netherlands / Belgium / Germany: 2–4 working days.
  • Other EU countries + UK: 4–8 working days.
  • Outside EU/UK: delivery times vary — contact us for an estimate.

Items may ship from multiple warehouses at no extra cost.

Job kits containing this part

This part is included in 0 job kit(s) below. Pick the kit that matches your vehicle and job, then add what you need.

Frequently asked questions

What does the pre-cat lambda sensor do?
The pre-cat lambda (oxygen) sensor measures oxygen in the exhaust before the catalytic converter and feeds it to the ECU to fine-tune the air/fuel mixture. On the Freelander 1 1.8L K Series petrol it keeps fuelling accurate and helps the catalyst work efficiently.
Where is the pre-cat lambda sensor fitted on a Freelander 1?
The pre-cat lambda sensor screws into the exhaust downpipe or manifold, upstream of the catalytic converter, on the Freelander 1 1.8L K Series (L314). It has a threaded body and a wiring plug, and typically needs a lambda socket to remove.
What are the signs a lambda sensor needs replacing?
Signs of a failing lambda sensor include poor fuel economy, rough running, a lit engine management light and a failed emissions test. On the Freelander 1 1.8L K Series a slow or dead sensor stops the ECU trimming the mixture correctly.

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