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MHK100720 - Oxygen Sensor – Pre-Catalyst

- €113,80
€113,80
€113,80 - €113,80
€113,80
Aftermarket Part
Aftermarket: Quality alternative. This is a quality alternative, designed to fit and function like the original part, often at a more competitive price.
Oxygen Sensor – Pre-Catalyst for the 1.8L K Series petrol engine, fitted in the exhaust upstream of the catalytic converter.

This upstream lambda sensor measures the oxygen content of the exhaust gas and feeds the signal to the engine control unit, enabling closed-loop control of the air/fuel mixture.
Vehicle Model Land Rover Freelander 1 1996-2006 (L314)
Fitment Notes FREELANDER 1 1997-2006 — 1.8L 4 Cyl K Series Petrol. Pre-catalyst oxygen sensor. VIN 1A576764 to 1A599999.
Alternative Codes
MHK100720

In stock 1 unit
0 · 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

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Frequently asked questions

What is the MHK100720 pre-catalyst oxygen sensor used for?
The MHK100720 pre-catalyst oxygen sensor sits in the exhaust upstream of the catalytic converter on the Freelander 1 1.8L K-Series petrol. This upstream lambda sensor measures exhaust oxygen content and feeds the ECU, enabling closed-loop control of the air/fuel mixture.
Which Freelander 1 models does this oxygen sensor fit?
This pre-catalyst oxygen sensor fits the Freelander 1 (1997-2006) 1.8L 4-cylinder K-Series petrol, between VIN 1A576764 and 1A599999. Check your VIN falls within this range before ordering, as it's specific to this build window. It's the upstream sensor, not the post-catalyst one.
Is this the upstream or downstream oxygen sensor?
This is the upstream (pre-catalyst) oxygen sensor, fitted in the exhaust before the catalytic converter on the Freelander 1 K-Series. The upstream sensor controls the live air/fuel mixture, whereas a downstream sensor only monitors catalyst efficiency. Make sure you need the pre-catalyst position before ordering.
What are the signs this oxygen sensor needs replacing?
A failing pre-catalyst oxygen sensor typically triggers the engine warning light, rough running, poor fuel economy, and failed emissions tests on the Freelander 1 K-Series. A slow or dead sensor stops the ECU correcting the mixture accurately. Replacing it usually restores closed-loop fuelling and economy.