MHK100940 - O2 sensor MPI P38, Freel. by AftermarketElectrical Part Land Rover Range Rover Freelander 1, Range Rover

MHK100940 - Oxygen Sensor – Front

- €58,20

€58,20

€58,20 - €58,20

€58,20

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 - Front is the upstream (pre-catalyst) lambda sensor in the exhaust system of the petrol engine.

Threaded into the exhaust downpipe ahead of the catalytic converter, it measures the oxygen content of the exhaust gas and reports it to the engine management ECU. The ECU uses this signal to trim fuelling in closed-loop operation, holding the air/fuel mixture at the stoichiometric ratio for efficient combustion and correct catalyst operation.

Vehicle Model Land Rover Freelander 1 1996-2006 (L314)
Range Rover Classic 1994-2001 (P38)

Fitment Notes FREELANDER 1 1997-2006 — 2.5L KV6 Petrol
RANGE ROVER P38 1994-2001 — 4.0L / 4.6L V8 Petrol
Front oxygen sensor

Alternative Codes

MHK100940MHK100940ES

In stock 7 units

5 · Gouda 2 · 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 MHK100940 oxygen sensor do?

The MHK100940 is the front (upstream, pre-catalyst) lambda sensor. It threads into the exhaust downpipe ahead of the catalytic converter and reports exhaust oxygen content to the ECU, which trims fuelling in closed loop to hold the correct air/fuel mixture.

Where is the front oxygen sensor fitted?

The MHK100940 front oxygen sensor threads into the exhaust downpipe upstream of the catalytic converter. On the Freelander 1 2.5L KV6 and Range Rover P38 4.0L or 4.6L V8 it's the pre-cat lambda sensor feeding the engine management ECU.

What are the signs of a failing front oxygen sensor?

Typically rough idle, poor fuel economy, an illuminated engine warning light, or failed emissions. A worn pre-cat lambda sensor usually forces the ECU to run open loop with incorrect fuelling on the KV6 and V8 engines.

Which vehicles does the MHK100940 fit?

The MHK100940 fits the Freelander 1 (1997-2006) with the 2.5L KV6 petrol engine and the Range Rover P38 (1994-2001) with the 4.0L or 4.6L V8. Use your VIN to confirm the correct front sensor before ordering.