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MHK500870A - Sensor Assembly - Lambda by Autotec ComponentsElectrical Part Land Rover Range Rover Range Rover

MHK500870A - Lambda Sensor – Rear – V8 Petrol

- €75,50
€75,50
€75,50 - €75,50
€75,50
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.
Brand Autotec Components
Lambda Sensor - Rear (post-catalyst oxygen sensor) for the exhaust and engine management system of the 4.2L V8 Supercharged and 4.4L V8 petrol engines.

The sensor mounts in the front pipe and catalyst assembly, downstream of the catalytic converter. Unlike the pre-catalyst sensor it does not trim fuelling directly: the engine control module compares its output against the upstream sensor to assess catalyst conversion efficiency and to set the associated emissions monitor.

The unit is heated so that monitoring becomes active shortly after a cold start. It is not serviceable and is replaced complete.
Vehicle Model Range Rover 2002-2012 (L322)
Fitment Notes RANGE ROVER L322 2002-2009 — 4.2L V8 Supercharged & 4.4L V8 AJ Petrol; rear lambda (O2) sensor on front pipe/catalyst. VIN 6A000001-6A999999; ROW from (V) 7A000001
Alternative Codes
MHK500870AMHK500870

Available to order 2–3 weeks

Not currently in stock. Order now — typically ships within 2–3 weeks.

Need it faster? Contact us about express import (2–5 business days).

When will my order arrive?

This item is ordered from our supplier on request. Typical lead time is 2–3 weeks from order confirmation.

  • Netherlands / Belgium / Germany: 2–4 working days after dispatch.
  • Other EU countries + UK: 4–8 working days after dispatch.
  • Outside EU/UK: contact us for an estimate.

Need it faster? Express import available in 2–5 business days — contact us before ordering.

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 this rear lambda sensor do?
This rear lambda sensor monitors exhaust oxygen after the catalyst on the Range Rover L322 4.2 V8 Supercharged and 4.4 V8 AJ petrol, feeding the ECU for catalyst monitoring. It mounts on the front pipe or catalyst. Keeping it healthy maintains emissions compliance and correct running.
Which L322 engines and VINs does it fit?
This lambda sensor fits the Range Rover L322 4.2 V8 Supercharged and 4.4 V8 AJ petrol, the post-2006 AJ-series engines, not the earlier M62 V8. It covers VIN 6A000001 to 6A999999, and rest-of-world cars from VIN 7A000001. Confirm your VIN and engine before ordering.
What are the signs this lambda sensor needs replacing?
A failing rear lambda sensor typically brings up a check-engine light with a catalyst or oxygen sensor fault code on the L322 4.2 SC or 4.4 AJ V8. Symptoms can include worse fuel economy and a failed emissions test. Replacing the sensor clears the fault and restores monitoring.

Alternative & Related Options

Same part, different brands or quality grades. Click any option to view full details.

1 option
MHK500870 - Lambda Sensor – Rear – V8 Petrol
OEM MHK500870 - Lambda Sensor – Rear – V8 Petrol
Stock 1
€89,50 excl. VAT
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