Lambda sensors - genuine or aftermarket?

[Nigel_O]

I need at least a pair of O2 sensors (upstream) and possibly downstream too for my 4.3 V8 Vantage

I believe there are aftermarket sensors available, but there's not much point if they are poor quality. Both AM specialists I've spoken to today don't recommend aftermarket.

However, £800 on AM genuine makes me baulk - has anyone fitted decent aftermarket and found them to be OK. if so, where from?

[DAMIT]

https://www.youtube.com/watch?v=QffBmobPa-8

All you need to know from Aston1936

Alternative O2 Sensors for an Aston Martin DB9

[Nigel_O]

Looks like NTK OZA816-EE1 / NGK95598 are compatible. Under £40 each, instead of almost £200

[bogie]

No need to buy OE, when I changed the O2 sensors on my 4.3 Vantage about 13 years ago I just got the NGK ones off ebay for about £25 each and paid my local garage an hours labour to fit.

[Greathey]

Aftermarket works just as well if not better. Mine had them replaced 3 years ago no issues

[XMark]

Interestingly NGK recommend two different part numbers for front and rear, only difference being cable length, it may help when looking for some

[Nigel_O]

XMark said:

Interestingly NGK recommend two different part numbers for front and rear, only difference being cable length, it may help when looking for some

Exactly the info I was looking for - thanks

NGK = about £180 for all four sensors (might as well do them all, while I'm there). Genuine Aston Marton = £808

[XMark]

Nigel_O said:

Exactly the info I was looking for - thanks

NGK = about £180 for all four sensors (might as well do them all, while I'm there). Genuine Aston Marton = £808

£150 delivered on sparkplugs but of course, out of stock and 15-20 working days delivery, maybe….

[Nigel_O]

Looks like the upstream O2 sensors are unavailable from most reliable sources (I'm not using Ebay if I can help it)

The part is common with stiff like Ford Cougar, Mondeo and even Ka, so I'm wondering if a Ford genuine would be an alternative...

[bogie]

The part is common on numerous models, its just the cable length to be aware of, I had to re-order when 2 turned up with too short cables.

[V8VS]

Not sure if the sensors are the same on the 4.3 and 4.7 bit a quick Google should be able to tell you and the posts above appear to confirm they are.

I got these from Opie Oil:

• 2 × NTK 95598 / OZA816-EE1 (front control sensors)
• 2 × NTK 92107 / OZA836-EE13 (rear monitoring sensors)

Just under £160 for the four.

That said, they only had one NTK 95598 / OZA816-EE1 and the other one is on back order, so I ve currently got a here of the four sensors ready to fit.

[Nigel_O]

V8VS said:

Not sure if the sensors are the same on the 4.3 and 4.7 bit a quick Google should be able to tell you and the posts above appear to confirm they are.

I got these from Opie Oil:

• 2 × NTK 95598 / OZA816-EE1 (front control sensors)
• 2 × NTK 92107 / OZA836-EE13 (rear monitoring sensors)

Just under £160 for the four.

That said, they only had one NTK 95598 / OZA816-EE1 and the other one is on back order, so I ve currently got a here of the four sensors ready to fit.

Yup - that’s what I’ve found. Upstream aren’t available from anywhere reliable and downstream are in stock everywhere

[V8VS]

Hopefully they’ll be back in stock soon, as they are used across Ford and Mazda you would think demand would be a little higher. If they were Aston only, you can understand lack of availability. Fingers crossed. I’ll post back when I get the fourth one I’m waiting for.

[stevenichols]

Reminds me of a problem I had a couple of years back.

I bought some NGK Lambda sensors, but struggled to fit them due to their location and the fact I couldn’t get the old ones undone.

Took them to my local garage who said they would only fit parts that they have supplied for legal reasons (?).

So I said, well you order them then and I’ll keep the ones I bought. Booked it back in again a week later, only to be told that they couldn’t get them!

As it turned out it was a MAF sensor that needed replacing. Still got the Lambda sensors in their boxes!,

[V8VS]

Maybe Nigel_O could buy them from you?