When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have been trying to finding out what spark plugs to use on the X350 3.0 V6 model (not sold in the US). It was not specified in the Driver's Handbook (couldn't find the car care handbook), and many on-line resources suggest platinum/iridium plugs for the V8 and/or Supercharged model. Other findings are
Jaguar Parts No.: XR842795/C2S46895 (NGK plugs but not full disclosure on exact no.)
Web mention: NGK-IFR5N10; NGK-TR6AP13E; NGK-PTR6D-13; NGK-BPR6EFIX-10(13?)
British Parts mentions Denso Plugs as substitute of NGK plugs but full details not disclosed.
A local plug store showed me the NGK Manual indicating that BPR6EF1X-13 (iridium plug) is the only plug suitable for 2004-2009 XJ 3.0 V6.
Was suspecting that the intermittent "Restricted Performance" amber warnings are spark plugs related, so would like some pointer here.
More: Found one eBay listing showing NGK-TR6AP13E (see picture)
claiming it has replaced NGK-PTR6D-13, and is suitable X350 3.0 V6, whereas the compatibility check section of some other eBay listings say it would not fit XJ 350 3.0 V6. I remember seeing a picture of the NGK spark plug with a big letter "R" in Jaguar genuine parts indexed C2S46895. A local spark plug store said it has never seen TR6AP13E, but quickly identified NGK-BPR6EF1X-13P (see pictures)
as suitable for Jaguar, and showed me the NGK catalogue to confirm so. According to the boxes, BRP6EF is made for the Asian market. Strangely, could not find anything conclusive about the spark plug specification in the Driver's Handbook or in various forums.
The mystery continues. I can of course remove the spark plug from my engine to verify, but what if it was not neither of the two, and was not the right choice in the first place? Anyhow, I don't recall my workshop having changed them in the last three years (during which I have added 65000 km), so I believe that they must be due if not overdue for replacement.
The Jaguar part number for the 3.0L V6 spark plug is XR8 42795, but in the Workshop Manual it gives the OEM part number as AWSF22FS, which indicates the original plugs are made by Autolite/Motorcraft rather than NGK. This makes sense because the 3.0L engine is a Ford Duratec V6 engine with VVT and a few other upgrades for use in Jaguars. The same engine was used in S-Types and X-Types. This chart is from pdf page 1805 of the Powertrain section of the Workshop Manual, which you can download from the 'HOW TO' quicklinks thread of this X350 forum:
Regarding the use of anti-seize, several plug manufacturers now plate their plug bodies so that no anti-seize is required. This includes the OE NGK plugs for the Jaguar 4.2L V8. Check for the current specifications from Autolite/Motorcraft before you use anti-seize, and if it is required, use only nickel-based compound due to the potential for galvanic corrosion with copper-based compound.
I learn something new every day. Never heard of or seen any Motorcraft plugs.
British Parts is selling Denso plugs for X350, but its site does not show full Denso parts number. There are many listings for Jaguar genuine lugs boxed with Jaguar Parts Number C2S46895, and says they are NGK plugs - again no NGK Parts Number is provided - only a picture showing the top end of the NGK plug with an "R" that incidentally matches the image of NGK TR6AP-13E found elsewhere on the web.
My search continues. Don't know why Jaguar has to be so secretive about the spark plugs. In the X300 forum, we all learned that Jaguar engines are extremely sensitive to the choice of spark plug, and there are two major camps one favouring Champion lugs as per factory specification, whereas the other camp favouring NGK.
I guess I should have been more clear. You do not need NGK plugs. You need Ford plugs.
The OE plugs in the X350 4.2L V8 engines were made by NGK because the engine management system was made by Denso (a former division of Toyota). But your Jaguar 3.0L V6 engine is an upgraded Ford Duratec with a Ford engine management system. So the correct spark plugs are made by Ford parts suppliers, either Autolite or Motorcraft.
The part number in the Workshop Manual is clearly a Ford number and not an NGK number, so you need Ford plugs. My recommendation would be to find the correct Autolite or Motorcraft AWSF22FS plugs. If they are not available in Hong Kong, perhaps you can order them from Australia.
I have made further enquiries:
(a) David Manners says Jaguar Genuine Spark Plugs boxed as C2S46895 are NGK plugs;
(b) NGKPartFinderCo.UK specifies NGK TR6AP-13E as the plug for X350 3.0 V6;
(c) British Parts says it has been selling Denso T20TT as the plugs for X350 3.0 V6.
I would be inclined to order NGK plugs since Jaguar genuine parts are NGK's. In any case, these plugs so identified are not available in Hong Kong.
I have made further enquiries:
(a) David Manners says Jaguar Genuine Spark Plugs boxed as C2S46895 are NGK plugs;
(b) NGKPartFinderCo.UK specifies NGK TR6AP-13E as the plug for X350 3.0 V6;
(c) British Parts says it has been selling Denso T20TT as the plugs for X350 3.0 V6.
Since the Jaguar Workshop Manual gives a Ford part number for the spark plugs (see post #3), I would tend to trust the actual Jaguar documentation over two independent parts suppliers. I would also trust Jaguar over NGK, who of course is only going to give you NGK part numbers and not the OEM part number if the OEM plugs were not NGK.
However, since Ford sold Jaguar to Tata Motors, it is certainly possible that Jaguar is now supplying NGK plugs as replacements instead of the original Autolite or Motorcraft plugs since it purchases so many plugs from NGK for other models. That doesn't change the fact that the original plugs in your engine were Ford plugs.
If Motorcraft is OEM plugs then NGK and Denso are substitutes. They are all platinum plugs. As the X350 3.0 V6 model were only sold in the UK and Hong Kong, hopefully some members the same model or similar Ford engines in the UK can throw some light on which plugs they use and/or which one is a better match in terms of efficiency and durability.
As Don mentioned above, your 3.0 engine was available worldwide in the S-type and X-type Jags, not to mention millions of Fords. They came with motorcraft plugs AFAIK.
If Motorcraft is OEM plugs then NGK and Denso are substitutes. They are all platinum plugs. As the X350 3.0 V6 model were only sold in the UK and Hong Kong, hopefully some members the same model or similar Ford engines in the UK can throw some light on which plugs they use and/or which one is a better match in terms of efficiency and durability.
As Mikey reminds us, it would also be worth searching the S-Type and X-Type forums for member reports on spark plugs.
As Don mentioned above, your 3.0 engine was available worldwide in the S-type and X-type Jags, not to mention millions of Fords. They came with motorcraft plugs AFAIK.
Thanks for pointing out that the 3.0 engine is actually used in the S-type and X-type available worldwide, and that it being a Ford engine it would make sense for them to use Motorcraft plugs as per Jaguar's Workshop Manual. However, I was just puzzled that all web pictures of Jaguar Genuine Spark Plugs C2S46895 sold in the UK, Japan, China, Russia, eBay and elsewhere, are featured with NGK plugs, not Motorcraft plugs. I picked up a few below:
From everything we've discovered, it's obvious that the original plugs in your engine were Ford Motorcraft AWSF22FS. But for some reason we can only guess, Jaguar now supplies NGK TR6AP-13E as replacement plugs (or possibly another NGK equivalent plug).
I read through the threads you linked to as far as I could tell, the reasons given for using NGK plugs rather than Motorcraft were either availability or the desire to use Iridium plugs for extra long life. So you should be fine with whichever one you can find and afford.
One thing that would be worth doing is to compare the heat range and resistance specs of the NGK plugs you choose with the OE Motorcraft plugs. I happened to run across this TSB that states that low spark plug resistance has been known to cause problems in the 3.0L engines:
Many thanks for the additional info. Can't go wrong with Jaguar's latest choice. In the case of X300, Champion plug RC9YCC was written into X300's Car Care Handbook, but Jaguar later recommended Champion RC12YCC after discovering that the AJI6 engine runs better with a hotter plug. For the AJ27 engine, AWFS22SF might be the original OEM plug, Jaguar may have moved on to use NGK instead as genuine parts for reason only known to Jaguar. Haven't been able to find any TSB explaining the change.
For the AJ27 engine, AWFS22SF might be the original OEM plug, Jaguar may have moved on to use NGK instead as genuine parts for reason only known to Jaguar.
Just for clarity, the AJ27 is the 4.0L V8 engine used in later X100s and X308s from 1999 to 2002/2003. I believe the code for your AJ-V6 is AJ30.
My X350 3.0 V6 was previously maintained at the dealer before I bought it four years ago, and I do not recall the independent Jaguar workshop that serviced my X350 having changed the spark plugs during my ownership. So I ask my mechanic to remove one plug from my car to verify the plug being used. Don is right, it is Motorcraft plug - not AWSF22SF, but its sibling AGSF22FSM (see pictures)
It might be the original plug that came with the car, as it might not have been replaced since new - when I bought it its mileage was only 32,500 km.
Here is a picture of the plug showing its present state - time for replacement.
Let me replace all plugs with NGK's and see how it goes.
Hello,
Do you have info on how it went?
I have a 3.0 V6 X-type and the exact same Motorcraft AWSF22FS on it.
I've been looking for 4 days to find the right spark plugs and the one given by jaguar Europe WON'T fit. The ngk R C2S46895 won't fit, unless it's a european model.
Please tell me if you find any compatibility, I'm having a hard time finding the good reference in France.
05-14-2017 | 11:52 PM
Spark Plugs for X350 3.0 V6
