Just joined this so forgive me if this has already been covered but is it easy changing the spark plugs on an is200? Not lifted the bonnet to even attempt yet so could be asking a completely stupid question but... Found a great deal of good information so far so glad i joined.

its very easy to do - remove the air filter housing/engine covers as required, remove spark plug coil packs, replace spark plug.

Hi,
I replaced them a month ago.
You remove the air filter (three bolts) and then see the top of the engine with per cylinder a bobine that is fed by an electrical connector.
Disconnect them take away the 6 bolts of the six bobines and pull them out.
The sparkplugs can be removed and replaced. Only needed after 90000 km though.
It's an easy job where the hardest part is to find the spark plugs. Your user manual specifies the type
Bought them at the dealer for far the lowest price compared to internet prices.

i think i`ll change mine shortly ,reason how do you really know a dealer has changed them,on my lex the last service said it had the air con filter changed,i dont think so it was a mess and stunk,so doesnt give me much confidence in garages i`m afraid,

What is the heat range for the IS200 Sparkplugs? And what size are they? (ISO 35? 40? 55?)

There is no standard for heat range.

Denso heat range is 20, NGK is 6. For your mods Zee I would have thought you need to use the next number up for a slightly cooler plug.

Denso part number is SK20R11
14 mm thread - Iridium tipped, 20 heat range, Resistor, 1.1mm gap.

..

Cheers bud.......

So, where can I get them for a fair price?

Denso Iridium SK20R11.

ebay

ebay2

May want backing up these are the right ones

Seems that the NGK IFR6A11 is compareable

LINK

I asked seller of first link about cost+s&h Denso Iridium SK20R11.

Waiting

You could also get the IK20 Iridium Power plugs. Made a difference to my car over the standard ones. Only downside is they need replacing every 30,000 miles.

There are people on ebay.com selling them. I got 8 for about £55 including postage with no customs to pay.

IK20???

Do you have the full term? Should be IK20R11?

IK20 is the full number. However they do have resistors built-in and they are gapped to 1.1mm so they would be IK20R11 is they used their normal part number standard.

Have a look here:
http://www.densoiridium.com/findmypart.php

It won't list the IS200 because it's not available in the US but they use the same plugs as the GS430.

I used NGK LASER IRIDIUM IFR6T11 .......

franmac

Yes they are the replacement standard part along with the Denso SK20R11.

The Denso Iridium Power and the TRD and HKS rebadged Densos are higher performance plugs.

So the SK20 are longlive and IK20 won't live as long?

Basically yes. There is something in the Knowledgebase about this:
http://www.lexusownersclub.co.uk/knowledge..._v2&id=102&c=15

Ups, I thought the IS200 OEM plugs have to be replaced after 60000miles?
The KB talks about 120000Miles. So I don't have to change them now? (57000Miles)

In the US the interval is 120,000 miles but for some reason it's only 60,000 miles in the UK.

So you should replace them after 60,000

After mass of informationsearching I'm looking for Denso Iridium Power IK20 (5304). Can somebody make a offer incl S&H to Germany.

I got two sets of 4 from this guy:
http://cgi.ebay.com/ebaymotors/ws/eBayISAP...&category=33693

so the gap needs to be 1.1 mm do i reset the EU too

So which one is better, Denso or NGK?

Sorry di not read the rest of the thread before placing comment. I have a Standard IS200 Sport, I guess I will go for the Denso IK20's. Cheers.

Garages relpace plugs every year in your annual service surely, so theres no need for long life ones if you get new ones every year.

just fitted my denso ik20 spark plugs ,had no problems fitting them also changed pollen filter and air filter. the car feels even smoother to drive.

do you guys reset the ecu after fitting the spark plugs?

thanks

Found this link whilst searching


www.carsparkplugs.com



not used them yet but they have what we want