Are these the original ??

[Gsragtop]

So I purchased a 2010 3.8 Sedan with 160,000 miles on her a few weeks back. Man do I love this car.

Today I pulled a spark plug, because I'm not sure if or when they were last replaced. Honestly I can't tell if this is original or an OE replacement. The car runs great, and I really don't want to pull the manifold but if they are original with 160,000 it's time for them to go.

What are your thoughts ??

 

[dougmcp]

The original plugs used were NGK iridium that should be good for 100K miles. My 2013 3.8 calls for a gap of 1.0 ~ 1.1 mm (0.0394 ~ 0.0433 in.) and yours appear to be much larger (eyeballing the photo looks to me like way over 0.070).
Of the top I would say these are due for replacement.

 

[Ambush]

Welcome to the Genny Club!
Yes I agree with Doug. They are due big time. I JUST did mine. It was a bear thanks to the manifold. BUT I got it done.

 

[NJTom]

I have a 2009 3.8 V6 with 80k. I would like to change the plugs and wondered if this was correct NGK # SILZKR6B11?
Is there a step by step procedure available to remove the manifold for this engine?

 

[Mark_888]

I have a 2009 3.8 V6 with 80k. I would like to change the plugs and wondered if this was correct NGK # SILZKR6B11?
Is there a step by step procedure available to remove the manifold for this engine?

Looks like the Hyundai part number depends on engine build date (not sure exactly where that is, but may not be the same as vehicle assembly date):

ELECTRICAL / ELECTRICAL / IGNITION SYSTEM / SPARK plug
1884611060 - spark plug
3.8 LITER, 5/1/08 to 3/17/09
Online Price $12.63

ELECTRICAL / ELECTRICAL / IGNITION SYSTEM / SPARK plug
1885111060 - spark plug
3.8 LITER, from 3/17/09
Online Price $14.08

 

[dougmcp]

I have a 2009 3.8 V6 with 80k. I would like to change the plugs and wondered if this was correct NGK # SILZKR6B11?
Is there a step by step procedure available to remove the manifold for this engine?

Check your build date, NGK calls for 1) SILZKR6B11 for anything built after May 1, 2008 and 2) ILFR5B11 for before that date.
The difference between the two is the 1) Thread diameter is 0.472" heat range 6 2) Thread diameter 0.551" heat range 5.
Here's a link to the US parts catalog http://www.partcat.com/ngk
I have the service manual for your car, if you need it send me an email or IM and I will get it to you.

 

[Mark_888]

Check your build date, NGK calls for 1) SILZKR6B11 for anything built after May 1, 2008 and 2) ILFR5B11 for before that date.
The difference between the two is the 1) Thread diameter is 0.472" heat range 6 2) Thread diameter 0.551" heat range 5.
Here's a link to the US parts catalog http://www.partcat.com/ngk
I have the service manual for your car, if you need it send me an email or IM and I will get it to you.

The 2009 Genesis was the first year for the USA model, and were probably built after May 1, 2008. There was a 2008 Genesis model released in Korea.

 

[NJTom]

the build date for my car is Nov 2008. So the SILZKR6B11 is my guess. Maybe I'll pull out one of the driver side plugs and confirm.

I'm interested to know why they would switch plugs for the same engine. What would happen if the other plug is used?

dougmcp - yes, I would be interested in the service manual! I'll send you a PM now with my email. Thank you.

 

[dougmcp]

I'm interested to know why they would switch plugs for the same engine. What would happen if the other plug is used?

The plug for the older engine is a larger size thread and one heat range cooler. If the thread size was the same it would probably be fine. Service manual in your email.

 

[Mark_888]

I'm interested to know why they would switch plugs for the same engine.

There is no guarantee that the application chart provided by the spark plug company is correct. The parts catalog issued by HMA shows that the earliest build date for the 2009 Genesis V6 is 5/1/2008. 2009 was the first model year of the USA Genesis.

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