Spark Plug ?

[bereta1]

I have a 2016 Ram 1500 5.7 Hemi. Just purchased a set of NGK plugs LZFR5C1-11 to replace the oem SP143877AB. Just checking to see if they are the right ones.

 

[QwikKota]

Yes. Those are the same as NGK 92145. NGK sells the plugs to Mopar who add their logo. I would not mess with the gap, just install them as is. They are pre-gapped.

 

[bereta1]

I was told they were, just making sure. Thank

 

[Wild one]

I was told they were, just making sure. Thank

Hopefully you didn't buy them off Amazon or Ebay,if you did return them and buy from Rock Auto / a brick and mortar auto parts shop or the dealer.If you bought off Amazon or Ebay,they're fake/knock off NGKs and could cause you issues,especially if the porcellin or tip exit the plug and get jammed under a valve

 

[BenchTest]

*always, always check gap. There are countless people who have had "pre-gapped" plugs way out of spec, fresh out of the box. Always check.

 

[EdGs]

*always, always check gap. There are countless people who have had "pre-gapped" plugs way out of spec, fresh out of the box. Always check.

The electrodes are teeny-tiny on these, use extra care when checking.

 

[QwikKota]

*always, always check gap. There are countless people who have had "pre-gapped" plugs way out of spec, fresh out of the box. Always check.

There are plenty of people testing plugs that have bent electrodes or large gaps and they still work fine. It's not worth the risk damaging the center electrode or the porcelain insulator. A full set of plugs for the Hemi is quite expensive, IMO.

 

[Wild one]

How to Gap Iridium Spark Plugs

Who says you can't gap iridium? You just need the right tools!Please keep in mind that I'm not a professional mechanic and no video can replace proper experi...

www.youtube.com

 

[QwikKota]

To properly check the gap you have to force a tool (feeler gauge, wire gauge, etc.) between the iridium plated electrode and the ground electrode. That can cause damage. If you are just floating a tool in there and not touching the center electrode, what is the point? You are just guessing with that method.

 

[KenR 955]

To properly check the gap you have to force a tool (feeler gauge, wire gauge, etc.) between the iridium plated electrode and the ground electrode. That can cause damage. If you are just floating a tool in there and not touching the center electrode, what is the point? You are just guessing with that method.

Negative Ghostrider.
Using a gapping tool you adjust the gap by lifting the ground arm from the point where it curves from the side of the plug where it is attached to the side of the plug.
I will find a video to attach in a minute.

How to Gap a Spark Plug

How to correctly gap a spark plug. This is a fast and easy video on how to gap a spark plug and spark plug gap adjustment. All plugs have to be checked and a...

www.youtube.com

Go to the 1:05 minute mark.

 

[QwikKota]

I am talking about measuring the gap. If you are not touching the center electrode you are not getting an accurate measurement. I would just check them over for any damage and way too small or way too large of a gap by eyeballing them. Install as is or return if they look way off.

 

[KenR 955]

Got it.

 

[RamDiver]

I am talking about measuring the gap. If you are not touching the center electrode you are not getting an accurate measurement. I would just check them over for any damage and way too small or way too large of a gap by eyeballing them. Install as is or return if they look way off.

With that kind of logic, why even bother with the P/N?

That is very bad advice.

I'd sooner break a plug or 2 than use the wrong gap in my Hemi but gapping plugs is not rocket science.

If one is inexperienced, take the old plugs and test your gapping skills before touching the new ones.

If the new plugs are perfectly gapped, there will be next to no stress on the surfaces to drop a gauge in the space.

.

 

[turkeybird56]

*always, always check gap. There are countless people who have had "pre-gapped" plugs way out of spec, fresh out of the box. Always check.

DITTO 100%%%%%%%%%%%% ref check gap. Only takes a few seconds to verify gap. Cause even (1) bad one in a group of 16 is no bueno.

 

[Sherman Bird]

I have a 2016 Ram 1500 5.7 Hemi. Just purchased a set of NGK plugs LZFR5C1-11 to replace the oem SP143877AB. Just checking to see if they are the right ones.

It all depends on where you bought them. Many on-line places sell counterfeit parts, and this is true of NGK spark plugs, as well.

 

[turkeybird56]

With that kind of logic, why even bother with the P/N?

You're providing bad advice.

I'd sooner break a plug or 2 than use the wrong gap in my Hemi but gapping plugs is not rocket science. If one is inexperienced, take the old plugs and test your gapping skills before touching the new ones.

If the new plugs are perfectly gapped, there will be next to no stress on the surfaces to drop a gauge in the space. WTF Man?

.

^^^^^ DITTO ^^^^^.

Sounds like the joke a moola guy from behind the parts counter. Heard a few of them and their BS at the auto store one day, and I just about broke out laughing. I am no mechanic, but turned a lot of wrenches when I was young, to my Mother's angst.

Heck, I check the gap before putting plugs in my lawn mower. Just saying.

ALL IMHO.

 

[bereta1]

DITTO 100%%%%%%%%%%%% ref check gap. Only takes a few seconds to verify gap. Cause even (1) bad one in a group of 16 is no bueno.

It all depends on where you bought them. Many on-line places sell counterfeit parts, and this is true of NGK spark plugs, as well.

Mine came from Rock Auto. Just had mine verified by NGK. Sent pics to rep to authenticate. All good thanks

 

[BenchTest]

There are plenty of people testing plugs that have bent electrodes or large gaps and they still work fine. It's not worth the risk damaging the center electrode or the porcelain insulator. A full set of plugs for the Hemi is quite expensive, IMO.

There is a difference between CHECKING gap and damaging the electrodes trying to adjust the gap... If the plug doesn't meet spec, exchange it with the retailer. Gap exists for a reason.

 

[BenchTest]

To properly check the gap you have to force a tool (feeler gauge, wire gauge, etc.) between the iridium plated electrode and the ground electrode. That can cause damage. If you are just floating a tool in there and not touching the center electrode, what is the point? You are just guessing with that method.

I replied to your prior comment, but after reading this, it's clear you don't know how to use the tools required to check gap. There are Youtube videos that explain how...

 

[BenchTest]

I am talking about measuring the gap. If you are not touching the center electrode you are not getting an accurate measurement. I would just check them over for any damage and way too small or way too large of a gap by eyeballing them. Install as is or return if they look way off.

Eyeballing them? Got it. Do you use ugga duggas when tightening your lug nuts as well? 3 or 4 ugga duggas for you? I prefer 4 just to make sure. If it's Sunday, I use 5 ugga duggas. Smdh...

The electrodes aren't made out of crystalized fairy tears and crumble if you look at them. They will tolerate a feeler gauge or calibrated wire passing over them without any damage. It's almost like they are designed for that or something... Just don't be an ignorant wrench when you're doing it. Use the necessary cautions and all will be good. Again, check out Youtube sometime. They have quite the selection of videos.