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  #1  
Old 01-06-2013, 03:11 PM
sinistersix sinistersix is offline
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Default Spark plug question

I did a search but didn't really find my answer. I have a 2011 5.7 sport with 42k miles. I am past due on the plugs but didn't want to get them from the dealer. What is the after market equivalent to the stock plugs and where is the cheapest place to snag some? Also has anyone done a write up how to on our trucks?
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Old 01-06-2013, 05:55 PM
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2011 saw the Ram make a move toward 100k plugs, so there are two part numbers. I don't have the aftermarket equivilent handy but with these numbers, the parts store can cross reference them.

Copper plugs - SPLZFR5C11

Platinum plugs - SPLZFR5B13

A word of caution: Unless you're positive you have the newer coils, I wouldn't try using the platinum plugs since they have a history of melting older coils.
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Old 01-06-2013, 05:59 PM
sinistersix sinistersix is offline
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Im going to assume I have the copper since the manual says to change at 32k. Where online are the cheapest prices on plugs these days?
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Old 01-06-2013, 06:00 PM
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I buy my copper Champions from NAPA auto parts. Pretty cheap, even for 16 plugs. NGK's work ok as well. Online, perhaps rockautoparts.com
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Old 01-06-2013, 06:02 PM
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Quote:
Originally Posted by sinistersix View Post
Im going to assume I have the copper since the manual says to change at 32k. Where online are the cheapest prices on plugs these days?
I would suspect Rock Auto will be your best bet. I've used them several times and have nothing but praise for their service.
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Old 01-06-2013, 06:10 PM
BigDogg795 BigDogg795 is offline
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I don't know if they changed yet again, but on my 2010, Dodge used NGK's...not Champions. Copper plugs, nothing special. For comparison, I also paid $6.20 a piece from my dealer...and I didn't have to wait to get them shipped to me.
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Old 01-06-2013, 06:12 PM
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I have to admit that NGK is my personal preference for plugs in anything with an engine. I have them in my truck, my ATV, my lawnmower and ran them in my race cars back in the day and never had a single one let me down.
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Old 01-06-2013, 06:35 PM
lehre lehre is offline
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Have to agree with RamTech.Used to race boats, never had a plug failure with NGK,can't say the same with Champions. Always use NGK or Bosh plugs when given a choice
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Old 01-07-2013, 01:06 AM
hemiou812 hemiou812 is offline
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I am ready to change plugs myself, just wondering if it will help fuel economy. I have been told to change at 50,000 and I have been told 100,000. I just cant emagine not changing until 100,000 unless told that plugs were meant to go that long.
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Old 01-07-2013, 01:47 AM
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my owners manual reads
NGK LZFR5C11
http://www.google.com/#hl=en&sclient...w=1280&bih=687

this is Champions #
REC14MCC4
http://www.google.com/#hl=en&output=...w=1280&bih=687
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