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S-197 Mustangs
High Mileage 05-09 GT Reliability?
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<blockquote data-quote="BMR Tech 2" data-source="post: 15301632" data-attributes="member: 174721"><p>Looking at the coil pack boot or coil pack engineering number should tell you. 3L3E coils are the old style, 8L3E are the newer style. That being said, you may want to look at the boot instead. Brown boots are indicative of newer plugs, black boots are older plugs. The only reason I suggest that is because the coil packs themselves can be used on any 05-10 4.6, as long as the correct boots are used. For example, I swapped to the newer style heads on my car and reused my early style coils. I just picked up 8 new brown boots and I was on my way!</p></blockquote><p></p>
[QUOTE="BMR Tech 2, post: 15301632, member: 174721"] Looking at the coil pack boot or coil pack engineering number should tell you. 3L3E coils are the old style, 8L3E are the newer style. That being said, you may want to look at the boot instead. Brown boots are indicative of newer plugs, black boots are older plugs. The only reason I suggest that is because the coil packs themselves can be used on any 05-10 4.6, as long as the correct boots are used. For example, I swapped to the newer style heads on my car and reused my early style coils. I just picked up 8 new brown boots and I was on my way! [/QUOTE]
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High Mileage 05-09 GT Reliability?
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