Will app5144 Autolite double Platinum spark plugs work on my truck?

Tiny
GREGORYWH1948
  • MEMBER
  • 2001 FORD RANGER
  • 4.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 195,000 MILES
Will app5144 Autolite double Platinum work on my pick up? And what is plug gap?
Sunday, March 21st, 2021 AT 8:41 PM

7 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,577 POSTS
They would work fine as they are the OE plug design, the plug gap is.061" but most platinum plugs come preset to the latest number which is.054" They get torqued to 13 ft. Lb. To verify the plug gap you can also look at the sticker that shows the emission information under the hood, however as I said many double platinum plugs are pre gapped.
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Sunday, March 21st, 2021 AT 9:01 PM
Tiny
GREGORYWH1948
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Thanks very helpful.
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Sunday, March 21st, 2021 AT 9:40 PM
Tiny
STEVE W.
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You are welcome.
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Monday, March 22nd, 2021 AT 6:56 AM
Tiny
GREGORYWH1948
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  • 4 POSTS
  • 2001 FORD RANGER
  • 4.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 195,000 MILES
I have a set of Autolite APP5144 DBL Platinum plugs. It looks like I'll have to reset gap. Is there a special gap tool or should leave them be?
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Monday, March 22nd, 2021 AT 11:42 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
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Good morning,

The double Platinum's do not require gapping at all.

https://www.2carpros.com/articles/how-to-change-spark-plugs

The proper gap is below for you for the correct plugs for the engine.

1.57 - 1.73 mm (0.061 - 0.068 in)

Roy
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Monday, March 22nd, 2021 AT 11:42 AM (Merged)
Tiny
GREGORYWH1948
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Thank you Roy, that cleared things up, very helpful.
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Monday, March 22nd, 2021 AT 1:49 PM
Tiny
STEVE W.
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Check the gap on those plugs you have and you will find they are gapped at.054". That is the current specification for them and they don't need to be reset.
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Monday, March 22nd, 2021 AT 3:29 PM

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