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Motorcraft Spark Plug advice

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Old May 3, 2023 | 01:43 PM
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Motorcraft Spark Plug advice

Haven't bought plugs in a while.
I find three motorcraft copper plugs that say they are for the 1995 Ford F350 7.5 Trying to determine which one will work the best for me or is the newest version. Thanks for any replies.
Motorcraft SP450X Motorcraft SP450A Motorcraft SP450
 
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Old May 3, 2023 | 04:39 PM
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Originally Posted by sandymane
Haven't bought plugs in a while.
I find three motorcraft copper plugs that say they are for the 1995 Ford F350 7.5 Trying to determine which one will work the best for me or is the newest version. Thanks for any replies.
Motorcraft SP450X Motorcraft SP450A Motorcraft SP450
I was always told motolcraft of auto lite copper plugs.
 
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Old May 3, 2023 | 04:43 PM
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Originally Posted by Ronniewhite
I was always told motolcraft of auto lite copper plugs.
I believe Motorcraft owned Autolite at one point.
 
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Old May 3, 2023 | 07:17 PM
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Does the truck still have the emissions label in the engine compartment? The spark plug number is on the label.
 
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Old May 3, 2023 | 07:54 PM
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[QUOTE=My4Fordtrucks;20838372]Does the truck still have the emissions label in the engine compartment? The spark plug number is on the label.

The original plugs are still in the truck. Paint is still on the plug tips. The Motorcraft number on the plug reads ASF 42 C

SP450 looks to be the replacement for the ASF42C. Thanks
 
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