1997 - 2003 F-150

Which Motorcraft Injector is the correct one?!?!?

Old Dec 27, 2025 | 05:50 PM
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Which Motorcraft Injector is the correct one?!?!?

2001 F150, 5.4 Triton, 147k miles
I need to replace an injector on my truck and was going to use Motorcraft parts. My dilemma is which one to use as two diffent ones (CM5255 and CM5256) are called out on RockAuto, the Motorcraft website, etc. Here's the details.

Injectors on the truck have yellow tops.

The CM5255 injector has a pink top. The description in RockAuto says "GAS; Color: Yellow; Color: Gold". This is also the most common used in a variety of Ford Products.
The CM5256 injector has a green top. The description in RockAuto says "Thunderbolt", whatever that is.

My question is which one is the correct one? I'm betting on CM5255 with the pink top but would appreciate any further information about which one before I screw something up.

Thanks in advance,
Rob
 
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Old Dec 28, 2025 | 08:25 PM
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From: missing Texas...
Originally Posted by robroten
2001 F150, 5.4 Triton, 147k miles
I need to replace an injector on my truck and was going to use Motorcraft parts. My dilemma is which one to use as two diffent ones (CM5255 and CM5256) are called out on RockAuto, the Motorcraft website, etc. Here's the details.

Injectors on the truck have yellow tops.

The CM5255 injector has a pink top. The description in RockAuto says "GAS; Color: Yellow; Color: Gold". This is also the most common used in a variety of Ford Products.
The CM5256 injector has a green top. The description in RockAuto says "Thunderbolt", whatever that is.

My question is which one is the correct one? I'm betting on CM5255 with the pink top but would appreciate any further information about which one before I screw something up.

Thanks in advance,
Rob

you need a 19# injector

I used ones off of an ‘04 Expedition on a flip truck a long time ago, they did better due to more holes at the bottom (so get whichever one matches what you have if you’re not replacing all 8)
 
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