The Bosch 0280158117 (Bosch 62642)
These are the injectors ProCharger includes in a lot of their 5.0 kits.
They are indeed the older GT500 injectors used on the 2007–2012 5.4L supercharged cars.
They are EV6/EV14 short-body injectors (often called “compact” EV14s).
Their overall height from O-ring to O-ring is about 48 mm versus roughly 60 mm for a long-body EV14.
Because of that shorter length, ProCharger supplies fuel rail spacers in their kits so the rails sit lower and seal correctly on the shorter injectors.
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The 2020+ GT500 injectors (KR3Z-9F593-A / M-9593-M55GT)
These are EV14 long-body injectors, same physical dimensions as the OEM Coyote 5.0 injectors (11-14, 15-17, etc.).
O-ring to O-ring height is right around 60 mm, and they use the same USCAR connector and upper/lower O-ring sizing.
They drop straight into your factory Coyote fuel rails with the stock rail standoffs — no spacers required or desired.
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So, putting it together:
Your ProCharger spacers were only necessary because of the shorter Bosch injectors.
If you’re switching to the 2020+ GT500 injectors, you’ll need to remove the ProCharger-supplied spacers and reinstall the OEM-height rail standoffs (or simply bolt the rails directly in their original position if your manifold uses built-in bosses).
This will return the rail height to factory spec and give the long-body GT500 injectors the proper seat depth in both the manifold and the rail.
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Quick physical check
When you install the GT500 injectors:
The lower O-ring should sit just below the top of the injector bore.
The upper O-ring should engage the rail without compressing or forcing the injector off-center.
The fuel rail bolts should snug down with the injectors resting evenly — no preload or tilt.
If you feel any need to “pull” the rail down to make contact, stop and verify height; that’s a sign you still have spacers in the stack.
Therefore:
The Bosch 0280158117 injectors in your ProCharger kit are short-body EV14s.
The 2020+ GT500 55 lb/hr injectors are long-body EV14s — the same length as your stock 5.0 injectors.
So yes, you’ll want to remove the ProCharger spacers and return to OEM fuel rail height when you install the GT500 injectors.
IMO, Procharger has had [plenty] of time to address this issue and get some damned tuning data for the injectors that come with the kit or go to a better injector. But.... That is another story.
