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Upgraded STC High Pressure Oil Pump Kit - 2005-2010 6.0L Ford Power Stroke Replaces 4C3Z9B246F
End the hard-start headache for good.
If your 6.0L cranks forever before it fires, starts rough after sitting overnight, or has left you stranded with a sudden no-start — the factory STC fitting is almost always the culprit. This snap-to-connect fitting links your high-pressure oil pump to the oil supply branch tube, and over time it leaks or separates under pressure, robbing your injectors of the oil pressure they need to fire.
This update kit fixes it at the source. The revised, bracketed design locks the fitting securely in place under sustained high-pressure operation, restoring proper injector control and dependable starts — hot or cold.
Why it belongs in your truck
- Cures the classic 6.0L symptoms: long cranks, hard hot starts, rough overnight starts, and no-start/stall conditions
- Reinforced bracket design holds firm under pressure where the factory fitting fails
- Restores correct high-pressure oil delivery and injector control
- A direct, bolt-in fix — no cutting, no modifications
- The smart preventative repair to knock out while the pump is already exposed (EGR cooler, oil cooler, or EGR upgrade jobs)
Fitment
Engineered for 2004.5–2007 Ford 6.0L Powerstroke diesel:
- F-250, F-350, F-450, F-550 Super Duty (2005–2007)
- E-350 / E-450 vans (2005–2010)
Replaces OE# 4C3Z-9B246-F. Also crosses to 4C3Z9B246A / D / E, 3C3Z-9H529-A, and 1879930C93.
⚠️ Fits late-build 2004.5+ trucks with the STC-style HPOP fitting only. Not compatible with early 2003–2004 round-pump / J-tube style connections.
INSTALL GUIDE
PACKAGE CONTENTS
VEHICLE FITMENTS
⚠️ PROP 65 WARNING
CALIFORNIA WARNING: Cancer and Reproductive Harm -www.P65Warnings.ca.gov.