OEM Ford 6.0 Powerstroke STC Fitting Update Kit – 4C3Z-9B246-F
Eliminate one of the most common failure points in the 2004.5-2007 Ford 6.0L Powerstroke with the Genuine OEM Ford STC (Snap-To-Connect) HPOP Fitting Update Kit, part number 4C3Z-9B246-F.
The factory-installed STC fitting used to connect the High Pressure Oil Pump (HPOP) to the branch tube is known for developing leaks, seal failures, and even complete separation under operating conditions. When this occurs, drivers often experience hard starts, hot no-start conditions, extended cranking, sudden stalling, loss of ICP pressure, or complete engine shutdown. Ford developed the updated STC fitting design with an added support bracket to eliminate movement between the branch tube and connector, significantly improving long-term reliability.
Whether you're repairing a failed STC fitting or performing preventative maintenance while the HPOP is exposed, this OEM update kit is considered one of the most important reliability upgrades for late-model 6.0 Powerstroke engines. Ford and diesel repair specialists commonly recommend replacing the original fitting anytime major engine work is performed around the HPOP, oil cooler, turbocharger, or EGR system.
Common Symptoms of a Failing STC Fitting
- Hot no-start condition
- Extended crank time when engine is warm
- Hard starting after sitting overnight
- Sudden engine stall while driving
- Low ICP pressure codes
- Injection Control Pressure loss
- Rough startup
- High-pressure oil leaks
- Intermittent no-start complaints
Why Upgrade to the Updated Ford STC Design?
The original two-piece STC connector can flex during engine operation, causing wear to the sealing surfaces and retaining mechanism. Over time, the fitting may leak or separate entirely, resulting in immediate loss of high-pressure oil needed for injector operation. The updated Ford design incorporates a reinforced support bracket and improved fitting configuration that prevents branch tube movement and reduces the risk of future failures.
Kit Contents
- Support Bracket
- Hydraulic Pump Seal Kit
- Branch Tube Adapter (Male)
- HPOP Adapter Fitting (Female)
- (2) M6 x 35mm Branch Tube Bolts
- (2) M8 x 60mm Pump Bolts
- (1) M8 x 45mm Pump Bolt
Vehicle Fitment
Fits:
- 2004.5 Ford F-250 Super Duty 6.0L Powerstroke
- 2004.5 Ford F-350 Super Duty 6.0L Powerstroke
- 2005 Ford F-250/F-350/F-450/F-550 6.0L Powerstroke
- 2006 Ford F-250/F-350/F-450/F-550 6.0L Powerstroke
- 2007 Ford F-250/F-350/F-450/F-550 6.0L Powerstroke
- 2005 Ford Excursion 6.0L Powerstroke
- Select 2005-2010 E-Series 6.0L Diesel applications
Important: This kit is intended for late-production 2004.5-2007 engines equipped with the STC-style High Pressure Oil Pump. Verify HPOP application before ordering.
Why Buy From SWAG Performance Parts?
- Genuine OEM Ford / Motorcraft Component
- Latest Updated STC Design
- Direct Replacement Fitment
- Fast Shipping
- Trusted Diesel Performance Specialists
Recommended While You're There
When replacing the STC fitting, consider servicing other common 6.0L high-pressure oil system wear items:
- Updated Stand Pipes & Dummy Plugs
- Branch Tube Seals
- HPOP Cover Gasket
- Oil Cooler Kit
- EGR Cooler Upgrades
- Turbo Installation Hardware
- Injector Seal Kits
Addressing these components together can help prevent future high-pressure oil system failures and reduce labor costs.
