SKU: 156-5202 | UPC: 672036037802
ARP Main Stud Kit for Ford 4.6L/5.4L Late Cast Iron Block Side Bolts M9 (except Boss 5.0L) 1997-2010
ARP Main Stud Kit 156-5202 delivers reliable main cap fastening for Ford 4.6L and 5.4L Modular engines in late cast iron blocks with side bolts and M9 caps used in F-150 F-250 Expedition E-Series and Navigator. It prevents main cap walk and fretting while safeguarding block threads during high-horsepower builds. Kits include all necessary hardware for direct replacement and secure operation.
Key Features
- 8740 Chrome Moly Construction: Heat-treated in-house to 190000 PSI tensile strength for extreme durability under boost and high RPM
- Precision Rolled J-Form Threads: Formed after heat treatment creating threads 2000% stronger than off-the-shelf cut threads to resist fatigue
- Complete Kit Contents: Includes hardened parallel-ground washers and premium nuts for even load distribution and easy assembly
- Windage Tray Compatibility: Select studs feature standoff design with serrated lock nuts to secure windage trays firmly in place
- Black Oxide Finish: Provides corrosion resistance and smooth installation in engine environments
Product Notes
- Confirm late cast iron block with side bolts before ordering ARP lists this for 1997-up applications
- Apply ARP thread lubricant during install for accurate torque values
- Kit weighs 1.85 lbs ships in compact protective box
Installation Notes
- Professional installation recommended.
- Clean block threads thoroughly and chase with tap if needed
- Torque studs to ARP specs using moly or Ultra-Torque lube includes windage tray standoffs where equipped
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1997-2003 | Ford | F-150 | 4.6L V8 5.4L V8 All |
| 1997-2003 | Ford | Expedition | 4.6L V8 5.4L V8 All |
| 1999-2004 | Ford | E-150 Econoline | 5.4L V8 All |
| 1999-2004 | Ford | E-250 Econoline | 5.4L V8 All |
| 1999-2004 | Ford | E-350 Econoline | 5.4L V8 All |
| 2004-2008 | Ford | F-150 Heritage | 5.4L V8 All |
| 2003-2006 | Ford | Expedition | 5.4L V8 All |
| 1998-2004 | Lincoln | Navigator | 5.4L V8 All |
Why Choose ARP?
- Decades of leadership in racing fasteners trusted by engine builders worldwide
- 8740 steel construction with in-house heat treatment for consistent strength
- Precision rolled threads and USA manufacturing ensure exact fit and longevity
Frequently Asked Questions
- Q: Will this kit fit early cast iron or aluminum block Modular engines?
A: No ARP 156-5202 is specific to late cast iron blocks with side bolts and M9 caps use 156-5201 for early blocks - Q: What makes these studs stronger than OEM bolts?
A: 8740 chromoly at 190000 PSI with rolled J-form threads after heat treat provides 2000% greater thread strength and resists stretching - Q: Does ARP provide a warranty on this kit?
A: Yes limited lifetime warranty against defects in materials or workmanship when installed and torqued per ARP instructions
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Original ARP kit box 11 x 8 x 2 inches
- Weight: 1.85 lbs
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