SKU: 256-4301 | UPC: 672036042165
ARP 2011-2017 Ford Coyote 5.0L V8 Head Stud Kit
ARP 256-4301 head stud kit upgrades 2011-2017 Ford Mustang GT and Boss 302 with Coyote 5.0L V8 engines. These studs provide even clamp load under extreme boost and RPM for race-ready cylinder head retention. Built for long-term engine reliability in street and track use.
Key Features
- Genuine ARP Fasteners: 8740 chromoly steel construction with 200,000 PSI tensile strength handles high cylinder pressures without fatigue
- Stud Design: Minimizes main block thread damage while ensuring accurate repeatable torque values across multiple services
- Precision-Rolled Threads: Increases thread engagement by 25 percent over cut threads for maximum holding power and resistance to loosening
- Matched Hardware: Includes 12-point nuts, hardened parallel washers, and lube for complete bolt-on assembly without custom sourcing
- Versatile Application: Proven in boosted naturally aspirated and high-RPM Coyote builds from 2011-2017 models
Product Notes
- Requires ARP Ultra-Torque fastener lubricant on threads and under nut faces for correct preload
- Torque to ARP specifications after full engine warm-up and recheck after 100 miles
- Ships in protective packaging to prevent thread damage
Installation Notes
- Professional installation recommended.
- Chase cylinder head bolt holes with ARP thread chaser tool before install
- Compatible with OEM and aftermarket cylinder heads using 14mm x 2.1 threads
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011-2017 | Ford | Mustang | GT 5.0L Coyote |
| 2013-2014 | Ford | Mustang | Boss 302 5.0L Coyote |
| 2011-2014 | Ford | F-150 | 5.0L Coyote |
| 2015-2017 | Ford | Mustang | GT Premium 5.0L Coyote |
Why Choose ARP?
- ARP fasteners power NHRA Top Fuel and Pro Stock engines worldwide
- Every stud undergoes rigorous heat treatment and thread rolling for consistent performance
- Backed by decades of engineering data from real-world racing applications
Frequently Asked Questions
-
Q: Does this kit fit 2018+ Gen 3 Coyote engines?
A: No this 256-4301 kit is designed for 2011-2017 Gen 1 and Gen 2 Coyote 5.0L use ARP 256-4701 for newer models -
Q: What material are the studs made from?
A: High-tensile 8740 chromoly steel with custom heat treatment rated at 200,000 PSI minimum tensile strength -
Q: What is the ARP warranty policy?
A: Lifetime warranty against manufacturing defects when installed and torqued per ARP instructions
Shipping & Handling
- Method: Free ground shipping on orders over $149
- Availability: In stock - ships same or next business day
- Packaging: Secure retail box measuring 12 x 8 x 3 inches
- Weight: 4.65 lbs
ARP
ARP (Automotive Racing Products) is the world’s premier manufacturer of high-strength engine and driveline fasteners—head studs and bolts, main studs, rod bolts, and more—engineered and manufactured in-house from start to finish for race-proven reliability. With vertically integrated processes that include cold heading, machining, heat-treating, thread rolling after heat treat, and rigorous QA, ARP maintains aerospace-level certifications (ISO 9001 and AS9100) and validates every part for repeatable clamp load and fatigue resistance. Signature alloys such as 8740 chromoly, ARP2000, L19, and Custom Age 625+ deliver ultimate tensile strengths up to the super-alloy range, while ARP Ultra-Torque fastener assembly lubricant helps achieve consistent pre-load during installation. From street performance builds to professional motorsport programs, ARP fasteners provide precise fitment, superior metallurgy, and the durability needed to keep engines together at elevated cylinder pressures and...
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