SKU: 151-4201 | UPC: 672036003371
ARP Cylinder Head Stud Kit for 1971-1980 Ford Pinto and 1975-1980 Mercury Bobcat 2.0L
This ARP Pro Series cylinder head stud kit (SKU 151-4201) delivers precise clamping force for Ford Pinto and Mercury Bobcat 2.0L engines. It replaces stock bolts with high-strength studs that handle extreme boost and RPM in performance applications. Engine builders choose ARP for consistent head gasket sealing and resistance to fatigue under demanding conditions.
Key Features
- 8740 Chrome Moly Construction: Heat-treated to 190,000 PSI tensile strength for dependable performance in competition engines
- Centerless Ground Studs: Ensures perfect concentricity and straightness so heads and gaskets align effortlessly during assembly
- Post-Heat-Treat Thread Rolling: Provides 2000% greater fatigue strength compared to pre-heat-treat threading methods used by others
- Undercut Design on Shorter Studs: Equalizes stretch across all studs for uniform clamping and compensation during head gasket compression
- Black Oxide Finish: Resists corrosion and promotes smooth installation with ARP thread lubricant
Product Notes
- Made in USA with ARP stamped on each stud for authenticity verification
- Designed for professional engine builds. inspect threads and holes before installation
- Ships in protective packaging to prevent damage
Installation Notes
- Professional installation recommended.
- Clean blind holes thoroughly and apply ARP Ultra-Torque lubricant to threads and washers
- Torque in three steps to ARP specifications: 30 ft-lbs, 60 ft-lbs, then 70-75 ft-lbs for 2.0L Pinto engines
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1971-1980 | Ford | Pinto | 2.0L |
| 1975-1980 | Mercury | Bobcat | 2.0L |
Why Choose ARP?
- Trusted by professional engine builders in all racing categories
- Premium 8740 alloy exceeds aircraft steel ratings for strength
- Exact tolerances from vertical heat treatment and precision grinding
Frequently Asked Questions
-
Q: Which engines does ARP 151-4201 fit?
A: Fits 1971-1980 Ford Pinto 2.0L L4 and 1975-1980 Mercury Bobcat 2.0L L4 engines with stock or performance cylinder heads -
Q: What material and strength rating does this kit have?
A: Constructed from 8740 chrome moly alloy heat-treated to 190,000 PSI with black oxide finish for durability -
Q: What is the warranty and installation process?
A: ARP provides a one-year unlimited mileage warranty. follow ARP torque sequence with proper lube for best results
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Original ARP protective box
- Weight: 2 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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