Click to zoom in
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 Head Studs
ARP head stud kits for internal engine builds are stocked at Black Ops Auto Works. Shop ARP head stud and bolt kits, main stud kits, and rod bolt kits engineered for HEMI, Ford Modular and Coyote, GM LS, Subaru EJ, Honda K and B series, VW/Audi turbo four cylinders, Porsche, BMC, and Renault engines, along with the Ultra-Torque assembly lubricant every kit depends on. Every product is filterable by year, make, model, and engine platform so the correct fastener kit ships the first time. Black Ops Auto Works carries 812 ARP Head Studs SKUs across 8740 chromoly and ARP2000 alloy options. What This Collection Covers ARP head studs replace factory head bolts with precision-machined threaded studs that thread into the block and allow the nut to be torqued concentrically on a stationary fastener, producing more even and repeatable clamping force across the entire head gasket surface than a factory head bolt design. This collection focuses on the internal engine fasteners that hold the ...
View ARP Head Studs Products
Head Components
Cylinder head components and engine internals for performance builds and OE service are stocked at Black Ops Auto Works. Shop complete cylinder heads, head gaskets, head stud and bolt kits, rocker arms, lifters, camshaft and lifter kits, rotating assemblies, and main stud and bolt kits for LS, LT, HEMI 5.7/6.1/6.4, Coyote, Cummins, Powerstroke, VW/Audi turbo, Subaru, Nissan, and import platforms. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 972 Head Components SKUs across component type, engine platform, and bore or gasket specification. What This Collection Covers Head Components groups together the parts that live at and around the cylinder head, the area of the engine most affected by heat, combustion pressure, and clamping load. This includes complete heads, head gaskets, head studs and bolts, rocker arms, lifters, camshaft and lifter kits, main stud and bolt kits, and ro...
View Head Components Products
Head Stud & Bolt Kits
Head Stud and Bolt Kits for LS, Gen III Hemi, Coyote and Ford Modular, Toyota 2JZ, Nissan RB26, Subaru EJ, Honda K-series, Mitsubishi 4G63, VW 1.8T, and Power Stroke applications are stocked at Black Ops Auto Works. Shop ARP head studs, head bolts, L19 studs, Custom Age 625+ studs, Pro Series hardware, cylinder head fasteners, MLS gasket support, and boosted engine hardware for proven street, drag, road course, and high horsepower engine builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 199 head stud and bolt SKUs across the fitments and build levels enthusiasts actually use. What Head Stud and Bolt Kits Cover This collection includes cylinder head stud kits, head bolt kits, nuts, washers, and high-strength fastening solutions for stock rebuilds, boosted street engines, race engines, and diesel performance applications. The correct fastener supports reliable head gasket cl...
View Head Stud & Bolt Kits Products