SKU: 206-4204 | UPC: 672036007997
ARP Cylinder Head Studs for BMC A Series, 11 Studs, 12-pt Nuts – Fits 1959-2000 Mini, Sprite, Midget
ARP 206-4204 cylinder head studs secure cylinder heads on BMC A-Series engines found in classic Minis, Austin Healey Sprites, and MG Midgets. This kit includes 11 studs with 12-point nuts made from 8740 Chrome Moly alloy for consistent clamping force under high-performance conditions. Professional engine builders choose these studs for their strength in competition applications from 1959-2000 models.
Key Features
- 8740 Chrome Moly Construction: Heat-treated to 190,000 PSI tensile strength with full penetration for durability in high-stress racing environments
- Post-Heat-Treat Thread Rolling: Delivers 2000% higher fatigue strength compared to pre-heat-treat threading for long-term reliability
- Centerless Ground Studs: Ensures concentricity so cylinder heads and gaskets align perfectly without binding
- Undercut Design on Shorter Studs: Equalizes stretch across all studs for uniform clamping and resistance to head gasket failure
- Black Oxide Finish: Provides corrosion protection with 12-point nuts for precise wrench engagement
Product Notes
- Studs stamped with ARP logo confirm authenticity and quality control
- Apply ARP Ultra-Torque lubricant during installation for accurate torque values
- Packaged in protective sleeves. weighs 1.1 lbs with box dimensions 6 x 4 x 1 inches
Installation Notes
- Professional installation recommended.
- Torque to ARP specifications using calibrated torque wrench and moly-based lubricant
- Compatible with stock BMC A-Series heads, performance ported heads, and copper head gaskets
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1959-2000 | Austin/Morris/Mini | Mini | Cooper, Cooper S, Standard (A-Series 848-1275cc) |
| 1958-1971 | Austin Healey | Sprite | Mk I, Mk II, Mk III, Mk IV (948-1275cc) |
| 1961-1979 | MG | Midget | Mk I, Mk II, Mk III (948-1275cc) |
| 1962-1971 | MG | 1100/1300 | All A-Series variants |
Why Choose ARP?
- Every top professional engine builder uses ARP Pro Series for competition engines
- Premium 8740 alloy exceeds aircraft steel ratings with precise heat treatment
- Exacting tolerances from centerless grinding to thread rolling ensure flawless fit
Frequently Asked Questions
- Q: Which BMC A-Series engines does ARP 206-4204 fit?
A: Fits all 11-stud A-Series cylinder heads on 848cc, 998cc, 1098cc, and 1275cc engines in Mini, Sprite, Midget, and similar from 1959-2000 - Q: What is the material and strength rating?
A: Made from 8740 Chrome Moly alloy heat-treated to 190,000 PSI tensile strength with black oxide finish. includes matching 12-pt nuts - Q: What is the ARP warranty and installation advice?
A: ARP Pro Series studs carry a lifetime warranty against failure. use ARP lube and follow torque specs for best results
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Secure retail box measuring 6 x 4 x 1 inches
- Weight: 1.1 lbs
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