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SKU: 260-5001 | UPC: 672036044107
ARP Subaru 2.0L FA20 Main Bolt Kit - 2013-2021 BRZ 2015-2021 WRX
The ARP Subaru 2.0L FA20 Main Bolt Kit delivers secure main cap fastening for Subaru FA20 engines in BRZ and WRX models. These studs handle high cylinder pressures and boost levels in tuned setups. Engine builders rely on this kit for consistent clamping during aggressive driving or racing.
Key Features
- 8740 Chromoly Steel: Heat treated to 200,000 PSI tensile strength withstands extreme loads without stretching
- Precision Rolled Threads: Boosts fatigue strength and thread accuracy for repeated torquing
- Complete Hardware Set: Includes 8 main studs 2 thrust studs hard washers and 12-point nuts for full assembly
- Black Oxide Finish: Prevents corrosion and simplifies assembly with reduced friction
- Direct OEM Replacement: Matches factory locations for easy upgrade in stock or built FA20 blocks
Product Notes
- Use ARP Ultra-Torque assembly lubricant for precise torque readings
- Inspect main bores and caps for wear prior to installation
- Packaged in protective ARP box to prevent damage during transit
Installation Notes
- Professional installation recommended.
- Torque main studs to 70 ft-lbs with ARP lube follow included sheet
- Compatible with factory Subaru main caps and girdle
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2021 | Subaru | WRX | All |
| 2013-2020 | Subaru | BRZ | All |
| 2013-2016 | Scion | FR-S | All |
| 2017-2020 | Toyota | 86 | All |
Why Choose ARP?
- ARP fasteners secure engines in NHRA Top Fuel and Pro Stock teams
- Millions of kits installed in street and race engines worldwide
- Made in USA with tight tolerances for perfect FA20 fitment
Frequently Asked Questions
-
Q: Does this fit Subaru WRX STI models?
A: No this kit fits only FA20 2.0L turbo engines STI uses EJ257 or FA24 engines with different mains -
Q: What material and strength rating?
A: Forged 8740 chromoly steel construction heat treated to 200,000 PSI tensile strength -
Q: What warranty coverage?
A: ARP offers lifetime warranty on studs against manufacturing defects when installed per instructions
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective box 6 x 4 x 1 inches
- Weight: 1.65 lbs
Read More
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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