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SKU: 207-3900 | UPC: 672036033781
ARP 94+ Mitsubishi 2.0L 4G63 DOHC Head Bolt Kit
ARP head stud and bolt kit provides consistent clamp load for 1994 and later Mitsubishi 4G63 DOHC engines found in Eclipse GST/GSX, Talon TSi, and Lancer Evolution models. This kit replaces factory bolts with studs that resist stretching under extreme boost and heat. Built for daily drivers and race builds demanding reliable cylinder head sealing.
Key Features
- Genuine ARP Fasteners: Forged from ARP2000 alloy for 220,000 psi tensile strength and fatigue resistance in high-horsepower 4G63 applications
- Stud Design: Minimizes main block thread damage while allowing accurate torque values and easier head removal during rebuilds
- Precision-Rolled Threads: Ensures maximum thread engagement and consistent preload for gasket sealing under boost pressures over 30 psi
- Matched 12-Point Nuts: Hardened steel nuts with wide base prevent distortion and provide secure hold during repeated heat cycles
- Application-Specific Engineering: Tested for 7mm 1.25 pitch threads on 94+ 4G63 DOHC blocks including DSM and Evo 8/9 variants
Product Notes
- Inspect head and block surfaces for flatness before installation to ensure proper sealing
- Use ARP Ultra-Torque lubricant on threads and under nut faces for accurate torque readings
- Ships in protective ARP packaging to prevent thread damage during transit
Installation Notes
- Professional installation recommended.
- Torque to ARP specs: 60 ft-lbs initial plus 110 degree angle for studs on 4G63 DOHC
- Compatible with MLS head gaskets and OEM or aftermarket heads. re-torque after 500 miles
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1994-1998 | Eagle | Talon | TSi |
| 1994 | Mitsubishi | Eclipse | GS |
| 1994-1999 | Mitsubishi | Eclipse | GST |
| 1994-1999 | Mitsubishi | Eclipse | GSX |
| 1996-1999 | Mitsubishi | Eclipse | Spyder GST |
| 1994 | Plymouth | Laser | RS |
| 2003-2006 | Mitsubishi | Lancer Evolution | All |
| 2005-2006 | Mitsubishi | Lancer Evolution | MR |
| 2005-2006 | Mitsubishi | Lancer Evolution | RS |
| 2006 | Mitsubishi | Lancer Evolution | SE |
Why Choose ARP?
- Proven in NHRA Pro Stock and countless 4G63 drag builds for over 40 years
- Every kit exceeds OEM specs with material certification and batch testing
- CNC-machined for exact fit on Mitsubishi 4G63 blocks and heads
Frequently Asked Questions
-
Q: Will this kit fit 1990-1994 DSM 4G63 DOHC engines?
A: Designed for 1994+ 7-bolt pattern. confirm block stamping as earlier 6-bolts use ARP 207-4301 -
Q: What material are the studs made from?
A: ARP2000 chromoly alloy with 220,000 psi strength rating, black oxide finish for corrosion resistance -
Q: Does ARP offer a warranty on this head stud kit?
A: Lifetime warranty against material and manufacturing defects when installed per ARP instructions
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Compact box 2.5 x 6 x 7 inches
- Weight: 1.55 lbs
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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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