SKU: 131-4001 | UPC: 672036001520
ARP Cylinder Head Stud Kit for 1977-1993 Chevy 4-Cylinder Hex
ARP 131-4001 Cylinder Head Stud Kit delivers reliable clamping force for 1977-1993 Chevrolet 4-cylinder Iron Duke engines found in models like Cavalier, Citation, Celebrity and S10. These hex head studs use premium 8740 chromoly construction to handle high-performance demands and resist head gasket failures. Precision processes ensure heads seat perfectly every time.
Key Features
- 8740 Chromoly Material: Heat-treated to 190,000 PSI tensile strength for dependable performance under extreme cylinder pressures
- Centerless Ground: Ensures concentricity and straightness so cylinder heads and gaskets align without binding
- Post-Heat-Treat Thread Rolling: Provides 2000% greater fatigue resistance compared to pre-heat-treat threading
- Undercut Studs: Equalizes stretch on shorter studs for uniform clamping that accounts for gasket compression
- Black Oxide Finish: Made in USA with ARP stamping on each stud to confirm authenticity and corrosion resistance
Product Notes
- Use ARP thread lubricant for accurate torque values during installation
- Inspect studs for damage before reuse in performance applications
- Compact kit includes studs, washers and instructions
Installation Notes
- Professional installation recommended.
- Apply ARP Ultra-Torque assembly lube to stud threads and hardened washers
- Torque in sequence to ARP specs: 65 ft-lbs for 8740 studs with lube
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1980-1985 | Chevrolet | Citation | 2.5L L4 |
| 1982-1988 | Chevrolet | Cavalier | 2.5L L4 |
| 1982-1985 | Chevrolet | Celebrity | 2.5L L4 |
| 1983-1990 | Chevrolet | S10 Pickup | 2.5L L4 |
| 1985-1990 | Chevrolet | Astro | 2.5L L4 |
| 1986-1988 | Chevrolet | Spectrum | 1.5L L4 |
Why Choose ARP?
- Relied on by professional engine builders for competition engines
- Vertical rack heat treatment for full penetration and consistency
- Thread rolled and ground to exact tolerances for flawless fit
Frequently Asked Questions
- Q: What Chevy engines does ARP 131-4001 fit?
A: Designed for 1977-1993 Chevrolet 4-cylinder 2.5L Iron Duke engines in Citation, Cavalier, Celebrity, S10 and similar models with hex head configuration - Q: What material and finish are used?
A: 8740 chrome moly steel with black oxide finish, heat-treated to 190,000 PSI tensile strength - Q: What warranty applies and installation tips?
A: ARP provides warranty against manufacturing defects. always use ARP lube, torque in 3 steps and recheck after heat cycles
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: 1 box, 9in x 6in x 1in
- Weight: 1.65 lbs
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