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SKU: 663-1002 | UPC: 672036025458
ARP M10 x 1.25 x 25 Hex Black Oxide Bolts
ARP M10 x 1.25 x 25 Hex Black Oxide Bolts provide high-strength fastening for performance automotive applications. Constructed from 8740 chromoly steel with 200,000 PSI tensile strength, these bolts ensure consistent clamp load under extreme conditions. Designed for engine hardware in custom and racing builds, they offer durability for repeated heat cycles and high torque.
Key Features
- 8740 Chromoly Steel: Delivers 200,000 PSI tensile strength to handle high-stress engine environments without failure
- Precision-Rolled Threads: Ensures maximum thread engagement, reduces galling, and allows precise repeatable torque values
- Black Oxide Finish: Resists corrosion while maintaining a professional appearance under hood
- 15mm Hex Head: Accepts standard metric wrenches for quick and secure installation
- 25mm Length: Matches common mounting depths in manifolds, covers, and brackets for exact fit
Product Notes
- Inspect and clean all mating surfaces before assembly to achieve proper torque
- Re-check torque after engine break-in and heat cycles for maintained performance
- LIGHTWEIGHT design at 0.31 lbs ships compactly without added bulk
Installation Notes
- Professional installation recommended.
- Clean threads and use ARP Ultra-Torque lubricant for accurate preload
- Torque to ARP or OEM specs in proper sequence. 25-30 ft-lbs typical depending on application
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Various | Performance Engines | Manifold/Valve Cover Hardware |
| Custom | Import/Domestic | Race Builds | Intake/Exhaust Mounts |
Why Choose ARP?
- ARP fasteners power wins in NHRA, NASCAR, and endurance racing worldwide
- High-strength materials outperform stock hardware in vibration and heat
- Precision manufacturing guarantees consistent performance across thousands of cycles
Frequently Asked Questions
-
Q: What applications do these bolts fit?
A: M10 x 1.25 x 25mm size suits intake/exhaust manifolds, valve covers, brackets in performance engines and custom fabrication -
Q: What material and strength rating?
A: Forged 8740 chromoly steel with black oxide plating, 200,000 PSI tensile and 130,000 PSI yield strength -
Q: What about torque specs and lube?
A: Includes guide. use ARP Ultra-Torque, torque 25-35 ft-lbs dry equivalent depending on thread engagement and application
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Original ARP box, approximately 6 x 4 x 1 inches
- Weight: 0.31 lbs
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