ARP M12 x 1.50 x 25 Hex Black Oxide Bolts (5/pkg)

SKU: 664-1001 | UPC: 672036039462

ARP M12 x 1.50 x 25 Hex Black Oxide Bolts (5/pkg)

Pack of 5 ARP M12 x 1.50 x 25mm hex head black oxide bolts designed for automotive performance hardware. These fasteners provide consistent clamp load and durability in engine applications like manifolds, valve covers, and brackets on imports such as Honda, Nissan, Subaru, and Toyota performance engines. Built for street, strip, and track use with precision engineering.

Key Features

• Genuine ARP Construction: Forged 8740 chromoly steel heat treated to 200,000 PSI tensile strength for dependable clamping
• Precision-Rolled Threads: After heat treatment for full thread strength, deeper engagement, and precise torque retention
• Hex Head Design: Standard 17mm hex for easy wrench access during tight engine installs
• Black Oxide Finish: Corrosion protection and lower friction for repeated assembly in oily environments
• 25mm Under Head Length: Matches common OEM replacements in valve train, intake, and accessory mounts

Product Notes

• Inspect hole threads for damage before install to ensure proper fit
• Store in dry area to maintain finish integrity
• Compact packaging protects during transit

Installation Notes

• Professional installation recommended.
• Clean threads and use ARP Ultra-Torque lubricant for accurate torque
• Follow ARP torque specs and sequence, re-torque after heat cycles

This Part Fits

Year	Make	Model	Submodel
1986-2006	Honda	Acura Integra, Civic	Performance B/D/F/H/K-Series Engines
1989-2020	Nissan	240SX, 350Z, Silvia	SR20DET, VQ35DE Hardware
1992-2021	Subaru	Impreza WRX, STI	EJ20, EJ25 Engine Accessories
1993-2008	Toyota	Supra, MR2, Celica	2JZ-GTE, 3S-GTE Manifolds/Brackets

Why Choose ARP?

• Trusted by NHRA and NASCAR race teams for critical fasteners
• 8740 alloy steel exceeds OEM strength ratings
• Thread rolling and CNC hex forming ensure concentricity

Frequently Asked Questions

• Q: What engines or applications do these bolts fit?
  A: M12 x 1.50 x 25mm size fits valve covers, intake manifolds, throttle bodies, and brackets on performance Honda B/K-Series, Nissan SR/VQ, Subaru EJ, Toyota JZ/S engines.
• Q: What material and strength rating?
  A: 8740 chromoly steel construction, quenched and tempered to 200,000 PSI minimum tensile strength.
• Q: What is the warranty and torque procedure?
  A: ARP warranty covers manufacturing defects. torque with ARP lube to published specs in sequence, re-check after 500 miles.

Shipping & Handling

• Method: UPS Ground or USPS Priority
• Availability: In stock – ships same or next business day
• Packaging: Plastic bag in 4 x 3 x 1 inch sleeve
• Weight: 0.15 lbs