ARP M12 x 1.25 12-Point Nut – 8740 Chrome Moly – Black Oxide – 1 Piece – 300-8307

ARP M12 x 1.25 12-Point Replacement Nut

Replace a missing or damaged performance fastener with the ARP 300-8307 M12 x 1.25 12-point nut.

Manufactured from high-strength 8740 chrome-moly steel, this nut features a black oxide finish and a compact 12-point design. It uses a 14mm 12-point socket and is suited for compatible ARP studs or other properly matched M12 x 1.25 right-hand-thread applications.

This is a universal replacement fastener rather than a vehicle-specific kit. Verify the stud thread, nut dimensions, material requirements, and application before ordering.

This listing includes one nut.

Product Features

• ARP replacement 12-point nut
• M12 x 1.25 right-hand thread
• High-strength 8740 chrome-moly construction
• Black oxide finish
• Compact 12-point head design
• Uses a 14mm 12-point socket
• Suitable for compatible engine and performance-fastener applications
• Sold individually
• ARP part number 300-8307

Product Specifications

• Manufacturer: ARP
• Part Number: 300-8307
• Product Type: Replacement fastener nut
• Thread Size: M12 x 1.25
• Thread Direction: Right hand
• Nut Style: 12 point
• Material: 8740 chrome moly
• Finish: Black oxide
• Socket Size: 14mm 12 point
• Head Height: 12.8mm / 0.504 inch
• Collar Diameter: 20.9mm / 0.823 inch
• Self-Locking: No
• Washer Included: No
• Quantity: One nut

Quantity Notice

This product includes one M12 x 1.25 nut only. Order the quantity needed for your application.

Compatibility Note

Thread size alone does not guarantee compatibility. Confirm the required nut dimensions, seat design, material, washer arrangement, and ARP fastener application before installation.

Installation Note

Clean and inspect the stud threads before assembly. Use the lubricant and torque procedure specified for the complete fastener application. Do not apply a generic torque value based only on the M12 x 1.25 thread size.