Harmonic Balancer Bolt Chevy Big Block 12-Point Replacement Harmonic Balancer Bolt with Thick Washer, for Chevy Big Block 396-454 with Mid-Mount Accessory Drive System 20-242 & 20-242BK Holley

Replacement harmonic balancer bolt with thick washer for Big Block Chevy Mid-Mount Accessory drive system. 12-Point, 1/2 inch Wrench Size, 1/2 inch-20 x 2.500 inch Under Head Length, Washer diameter 1.5 inch x 0.200 inch Thick.

Features and Benefits:

• 180,000 PSI Rating (Grade 9) Made from Steel Black E-Coat Finish 1/2 inch Wrench Size 12-Point Bolt Head Large Diameter Extra Thick Washer - .200 inch Thick x 1.5 inch Diameter Reusable - Not Torque-To-Yield

Associated Comments:

• Torque Harmonic Balancer Bolt to 85 feet/lbs.

Details:

• Bolt Grade: 10.9
• Color: Black
• Engine: Chevy Big Block V8
• Finish: Black E-Coat
• Grade Type: Performance
• Head Drive Type: 12 Point
• Head Style: 12-Point
• Length: 2.5 Inch
• Material: Steel
• PSI Rating: 180,000
• Reusable: Yes
• Thread Diameter: 1/2 Inch
• Thread Pitch: 20.0
• Thread Size: 1/2/2020
• Under Head Length: 2.500 Inch
• Universal Or Specific Fit: Universal
• Washer Size: .200 Inch Thick x 1.5 Inch Diameter
• Washer(s) Included: Yes
• Wrench Size: 1/2 Inch