Holley Harmonic Balancer Bolt - Chevy Big Block - 12-Point 97-321 weiand All Shorty Headers bolt on

All Shorty Headers bolt on quickly and easily to the factory exhaust system

25 Converter Quantity 1 Finish Stainless Steel Air Tube Adaptable No Material Stainless Steel Series OEM Grade Subtitle Federal / EPA Compliant Title OEM Grade Direct-Fit Outlet Attachment Bolt-On Clamp Included No Type Direct-Fit Hangers Included Yes Gasket Included Yes

0L V8 1975-1981 Chevrolet K10 Cheyenne 350/5

8 V8 1981 - 1986 Ford F-350 351/5

Holley Harmonic Balancer Bolt - Chevy Big Block - 12-Point 97-321 weiand All Shorty Headers bolt onReplacement Harmonic Balancer Bolt with Thick Washer, for Chevy Big Block 396 454 with Holley Mid Mount Accessory Drive System 20 242 & 20 242BK Replacement harmonic balancer bolt with thick washer for Big Block Chevy Mid Mount Accessory drive system. 12 Point, 1 2" Wrench Size, 1 2" 20 x 2. 500" Under Head Length, Washer diameter 1. 5" x 0. 200" Thick. NOTES: Torque Harmonic Balancer Bolt to 85 ft lbs. Features: 180,000 PSI Rating (Grade 9) Made from