{"product_id":"holley-harmonic-balancer-bolt-chevy-big-block-12-point-97-321","title":"Holley Harmonic Balancer Bolt - Chevy Big Block - 12-Point - 97-321","description":"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.\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e180,000 PSI Rating (Grade 9)\u003c\/li\u003e\n\u003cli\u003eMade from Steel\u003c\/li\u003e\n\u003cli\u003eBlack E-Coat Finish\u003c\/li\u003e\n\u003cli\u003e1\/2\" Wrench Size\u003c\/li\u003e\n\u003cli\u003e12-Point Bolt Head\u003c\/li\u003e\n\u003cli\u003eLarge Diameter Extra Thick Washer - .200\" Thick x 1.5\" Diameter\u003c\/li\u003e\n\u003cli\u003eReusable - Not Torque-To-Yield\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Details:\u003c\/strong\u003e Replacement Harmonic Balancer Bolt with Thick Washer, for Chevy Big Block 396-454 with Holley Mid-Mount Accessory Drive System 20-242 \u0026amp; 20-242BK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt Grade:\u003c\/strong\u003e 10.9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e Chevy Big Block V8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black E-Coat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade Type:\u003c\/strong\u003e Performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Drive Type:\u003c\/strong\u003e 12 Point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Style:\u003c\/strong\u003e 12-Point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 2.5 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Engine Harmonic Balancer Bolt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Harmonic Balancer Bolts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePSI Rating:\u003c\/strong\u003e 180,000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Diameter:\u003c\/strong\u003e 1\/2 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Pitch:\u003c\/strong\u003e 20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 1\/2-20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnder Head Length:\u003c\/strong\u003e 2.500\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Or Specific Fit:\u003c\/strong\u003e Universal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWasher Size:\u003c\/strong\u003e .200\" Thick x 1.5\" Diameter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWasher(s) Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrench Size:\u003c\/strong\u003e 1\/2\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes:\u003c\/h3\u003e\n\u003cp\u003eTorque Harmonic Balancer Bolt to 85 ft\/lbs.\u003c\/p\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":49714892177646,"sku":"HLY-97-321","price":20.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/9110\/6798\/files\/ab5fad479df72f83e9cb98895970d372605ea281.jpg?v=1791564109","url":"https:\/\/elmosspeedshop.com\/products\/holley-harmonic-balancer-bolt-chevy-big-block-12-point-97-321","provider":"Elmo's Speed Shop","version":"1.0","type":"link"}