{"product_id":"3-8-rocker-arm-nut-polylock-short-endurance-series-scorpion-racing-products","title":"3\/8 Rocker Arm Nut Polylock Short Endurance Series Scorpion Racing Products","description":"\u003cp\u003ePolylock Endurance Series - Scorpion Racing Products 3\/8 Endurance Series Polylock - Short Rocker Arm Nut\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh performance, hardened steel\u003c\/li\u003e\n\u003cli\u003eMade from 4140 machined steel with a black oxide coating for surface protection\u003c\/li\u003e\n\u003cli\u003eOverall Length 1.050 inch\u003c\/li\u003e\n\u003cli\u003eOutside Diameter .600 inch\u003c\/li\u003e\n\u003cli\u003e4 piece\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA Polylock is an adjustable rocker arm nut. They are used with Stud Mount Rocker Arms.\u003c\/p\u003e\n\u003cp\u003eHow do they work?\u003cbr\u003eA polylock features a threaded body and a set screw.\u003cbr\u003eThe body screws over the stud and holds the rocker arm in place. Then, the set screw is tightened down against the stud. This locks the body in place.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy would I need them?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePolylocks make adjusting you valvetrain much easier. They are useful when Setting Preload on hydraulic lifters. They are required to Set Valve Lash on solid lifters.\u003c\/p\u003e\n\u003cp\u003ePolylocks also come in various lengths. The longer body sticks up above the rockers to attach a Stud Girdle\u003c\/p\u003e\n","brand":"Scorpion Racing","offers":[{"title":"Default Title","offer_id":44405343486003,"sku":"SCPPL38SH-4-GRKT","price":16.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7889\/7971\/files\/SCPPL38SH-4-GRKT.jpg?v=1780557096","url":"https:\/\/scorpionracingproducts.com\/products\/3-8-rocker-arm-nut-polylock-short-endurance-series-scorpion-racing-products","provider":"Scorpion Racing","version":"1.0","type":"link"}