{"product_id":"crankcase-housing-threaded-pin-193mm-928-1978-1986-copy","title":"Cylinder Head Hexagon Bolt - M12X1.5X180 - 928 | 1983-1991","description":"\u003cp\u003eCylinder Head Hexagon Bolt - M12X1.5X180 For Porsche 928 (1983-1991) Models.\u003c\/p\u003e\n\u003cp\u003eThis heavy-duty cylinder head hexagon bolt is precision-engineered for Porsche 928 engines, meeting exacting specifications with M12x1.5x180 dimensions. Manufactured from premium alloy steel, it withstands the extreme clamping forces and thermal cycling inherent to high-performance engine operation. The precisely calibrated thread pitch ensures consistent torque application and prevents bolt stretch or failure under combustion pressures. Each bolt features a hardened finish that resists corrosion and maintains structural integrity across countless heat cycles. Critical for cylinder head assembly, gasket sealing, and engine reliability—this OEM-equivalent fastener is indispensable for any 928 rebuild or restoration. Choose quality that matches your Porsche's legendary engineering standards.\u003c\/p\u003e","brand":"Genuine Porsche","offers":[{"title":"Default Title","offer_id":41186125807674,"sku":"928-101-231-04","price":40.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/4846\/2650\/files\/Cylinder-Head-Hexagon-Bolt-M12X1-5X180-928-1983-19.png?v=1768498565","url":"https:\/\/sierramadrecollection.com\/products\/crankcase-housing-threaded-pin-193mm-928-1978-1986-copy","provider":"Sierra Madre Collection","version":"1.0","type":"link"}