{"product_id":"2011-2016-gm-6-6l-duramax-cast-iron-cylinder-head-one-lml","title":"2011-2016 Gm 6.6L Duramax Cast Iron Cylinder Head Pair LML","description":"The OEM Duramax cast-aluminum cylinder heads fall short over time - the different heat expansion rates between cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing and eventually blown head gaskets. The aluminum cylinder heads are also prone to warping\n melting and\/or cracking in high-performance applications where excessive heat is introduced.","brand":"PPE Pacific Performance Engineering","offers":[{"title":"Default","offer_id":49500191457520,"sku":"duramax-cast-iron-cylinder-head-one-lml-2011-2016-gm-6-6l","price":2595.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.hitechclassics.com\/products\/2011-2016-gm-6-6l-duramax-cast-iron-cylinder-head-one-lml","provider":"Hi Tech Classics","version":"1.0","type":"link"}