{"product_id":"industrial-injection-industrial-injection-2001-2004-lb7-duramax-premium-stock-plus-cylinder-heads-rh-lh-set-pdm-lb7sh-pdm-lb7sh","title":"Industrial Injection Industrial Injection 2001-2004 LB7 Duramax Premium Stock Plus Cylinder Heads (RH  LH Set) PDM-LB7SH | PDM-LB7SH","description":"\u003cp\u003eHeads are first jet washed in a high pressure spray cabinet to remove oil and dirt, then glass beaded to remove carbon. Next they are checked by magnafluxing, (cast iron only) or pressure testing. They are visually inspected for defects that would make them unusable.\n\nNew High Strength Alloy, Heat Treated iron based valve guides are installed. These guides are heat treated to Rockwell 22 Scale, which produces the ultimate in wear resistance. This is far superior to original guide material, including Bronze. The guide incorporates a spiral grove inside the guide to hold oil and aid the lubrication of the valve during engine operation.\n\nGuides are then honed (not reamed) to exact size using a diamond honing mandrel. Diamond abrasives allow for consistency of size, surface finish, and bore geometry with no variation from guide to guide. The guide size is then verified using a valve guide bore gauge.\n\nAs needed the head receives new Premium valve seat inserts made from a true Nickel Based Non-Magnetic material that was developed for extreme operating conditions.\n\nNext the head is treated to a multi angle valve job to help maximize the flow of air in and out of the head. This is accomplished using a Serdi 100 guide and seat machine. Serdi uses a solid carbide straight shank pilot. When inserted into the valve guide, it simulates the real valve stem during the centering process. This guarantees the valve seat is finished for a perfect valve to seat match.\n\nUsing CBN or Diamond tooling the head is given a new surface. With our Berco milling machine we can control the surface finish to accommodate different head gasket types. For example MLS head gaskets require a very smooth surface finish.\n\nFinally the head is jet washed dried and assembled with new valve seals and new valve springs.\u003c\/p\u003e\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\n\u003cul class=\"productpage_list\"\u003e\n\u003cli\u003eDirect Replacement\u003c\/li\u003e\n\u003cli\u003eDiamond Honed Guides\u003c\/li\u003e\n\u003cli\u003eUnshrouded Valves\u003c\/li\u003e\n\u003cli\u003eHigh Strength Alloy, Heat Treated iron based valve guides\u003c\/li\u003e\n\u003cli\u003ePremium valve seat inserts made from a true Nickel Based Non-Magnetic material\u003c\/li\u003e\n\u003cli\u003eMulti angle valve job\u003c\/li\u003e\n\u003cli\u003eNew valve springs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003ctable style=\"border-collapse:collapse;width:100%;margin-top:12px;font-size:13px\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;width:160px;background:#f5f5f5\"\u003eAPG Part #\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003eIISPDM-LB7SH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;background:#f5f5f5\"\u003eMFG Part #\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003ePDM-LB7SH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;background:#f5f5f5\"\u003eUPC\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003e840256915488\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;background:#f5f5f5\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003eIndustrial Injection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;background:#f5f5f5\"\u003eCategory\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003eEngine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;background:#f5f5f5\"\u003eSubcategory\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003eCylinder Block Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;background:#f5f5f5\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003e80 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;background:#f5f5f5\"\u003eLine Code\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003eIIS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp style=\"margin-top:8px;font-size:13px;color:#b45309\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This item includes a refundable core charge of $350.00, included in the price above. Return your old core to receive the core charge refund.\u003c\/p\u003e","brand":"Industrial Injection","offers":[{"title":"Included (+$350.00 core charge)","offer_id":43680868663386,"sku":"IISPDM-LB7SH","price":2149.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/5018\/4538\/files\/PDM-LB7SH-TL_585d5ee5-6ea6-45a4-9f46-34599151a1ed.jpg?v=1784497278","url":"https:\/\/garagegeardirect.com\/products\/industrial-injection-industrial-injection-2001-2004-lb7-duramax-premium-stock-plus-cylinder-heads-rh-lh-set-pdm-lb7sh-pdm-lb7sh","provider":"Garage Gear Direct","version":"1.0","type":"link"}