{"product_id":"btr-small-bore-ls9-head-gasket-sold-in-pairs","title":"BTR SMALL BORE LS9 HEAD GASKET SOLD IN PAIRS","description":"BTR SMALL BORE LS9 HEAD GASKET - 3.950\" BORE - SOLD IN PAIRS - BTR-058420-2 The BTR LS9 head gasket can't be beat for performance and value, but traditionally, the smaller bore engines have had to make do with a head gasket bore 0.15\" bigger than needed. By re-designing a smaller bore gasket, we increased the amount of gasket material between the bores another 0.15\" for better durability . This is advantageous on small bore LS engines with higher cylinder pressures such as those found in power adder applications. These feature .055\" thickness spread across 7 layers of steel. Install tab towards front \u0026amp; added coolant passages to the rear DESIGNED TO WORK Â WITH A TRICK FLOW FAST AS CAST LS1 HEAD. May also work with other aftermarket cylinder heads.","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":61757067952498,"sku":"BTR-058420-2","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0960\/6643\/7490\/files\/hyper-motive-image-coming-soon_f04ee88c-9e9a-49b2-8914-87a6d07a99a1.png?v=1775963169","url":"https:\/\/hypermotive.com\/products\/btr-small-bore-ls9-head-gasket-sold-in-pairs","provider":"Hypermotive Performance","version":"1.0","type":"link"}