{"title":"Valvetrain","description":"","products":[{"product_id":"2001-2005-gm-duramax-6-6l-lb7-lly-heavy-duty-main-stud-kit-msk667y","title":"2001-2005 \/ 2017-2025 Duramax Gator Fasteners HD Main Stud Kit (MSK667Y)","description":"\u003cp\u003e\u003cstrong\u003e2001-2005 \/ 2017-2025 Duramax Gator Fasteners HD Main Stud Kit (MSK667Y)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Gator Fasteners Heavy Duty Main Stud Kit (MSK667Y) is the ultimate upgrade for 2001-2005 6.6L LB7 \u0026amp; LLY \/ 2017-2025 L5P Duramax Diesel engines, providing superior clamping force and durability. Whether you're pushing high boost, towing heavy loads, or running a high-performance build, these main studs will keep your bottom end secure.\u003c\/p\u003e\n\u003cp\u003eUnlike factory bolts that can stretch and weaken under extreme conditions, Gator Fasteners HD220 main studs are designed to reinforce your engine block and ensure long-term reliability.\u003c\/p\u003e\n\u003cp\u003eWhen it comes to durability and performance, \"Nothing Bites Like Gator!\"\u003c\/p\u003e","brand":"Gator Fasteners","offers":[{"title":"Default Title","offer_id":44523468783867,"sku":"MSK667Y","price":519.39,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0576\/3298\/1184\/files\/Product_Image_-_2025-03-24T100403.637.png?v=1742832247"},{"product_id":"2017-2021-gm-duramax-heavy-duty-head-stud-kit-hsk66l5p","title":"2017-2021 Duramax L5P Gator Fasteners Heavy Duty Head Stud Kit (HSK66L5P)","description":"\u003cp\u003e\u003cstrong\u003e2017-2021 Duramax L5P Gator Fasteners Heavy Duty Head Stud Kit (HSK66L5P)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Gator Fasteners Heavy Duty Head Stud Kit (HSK66L5P) is built to handle the extreme pressures and demands of high-performance 2017-2025 6.6L L5P Duramax engines. Whether you're pushing high boost, heavy towing, or aggressive tuning, this kit ensures superior clamping force to prevent head gasket failures.\u003c\/p\u003e\n\u003cp\u003eUnlike factory head bolts that stretch under high pressure, Gator Fasteners head studs offer maximum durability and strength, making them the perfect solution for drag racing, sled pulling, off-road performance, and daily driving.\u003c\/p\u003e\n\u003cp\u003eUpgrade to Gator Fasteners Heavy Duty Head Studs and experience the difference in strength, reliability, and performance—because \"Nothing Bites Like Gator.\"\u003c\/p\u003e","brand":"Gator Fasteners","offers":[{"title":"Default Title","offer_id":44523468980475,"sku":"HSK66L5P","price":1113.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0576\/3298\/1184\/files\/Product_Image_-_2025-03-25T085349.527.png?v=1742914437"},{"product_id":"32v-duramax-rocker-bridges-fleece-performance","title":"2001-2019 Duramax Rocker Bridges (FPE-BRAB-D1)","description":"\u003cp\u003eFleece Performance billet rocker arm bridges for the GM Duramax. These bridges offer a massive 2.5-time strength improvement over factory bridges. Machined from billet 8620 steel, the bridges are surface ground for flatness, feature improved oiling to the valve stems, and case hardened and carburized for strength.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncludes 16 bridges.\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":44525978321147,"sku":"FPE-BRAB-D1","price":743.18,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0576\/3298\/1184\/files\/2001-2019-duramax-rocker-bridges-fpe-brab-d1-fleece-performance.jpg?v=1725583748"},{"product_id":"2017-2023-duramax-l5p-chromoly-pushrods","title":"2017-2023 Duramax L5P Chromoly Pushrods","description":"\u003cp data-mce-fragment=\"1\"\u003eSoCal Diesel L5P Chromoly Pushrods\u003c\/p\u003e","brand":"SoCal Diesel","offers":[{"title":"Default Title","offer_id":44691248808187,"sku":null,"price":659.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0576\/3298\/1184\/files\/2017-2023-duramax-l5p-chromoly-pushrods-socal-diesel.png?v=1725589274"},{"product_id":"2017-2023-duramax-l5p-cylinder-head-gasket-grade-c-55524","title":"2017-2023 Duramax L5P Cylinder Head Gasket Grade C (55524)","description":"\u003cp\u003e\u003cstrong\u003e2017-2023 Duramax L5P Cylinder Head Gasket Grade C (55524)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe MAHLE 55524 Cylinder Head Gasket (Grade C) replaces the blown-out head gasket in your 2017-2023 GM 6.6L Duramax L5P engine. High-quality materials are used in the construction of this head gasket set to provide a long service life and leak-proof seal.\u003c\/p\u003e","brand":"Mahle","offers":[{"title":"Single","offer_id":47696614850811,"sku":"55524","price":146.45,"currency_code":"CAD","in_stock":true},{"title":"Set of 2","offer_id":47696614883579,"sku":"55524-2","price":292.9,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0576\/3298\/1184\/files\/Product_Image_-_2025-11-12T101713.364.png?v=1762967855"},{"product_id":"2001-2025-duramax-6-6l-callies-stage-1-alternate-firing-order-induction-hardened-270-9","title":"2001-2025 Duramax 6.6L Callies Stage 1 Alternate Firing Order Induction Hardened 108 LSA + 4° Advance Camshaft (270-009)","description":"\u003cp\u003e\u003cstrong\u003e2001-2025 Duramax 6.6L Callies Stage 1 Alternate Firing Order Induction Hardened (270-009)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe main reason for modifying the Duramax firing order with the camshaft is to relieve stress on the front portion of the crankshaft in higher performance applications. The OEM firing order ends at Cylinder #3 and then continues from the beginning through cylinders 1 and 2.\u003c\/p\u003e\n\u003cp\u003eThe Duramax Cranks see the most strain and tend to break right behind the first rod throw at the intersection of the second main journal (the snout). We have seen failures on anything from mildly modified daily drivers to max effort trucks. The Duramax engine Harmonics become too stressful on the cranks when getting into the higher RPM ranges and bigger power levels with the OEM firing order. With this DuraStar Alternate Firing Camshaft, cylinders 1, 2, and 3 are moved away from each other to distribute the stress of combustion more evenly and help reduce the abuse to your crankshaft.\u003c\/p\u003e\n\u003cp\u003eDuramax engines respond to alternate firing camshafts better than any other diesel on the market. Thanks to the high flow aluminum heads, the right camshaft can increase the Duramax's Head flow considerably. Dyno tests have proven a much broader power curve, increasing HP and Torque through all RPM's making this mod perfect for anything from a daily driver to NHRDA usage.\u003c\/p\u003e","brand":"Callies","offers":[{"title":"Default Title","offer_id":47775654707451,"sku":"270-009","price":968.36,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0576\/3298\/1184\/files\/calliescamshaftduramax-6_480x480_075ec35b-f7ce-45ba-8614-108624f9ca37.webp?v=1765901528"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0576\/3298\/1184\/collections\/Product_Image_67_9ab604c2-446f-42fc-afdf-54b0e68b421a.png?v=1780430148","url":"https:\/\/www.ocdiesel.ca\/collections\/2017-2026-gm-duramax-l5p-valvetrain.oembed","provider":"OCDiesel","version":"1.0","type":"link"}