{"product_id":"fel-pro-engine-cylinder-head-bolt-set-es-72173-for-gm-isuzu-2002-2004-oem-equivalent-t-y-replacement-application-specific","title":"Fel‑Pro Engine Cylinder Head Bolt Set ES 72173 for GM\/Isuzu (2002–2004) — OEM‑equivalent T‑Y Replacement, Application‑Specific","description":"\u003cp\u003e\u003cstrong\u003eFel-Pro ES 72173 is a complete engine cylinder head bolt set engineered to replace torque-to-yield head fasteners with OE-equivalent bolts for a reliable head installation.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen a cylinder head is removed for service, damaged or single-use torque-to-yield (T-Y) head bolts must be replaced to restore clamping accuracy and engine durability. The Fel-Pro ES 72173 kit supplies new, application-specific head bolts manufactured and validated to meet or exceed original equipment standards. That helps technicians and DIYers get the correct hardware and avoid the risk of reusing bolts that could stretch or fail.\u003c\/p\u003e\n\n\u003ch3\u003eWhat vehicles and engines does this head bolt set fit?\u003c\/h3\u003e\n\u003cp\u003eThis bolt set is designed for specific GM and Isuzu applications from the early 2000s. Compatibility covers select models including Isuzu Ascender, Buick Rainier, and several Cadillac variants; always verify your exact year, model, engine and trim before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirmed fit for Isuzu Ascender (2003–2004) and Buick Rainier (2004).\u003c\/li\u003e\n  \u003cli\u003eCovers Cadillac Escalade ESV and EXT variations (2002–2004 ranges noted).\u003c\/li\u003e\n  \u003cli\u003eAlso listed for 2004 Cadillac CTS in certain engine configurations.\u003c\/li\u003e\n  \u003cli\u003eUse the vehicle lookup (year\/make\/model\/engine\/trim) to confirm fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these bolts compare to original equipment?\u003c\/h3\u003e\n\u003cp\u003eFel-Pro supplies bolts manufactured to match or surpass OEM specifications for strength, thread profile and finish. Each bolt is application-specific so it fits the intended head and block geometry, delivering proper clamping force and torque behavior during installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBuilt to meet or exceed original equipment performance criteria.\u003c\/li\u003e\n  \u003cli\u003eCorrect thread and shoulder dimensions for intended cylinder head applications.\u003c\/li\u003e\n  \u003cli\u003eMaterials and heat-treatment chosen for consistent torque-to-yield characteristics.\u003c\/li\u003e\n  \u003cli\u003eValidated for fit, form and function through manufacturer testing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy replace T-Y head bolts instead of reusing them?\u003c\/h3\u003e\n\u003cp\u003eTorque-to-yield bolts are tightened past their elastic limit and will stretch to achieve required clamping force. Reusing them risks improper clamp pressure, which can lead to leaks or uneven sealing. Replacing with a new Fel-Pro set restores predictable torque behavior and reduces the chance of post-repair sealing issues.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrevents inaccurate clamp from previously stretched bolts.\u003c\/li\u003e\n  \u003cli\u003eReduces likelihood of head gasket or sealing problems after reassembly.\u003c\/li\u003e\n  \u003cli\u003eSimplifies compliance with manufacturer service procedures that call for new fasteners.\u003c\/li\u003e\n  \u003cli\u003eProvides peace of mind when performing major engine repairs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Fel-Pro ES 72173 head bolt set is intended for professional technicians and competent DIY mechanics performing cylinder head removal or replacement on supported Isuzu, Buick and Cadillac models. It's the right choice when the service manual specifies new torque-to-yield head bolts, or when you want OEM-equivalent hardware validated for fit and long-term durability. Before purchase, confirm your vehicle details (year, make, model, engine and trim) to ensure correct application.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these bolts one-time-use only?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. These torque-to-yield style head bolts are designed for single-use and should be replaced when the head is removed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I confirm this set fits my vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Enter your year, make, model, engine and trim in the vehicle fit tool or check the product notes for confirmed fit details.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Fel-Pro","offers":[{"title":"Default Title","offer_id":48086097756318,"sku":"B000C2GB54","price":45.37,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/fel-pro-es72173-front-view-head-bolts.jpg?v=1785884574","url":"https:\/\/northtrailauto.ca\/products\/fel-pro-engine-cylinder-head-bolt-set-es-72173-for-gm-isuzu-2002-2004-oem-equivalent-t-y-replacement-application-specific","provider":"North Trail Auto","version":"1.0","type":"link"}