{"product_id":"1409kmt-exhaust-manifold-bolt-repair-kit-for-gm-1999-4-8l-6-2l-driver-rear-passenger-front-clamp-repair-carbon-steel","title":"1409KMT Exhaust Manifold Bolt Repair Kit for GM 1999+ 4.8L–6.2L — Driver Rear \/ Passenger Front Clamp Repair, Carbon Steel","description":"\u003cp\u003e\u003cstrong\u003e1409KMT Exhaust Manifold Bolt Repair Kit replaces broken manifold bolts without removing the cylinder head, clamping the manifold securely to stop leaks on 1999 and newer GM 4.8L–6.2L engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen a stubborn, heat-damaged exhaust bolt snaps, the usual fix can mean expensive teardown or risky bolt extraction. This 1409KMT kit gives a targeted repair option for two common failure locations — the driver-side rearmost bolt and the passenger-side frontmost bolt — by clamping the manifold to the head with a durable bracket assembly that restores sealing pressure without drilling out remnants or pulling the head.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this kit stop exhaust leaks without removing the cylinder head?\u003c\/h3\u003e\n\u003cp\u003eThe repair bracket replaces the failed fastener function by gripping and compressing the manifold flange against the cylinder head. Instead of accessing the bolt shank inside the head, the bracket clamps externally and transfers holding force across the flange, recreating the seal where the original bolt failed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClamps the manifold down to restore gasket contact and sealing.\u003c\/li\u003e\n  \u003cli\u003eAvoids head removal, bolt drilling, or heli-coil installation.\u003c\/li\u003e\n  \u003cli\u003eDesigned for the two most commonly seized bolt locations on GM Vortec engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and engine sizes are compatible with this 1409KMT kit?\u003c\/h3\u003e\n\u003cp\u003eThis kit fits GM trucks and SUVs built 1999 and later equipped with 4.8L, 5.3L, 6.0L, or 6.2L engines. Common compatible models include Silverado, Sierra, Yukon, Denali, Escalade, and Hummer variants that share the Vortec-style manifolds and bolt layout.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSupported engines: 4.8L, 5.3L, 6.0L, 6.2L.\u003c\/li\u003e\n  \u003cli\u003eTypical models: Silverado, Sierra, Yukon, Denali, Escalade, Hummer.\u003c\/li\u003e\n  \u003cli\u003eMounting positions: driver rearmost and passenger frontmost manifold bolts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and quality features ensure durability?\u003c\/h3\u003e\n\u003cp\u003eThe bracket assemblies are made from carbon steel engineered to withstand manifold heat cycles and the thermal expansion that commonly oxidizes and shears factory bolts. By replacing the stressed fastener with a robust clamp, the kit reduces the chance of repeat failure from the same cause.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCarbon steel construction resists heat-related weakening.\u003c\/li\u003e\n  \u003cli\u003eManufactured to meet or exceed OEM strength where it matters.\u003c\/li\u003e\n  \u003cli\u003eSimple hardware minimizes moving parts and failure points.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow straightforward is installation and what tools are needed?\u003c\/h3\u003e\n\u003cp\u003eInstallation is performed from the outside of the manifold and does not require removing the cylinder head or extracting broken bolt fragments. A set of common hand tools—ratchet, sockets, and basic wrenches—is usually sufficient for a competent DIYer or professional mechanic to fit the bracket and torque it to spec.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo specialized bolt-extraction tools required.\u003c\/li\u003e\n  \u003cli\u003eFast, localized repair typically completed in under an hour.\u003c\/li\u003e\n  \u003cli\u003eHardware and bracket shaped for easy positioning on the affected bolt locations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The 1409KMT Exhaust Manifold Bolt Repair Kit is aimed at owners and technicians working on 1999-and-newer GM trucks and SUVs with V8\/V6 4.8L–6.2L engines who need a reliable, lower-cost alternative to cylinder head removal or bolt drilling. It’s especially useful for fleet mechanics, DIY enthusiasts, and repair shops that frequently see heat-corroded manifold bolts and want a durable, service-friendly solution that restores proper manifold clamping without intrusive disassembly.\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: Can I install the bracket without extracting the broken bolt?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The bracket clamps the manifold externally so you do not need to remove or drill out the broken bolt.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this fit my 2003 Chevy Silverado 5.3L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If your Silverado has a 4.8L, 5.3L, 6.0L or 6.2L engine and the common rear driver\/front passenger bolt locations, this kit is compatible.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"1409KMT","offers":[{"title":"Default Title","offer_id":48084529545374,"sku":"B08G4CSDKP","price":33.41,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/1409kmt-front-packaging-bracket.jpg?v=1785858554","url":"https:\/\/northtrailauto.ca\/products\/1409kmt-exhaust-manifold-bolt-repair-kit-for-gm-1999-4-8l-6-2l-driver-rear-passenger-front-clamp-repair-carbon-steel","provider":"North Trail Auto","version":"1.0","type":"link"}