--- product_id: 101462820 title: "LSX Header Bolts for LS1 LQ4 LQ9 LS9 4.8 5.3 6.0 6.2L Grade 10.9 Silverado Tahoe (Iron)" brand: "ispeedy" price: "102.45 DT" currency: TND in_stock: true reviews_count: 8 url: https://www.desertcart.tn/products/101462820-lsx-header-bolts-for-ls1-lq4-lq9-ls9-4-8 store_origin: TN region: Tunisia --- # 150,000 PSI strength Grade 10.9 steel Flange design LSX Header Bolts for LS1 LQ4 LQ9 LS9 4.8 5.3 6.0 6.2L Grade 10.9 Silverado Tahoe (Iron) **Brand:** ispeedy **Price:** 102.45 DT **Availability:** ✅ In Stock ## Summary > 🔧 Elevate Your Engine Game! ## Quick Answers - **What is this?** LSX Header Bolts for LS1 LQ4 LQ9 LS9 4.8 5.3 6.0 6.2L Grade 10.9 Silverado Tahoe (Iron) by ispeedy - **How much does it cost?** 102.45 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/101462820-lsx-header-bolts-for-ls1-lq4-lq9-ls9-4-8) ## Best For - ispeedy enthusiasts ## Why This Product - Trusted ispeedy brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **OEM Superior:** Outperforms original equipment for peace of mind and reliability. - • **High Tensile Power:** Withstands a staggering minimum tensile strength of 150,000 PSI. - • **Unmatched Strength:** Engineered from hardened Grade 10.9 steel for ultimate durability. - • **Extreme Condition Ready:** Crafted to endure high-stress environments and extreme conditions. - • **Innovative Flange Design:** Built-in washer distributes clamping load for superior holding power. ## Overview The LSX Header Bolts are precision-engineered from hardened Grade 10.9 steel, boasting a minimum tensile strength of 150,000 PSI. Designed with a unique flange that includes a built-in washer, these bolts ensure optimal clamping load distribution, making them a superior choice over OEM products for LS1, LS2, LS3, LS6, LS7, LS9, and GM Vortec engines. Perfect for those who demand performance and reliability in extreme conditions. ## Description Item Includes 12 Bolts Item Details These bolts are made with hardened Grade 10.9 steel, and can withstand a minimum tensile strength of 150,000PSI. Flange Bolts are identified by the built-in washer under the head that acts to distribute the clamping load over a greater area. They are designed to provide the same holding power as if you were to use a washer. These bolts are superior to original or OEM product, and are made to withstand high strength and extreme conditions Applications For LS1, LS2, LS3, LS6, LS7, LS9, GM Vortec 4.8 5.3 6.0 6.2L For Camaro, For Corevette, For Cadillac CTS-V, For Pontiac Firebird, For GTO, For Chevrolet Silverado, For GMC Sierra, For Escalade,For Yukon Denali, For Suburban, Z28, ZL1, Z06, LQ4, LQ9. ## Features - These bolts are made with hardened Grade 10.9 steel, and can withstand a minimum tensile strength of 150,000PSI. - Flange Bolts are identified by the built-in washer under the head that acts to distribute the clamping load over a greater area. - They are designed to provide the same holding power as if you were to use a washer. - These bolts are superior to original or OEM product, and are made to withstand high strength and extreme conditions. - For LS1, LS2, LS3, LS6, LS7, LS9, GM Vortec 4.8 5.3 6.0 6.2L ## Images ![LSX Header Bolts for LS1 LQ4 LQ9 LS9 4.8 5.3 6.0 6.2L Grade 10.9 Silverado Tahoe (Iron) - Image 1](https://m.media-amazon.com/images/I/61ub-aIuYZS.jpg) ![LSX Header Bolts for LS1 LQ4 LQ9 LS9 4.8 5.3 6.0 6.2L Grade 10.9 Silverado Tahoe (Iron) - Image 2](https://m.media-amazon.com/images/I/61Zxn+dwwHS.jpg) ![LSX Header Bolts for LS1 LQ4 LQ9 LS9 4.8 5.3 6.0 6.2L Grade 10.9 Silverado Tahoe (Iron) - Image 3](https://m.media-amazon.com/images/I/61hZjIfAonS.jpg) ![LSX Header Bolts for LS1 LQ4 LQ9 LS9 4.8 5.3 6.0 6.2L Grade 10.9 Silverado Tahoe (Iron) - Image 4](https://m.media-amazon.com/images/I/61zIVgUiYhS.jpg) ![LSX Header Bolts for LS1 LQ4 LQ9 LS9 4.8 5.3 6.0 6.2L Grade 10.9 Silverado Tahoe (Iron) - Image 5](https://m.media-amazon.com/images/I/61y-WHJ8W5S.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars perfect fit on my 07 classic silverado 6.0 *by K***H on Reviewed in the United States on September 30, 2022* perfect fit on my 07 classic silverado 6.0 ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Works great on my ls swap *by K***N on Reviewed in the United States on April 8, 2022* Works great for my ls swap ### ⭐⭐⭐⭐ 4.0 out of 5 stars Lock washers could be better... *by R***R on Reviewed in the United States on January 3, 2020* Is Ispeedy the new Spectre? These will work just fine, just wish the lock washers were a little beefier to better and more fully fit the flanged bolt heads --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/101462820-lsx-header-bolts-for-ls1-lq4-lq9-ls9-4-8](https://www.desertcart.tn/products/101462820-lsx-header-bolts-for-ls1-lq4-lq9-ls9-4-8) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-08*