--- product_id: 18530274 title: "LSXrt 102mm Intake Manifold for GM LS 4.8/5.3/6.0L Truck with Cathedral Port Heads" brand: "fast" price: "528118 som" currency: KGS in_stock: true category: "Fast" url: https://www.desertcart.kg/products/18530274-lsxrt-102mm-intake-manifold-for-gm-ls-4-8-5 store_origin: KG region: Kyrgyzstan --- # Advanced polymer for lightweight & cooling 102mm inlet for max airflow Modular design with removable runners LSXrt 102mm Intake Manifold for GM LS 4.8/5.3/6.0L Truck with Cathedral Port Heads **Brand:** fast **Price:** 528118 som **Availability:** ✅ In Stock ## Summary > ⚡ Dominate the streets with precision airflow and race-ready power! ## Quick Answers - **What is this?** LSXrt 102mm Intake Manifold for GM LS 4.8/5.3/6.0L Truck with Cathedral Port Heads by fast - **How much does it cost?** 528118 som with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/18530274-lsxrt-102mm-intake-manifold-for-gm-ls-4-8-5) ## Best For - fast enthusiasts ## Why This Product - Trusted fast brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Modular Runner Design:** Easily remove and port individual runners for custom tuning and max performance. - • **Tailored Fit for GM LS Trucks:** Perfectly engineered for 4.8/5.3/6.0L cathedral port engines with zero clearance headaches. - • **Boost Your Rear-Wheel HP by 25+:** Unlock serious power gains over stock with a Big Mouth 102mm throttle body. - • **Plug-and-Play OEM Compatibility:** Maintains factory accessory fitment and fuel/emission connections—no compromises. - • **Lightweight & Heat-Resistant Polymer:** Stronger, cooler intake charge means more consistent power under pressure. ## Overview The LSXrt 102mm Intake Manifold is a precision-engineered, modular intake designed for late-model GM 4.8/5.3/6.0L LS cathedral port truck engines and LS1/2/6 race applications. Featuring a 102mm inlet compatible with multiple throttle bodies, it delivers up to 25 peak horsepower gains while maintaining factory fitment and clearance. Constructed from advanced injection-molded polymer, it offers lightweight durability and superior heat resistance, making it the ultimate upgrade for enthusiasts seeking reliable, high-flow performance. ## Description Designed specifically for GM 4.8/5.3/6.0L LS cathedral port truck engines and cathedral port LS1, -2, -6 race applications where hood clearance is not a concern. The FAST LSXrt 102mm Intake Manifold follows the path chartered by the original FAST LSX Gen III Intake by featuring a modular design that allows for easy porting and disassembly and a runner design that yields an incredible 25 peak horsepower gain over the stock intake, on a stock 6.0L engine with a Big Mouth 102mm Throttle Body. And similar to the LSXr 102mm Intake Manifold for cars, the LSXrt features the ability to remove individual runners for modification. The LSXrt is constructed from a proprietary precision injection molded polymer which offers many benefits, including lighter weight, greater strength and lower heat soak propensity. While it features a 102mm air inlet that was designed for the FAST Big Mouth 102mm Throttle Body, it can also be used with stock 90mm or aftermarket 92mm throttle bodies (78mm three-bolt throttle bodies require an adapter). Other features include integrated nitrous bungs and precise bolt-on fit that permits the use of factory accessories and OEM fuel/emission connections without adjustments or clearance issues. Some GM truck models may require the FAST 92mm or 102mm throttle body. ## Features - Designed for late model GM 4.8/5.3/6.0L port truck engines and all LS1, -2, -6 based engine race applications with appropriate cowl clearance. - Multi-layer modular design with removable runners for easy disassembly and porting. - 102mm inlet works with 90, 92, or 102mm throttle bodies for high flow and minimal restriction. - Advanced polymer material is strong, lightweight and cools intake charge for enhanced power. - Big gains in rear-wheel hp yet retains factory fitments and under-hood clearance requirements. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00VS7J4NI | | Best Sellers Rank | #2,201,184 in Automotive ( See Top 100 in Automotive ) #2,025 in Automotive Replacement Engine Intake Manifolds | | Brand | FAST | | Customer Reviews | 3.5 3.5 out of 5 stars (25) | | Date First Available | April 7, 2015 | | Exterior | Machined | | Item Weight | 21.8 pounds | | Item model number | 146602B | | Manufacturer | COMP Cams | | Manufacturer Part Number | 146602B | | Model | LSXrt 102mm Cathedral Port Intake Manifold for 4.8, 5.3 and 6.0L LS Trucks | | OEM Part Number | N | | Product Dimensions | 24.9 x 16 x 13.4 inches | ## Images ![LSXrt 102mm Intake Manifold for GM LS 4.8/5.3/6.0L Truck with Cathedral Port Heads - Image 1](https://m.media-amazon.com/images/I/71FLPOoDFRL.jpg) ![LSXrt 102mm Intake Manifold for GM LS 4.8/5.3/6.0L Truck with Cathedral Port Heads - Image 2](https://m.media-amazon.com/images/I/6197wfP1EXL.jpg) ![LSXrt 102mm Intake Manifold for GM LS 4.8/5.3/6.0L Truck with Cathedral Port Heads - Image 3](https://m.media-amazon.com/images/I/81RXG3I3pOL.jpg) ## Questions & Answers **Q: What throttle body it use for 04 ls 6.0??** A: We do not offer a drive by wire throttle body. But any LS throttle body should work. We have an adapter for the three bolt throttle bodies. **Q: Is this Carb approved for use in Ca vehicles?** A: The manifold is 50-State Legal (CARB EO #D-279-9) **Q: Would the stock fuel rails and throttle body from a 2005 5.3 fit this lsxrt intake?** A: Yes, you can use the stock rails. You will need fuel rail kit 146030-kit to make them work. Also, if you have the three bolt throttle body, you will need an adapter plate 146029-kit. **Q: Will this fit on a lsx b8 6.2l?** A: If you have cathedral port cylinder heads, the intake should work. Otherwise, it will not. Also, if this is not for a truck application, it will likely not clear your hood. ## Frequently Bought Together - LSXrt 102mm Intake Manifold for GM LS 4.8/5.3/6.0L Truck with Cathedral Port Heads - Camshaft Retainer Plate Gasket Compatible with LS Series Engines, &Bolt Kit ARP 134-1003 Gen III IV V for GM LS1 LS2 LS3 4.8 5.3L 6.0L 6.2L Vortec Corvette Cam - MSCRP AN4 Fuel Brake Line,LS Coolant Crossover Steam Vent Kit LS Stainless Coolant Crossover Steam Vent Kit Compatible with for LS1, LS2, LS3, LS6, LS7, LS9, LSX --- ## 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.kg/products/18530274-lsxrt-102mm-intake-manifold-for-gm-ls-4-8-5](https://www.desertcart.kg/products/18530274-lsxrt-102mm-intake-manifold-for-gm-ls-4-8-5) --- *Product available on Desertcart Kyrgyzstan* *Store origin: KG* *Last updated: 2026-08-04*