{"product_id":"gzgn-fj504-fuel-injector-for-gm-5-7l-5-0l-v8-1996-2002-direct-fit-oe-replacement","title":"GZGN FJ504 Fuel Injector for GM 5.7L\/5.0L V8 (1996-2002) — Direct Fit, OE Replacement","description":"\u003cp\u003e\u003cstrong\u003eGZGN FJ504 spider fuel injector is a direct-fit, OE-replacement injector designed for 1996–2002 GM and select Isuzu V8 engines to restore multi-port fuel delivery and spray pattern consistency.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen an aging injector causes rough idle, poor throttle response, or uneven fuel economy, replacing it with a correctly matched unit restores engine balance without expensive machining or tuning. This injector is built to replace factory OE numbers like 17114163 and 89060440 and fits many Chevy, GMC, Cadillac and Isuzu applications with 5.0L and 5.7L V8 engines from 1996–2002.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles will this injector fit?\u003c\/h3\u003e\n\u003cp\u003eThis GZGN FJ504 is engineered for a wide set of GM trucks, SUVs and vans plus select Isuzu models produced in the late 1990s and early 2000s. Fitment covers C\/K-series trucks, Suburban, Tahoe, Yukon, Escalade, Express\/Savana vans and Isuzu NPR V8s—verify OE numbers to confirm match.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect replacements for OE numbers such as 17114163, 89060440, 2173029 and similar.\u003c\/li\u003e\n  \u003cli\u003eCompatible with Chevy C1500\/C2500\/C3500, K-series, Tahoe, Suburban, Escalade (1996–2002 ranges).\u003c\/li\u003e\n  \u003cli\u003eWorks in GMC Sierra\/Yukon\/K-series, Savana, Express vans and Isuzu NPR V8 5.0L\/5.7L.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this injector affect performance and fuel delivery?\u003c\/h3\u003e\n\u003cp\u003eThe injector is built for multi-port fuel injection systems and reproduces the OEM spray angle, pattern and flow rates to help the engine run smoothly. By atomizing fuel into a fine mist and maintaining consistent pulse response, the unit supports cleaner combustion and more predictable throttle response.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOptimized nozzle geometry for consistent atomization and even cylinder distribution.\u003c\/li\u003e\n  \u003cli\u003ePrecision-wound solenoid for repeatable, computer-controlled fuel pulses.\u003c\/li\u003e\n  \u003cli\u003eFlow characteristics meet or exceed OEM spec for balanced running and economy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and durability features are included?\u003c\/h3\u003e\n\u003cp\u003eGZGN designed this injector with corrosion-resistant internal parts and high-temperature seals to withstand the thermal and chemical stresses of automotive use. Robust construction reduces service frequency and keeps seals intact under engine heat cycles.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStainless-steel calibration slide and spring assembly to resist corrosion.\u003c\/li\u003e\n  \u003cli\u003eHigh-temp O-rings for long-lasting sealing at elevated temperatures.\u003c\/li\u003e\n  \u003cli\u003ePrecision-trimmed internals and solenoid windings for sustained electrical performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs installation straightforward and what warranty is provided?\u003c\/h3\u003e\n\u003cp\u003eInstallation is typically bolt-in when matching OE number and vehicle application; basic mechanical skills and common tools are sufficient for most DIYers. GZGN backs the part with a one-year warranty and recommends checking vehicle fitment tools or the product's fitment list before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCheck fitment by OE number or vehicle selector before purchase.\u003c\/li\u003e\n  \u003cli\u003eOne-year limited warranty with customer support response within 24 hours.\u003c\/li\u003e\n  \u003cli\u003eReplacement procedure follows standard injector removal and reinstallation steps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: The GZGN FJ504 spider fuel injector is aimed at owners and mechanics who need a reliable, affordable OE-equivalent injector for late‑1990s to early‑2000s GM and Isuzu V8 vehicles. It suits fleet technicians, independent repair shops, and DIY enthusiasts restoring engine performance, correcting idle issues, or renewing fuel system components without changing engine tuning.\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: Will this injector fit my 1999 Chevy Silverado 5.7L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If your Silverado uses the listed OE numbers (like 17114163 or 89060440) this injector is compatible; confirm with your vehicle's parts fitment tool first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What warranty does GZGN provide for this injector?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: GZGN includes a one-year limited warranty and commits to customer support responses within 24 hours.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GZGN","offers":[{"title":"Default Title","offer_id":48080647749790,"sku":"B0DKTGF1WL","price":138.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gzgn-fj504-front-view-injector.jpg?v=1785783603","url":"https:\/\/northtrailauto.ca\/products\/gzgn-fj504-fuel-injector-for-gm-5-7l-5-0l-v8-1996-2002-direct-fit-oe-replacement","provider":"North Trail Auto","version":"1.0","type":"link"}