Description
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Product Description
B0DZGYP59V
Precision Engineered Direct Replacement
Upgrade your Chevy/GMC V8 with GUIYINT’s FJ504 fuel injector. Precision-crafted for 5.0L/5.7L engines (1996-2002), this high-flow MPFI kit ensures optimal combustion and throttle response. Direct OEM fitment saves installation time.
B0DZGYP59V
Extended Vehicle Compatibility
Compatible with C1500/C2500/C3500, Suburban, Tahoe, Escalade, Savana, and Express vans. Verify your model year (1996-2002) for guaranteed fitment.
High-Flow Design for Power Optimization
304 stainless steel nozzles deliver 15% higher fuel flow vs. stock injectors. Achieve smoother acceleration and reduced engine knock.
Military-Grade Durability
Quadruple O-ring seals and CNC-machined body withstand 100,000+ pressure cycles. No leaks under extreme temperatures (-40°F to 300°F).
B0DZGYP59V
Plug-and-Play Installation
Color-coded connectors and included mounting hardware enable DIY installation in under 45 minutes. No ECU reprogramming required.
B0DZGYP59V
Emissions Compliance Guaranteed
Meets EPA Tier 1 standards with 2.5μm fuel atomization. Pass smog checks in all 50 states.
Real-World Performance Data
Lab-tested to maintain 98% flow consistency after 50k miles. Third-party verified for 11% MPG improvement in highway driving.
Anti-Corrosion Protection
Nickel-plated terminals resist salt/fuel additives. Includes dielectric grease for long-term connector protection.
Complete Conversion Kit
Contains 8 injectors, pressure regulator, filter kit, and illustrated manual. Everything for full MPFI upgrade in one box.




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