Exergy E04-10702 New Denso Stock Replacement Injection Pump | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Features: - Direct replacement for multiple OEM part numbers - Precision-engineered for consistent fuel delivery - Enhances throttle response and engine performance - Supports optimal combustion and fuel efficiency - Compatible with factory fuel system components - Meets or exceeds OEM performance standards - Brand-new Denso HP4 injection pump - Improves reliability in stock or tuned setups High-Quality Injection Pump Replacement by Exergy If your L5P Duramax isn’t running like it used to, hard starts, low power, rough idle, it might be time to look at the heart of the fuel system: the injection pump. The Exergy New Denso Stock Replacement Injection Pump is a direct replacement designed specifically for 2017–2025 Silverado and Sierra HD trucks running the 6.6L L5P. Whether you're swapping out a failing pump or just trying to restore factory performance, this unit delivers the reliability and precision your engine depends on. Built around the Denso HP4 platform, this pump is brand-new, not remanufactured, and offers the same fit, flow rate, and operating specs as the factory unit. It replaces GM part numbers 12678993 and 12701094, as well as corresponding Denso, Alliant Power, and International references. That means no tuning changes, no custom lines, and no compatibility headaches, just plug it in, prime the system, and fire it up. Built to OEM Specs What sets this pump apart is the calibrated, OEM-quality fuel delivery that ensures clean, consistent injection under every load. It’s designed to handle stock fueling demands with ease and is more than capable of supporting mild upgrades like tuning, intakes, and exhaust. Drivers often notice improved throttle response, smoother idle, and more predictable power delivery, especially under heavy acceleration or towing. Installation is straightforward for any experienced diesel tech or weekend warrior who’s tackled fuel system work before. And because it’s a new unit, not a rebuilt core, you’re not rolling the dice on wear history or questionable internals. It’s a clean slate with the backing of Exergy’s reputation for quality and precision. Fits: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P