2024-2025 6.6l L5P Duramax Parts Collection
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6.6 L5P Duramax parts & delete kit solutions (2024–2025)
For 2024–2025 Chevy and GMC 6.6L L5P trucks, our collection provides emissions-off components designed to reduce backpressure, lower EGTs, and optimize exhaust flow under sustained load. Our lineup covers ECM tuning tools, full delete bundles, DEF/DPF pipes, EGR components, tuners, and exhaust systems tailored to the updated platform.
Explore our L5P Duramax delete kit collection
Complete DPF, DEF, and EGR removal solutions for 2024–2025 L5P Duramax trucks.
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Full delete kits - DPF/DEF/CAT-delete pipes, EGR block-off plates, coolant bypass fittings, clamps, gaskets, mounting brackets, heat-resistant bolts, ECM-unlock tools, model-year-specific 2024–2025 cables, installation fittings.
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DPF/CAT delete pipes - 4″ direct-fit pipes, updated 2024–2026 L5P flanges, welded hangers, sensor bungs, bracket mounts, hardware packs, optional resonator-delete adapters.
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EGR delete kits - block-off plates, coolant reroute lines, updated seals, stainless bolts, gaskets, engine-side brackets, hose plugs, 2024-2025 geometry-matched fittings.
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Tuning & ECM tools - tuning devices, year-specific ECM strategy files, calibration bundles, harness adapters, cables for 2024-2025 modules, flash utilities, setup instructions.
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Exhaust upgrades - 4″ and 5″ exhaust systems, mandrel-bent stainless tubing, flanges, exhaust hangers, clamps, hardware, heat-shield sections, adapter fittings for emissions-off routing.
Dieselino: Your trusted source for Duramax upgrades
Dieselino components are built with mandrel-bent stainless tubing, reinforced flanges, and ECM-matched calibrations tested for 2024-2025 L5P platform compatibility.
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verified fitment for all 2024-2025 GM 6.6L Duramax models;
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heavy-duty components for towing and continuous diesel loads;
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ECM assistance and clear tuning guidance;
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fast shipping with complete mounting hardware included;
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exhaust, EGR, and DPF solutions backed by expert support.
FAQs
Yes, but only the tuning differs. A 6.6 Duramax delete kit uses the same hardware across all L5P model years - pipes, flanges, and sensor ports remain consistent. However, the 6.6L L5P Duramax ECM calibration changed for 2024, 2025, and 2026 trucks, requiring updated tuning files to prevent fault codes.
The physical delete components install the same way, but you must use year-specific tuner software for proper operation.
An L5P Duramax delete kit with an L5P DPF delete setup on Chevy Duramax and GMC trucks typically drops exhaust gas temperature by about 80-150°F under load. Backpressure reduction in the 20-35% range helps the turbo hold boost more consistently during towing, long highway pulls, and heavy acceleration. Most owners see an extra 15-30 HP from the airflow change alone, with smoother response when these trucks are worked hard.
On 2024-2025 trucks, L5P Duramax tuning requires an unlocked ECM, a compatible tuner, and access to calibrated L5P delete tuning files. You cannot tune these engines with simple plug-in devices because unlocking and flashing require specialized remote hardware.
Most owners should use a diesel shop or experienced calibrator, because incorrect tuning can trigger limp mode, emissions faults, or drivetrain damage.
On a 6.6L L5P Duramax from 2024, 2025, or 2026, a home install is possible only for experienced diesel owners with solid electrical skills. Plan on 6-10 hours of work, including lifting the truck, removing factory exhaust and DEF hardware, routing the new pipes, and finishing ECM programming with a compatible tuner.
On a L5P Duramax, total cost depends on pipe size, ECM unlocking, and tuning, but real-world setups fall into clear price ranges:
- Delete pipe (DPF/DEF): $280-$550
- Full DPF or DEF delete kits with EGR + exhaust: $1,500+
- ECM unlock + tuner package: $650-$1,200
Final cost depends on pipe size, material, and how complex the 6.6 Duramax tuning work is on your truck.
Yes, installing a Duramax DPF delete kit on a 2024-2025 truck will void powertrain warranty coverage on emissions-related components and any linked failures. GM updated hardware and control logic on these model years, so the emissions system is tightly integrated with ECM strategies on L5P Duramax engines.
Before fitting any delete hardware, owners should factor in the loss of factory support and decide whether off-road or competition-only use justifies that trade-off.