2017-2019 GM 6.6L Duramax L5P

The L5P was close to a clean sheet - new block, new head, a different fuel system - so almost nothing carries back to the LML. These are the early L5P trucks, and shopping them by engine rather than by model year is the difference between a part that fits...

The L5P was close to a clean sheet - new block, new head, a different fuel system - so almost nothing carries back to the LML. These are the early L5P trucks, and shopping them by engine rather than by model year is the difference between a part that fits and a part that ships back. Everything here fits the 2017-2019 Chevrolet Silverado and GMC Sierra 2500/3500 6.6L.

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  • Most relevant
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  • FASS XL Filter Pack - FP3000XLFASS XL Filter Pack - FP3000XL

    FASS XL Filter Pack - FP3000XL

    The FASS Diesel Fuel Systems XL Filter Pack is your all-in-one maintenance solution. Perfect for stocking your shop or prepping for regular servicing, this bundle includes both the new Extreme Water Separator and a matched particulate filter—making it simple to keep your FASS fuel...
    $56.05
    $59.00
    $56.05
  • FASS O-ring KitFASS O-ring Kit

    FASS O-ring Kit

    Got a pinched O-ring or corroded check ball?This kit contains our Viton O-rings in two separate sizes (17mm and 30mm) along with a Viton check ball to help get your fuel pump back to proper condition. Kit Includes: 2 x OR-17 (17mm O-ring) 2...
    $10.00
    $10.00
  • Exergy Denso HP4 Pump | 2017+ Chevrolet 6.6 Duramax L5P

    Exergy Denso HP4 Pump | 2017+ Chevrolet 6.6 Duramax L5P

    $1,080.00
    $1,080.00
  • BD Diesel Flexplate | 2001-2019 Chevrolet 6.6 Duramax LB7 LLY LBZ LMM LML L5P

    BD Diesel Flexplate | 2001-2019 Chevrolet 6.6 Duramax LB7 LLY LBZ LMM LML L5P

    BD's FleX-Plate is designed to reliably handle up to 1,500 lb-ft of torque. These units are forged billet, precision-balanced and SFI approved for use in race application. Black Oxide coated to resist corrosion and prevents hydrogen embrittlement that can cause cracking, these units will...
    $459.95
    $459.95
  • FASS Titanium Signature Series Ultimate Electric Heater Kit | 1994-Current Dodge Ram 5.9 & 6.7 Cummins

    FASS Titanium Signature Series Ultimate Electric Heater Kit | 1994-Current Dodge Ram 5.9 & 6.7 Cummins

    For those who desire the absolute best protection against gelled fuel in cold climates. This kit includes both our High Output Electric Heater Disk and Dual Electric Heater Probe Kit, for up to 500 watts of fuel-thawing power!This ULTIMATE Electric Heater Kit is engineered...
    $435.10
    $458.00
    $435.10
  • FASS Drop-In Series | 2017-2019 Chevrolet 6.6 Duramax L5P Short Bed 2017-2025 Chevrolet 6.6 Duramax L5P Long Bed

    FASS Drop-In Series | 2017-2019 Chevrolet 6.6 Duramax L5P Short Bed 2017-2025 Chevrolet 6.6 Duramax L5P Long Bed

    Fits: 2017-2019 Crew Cab Short Bed L5P Duramax Fits: 2017-2025 Crew Cab Long Bed L5P Duramax Part No: DIFSL5P1001 The FASS Drop-In Series Diesel Fuel System was engineered by FASS to be the most effective filtration solution for the L5P Duramax. Backed by our...
    $479.00
    $504.21
    $479.00
  • FASS Drop-In Fleet Filter Pack - FLP1000

    FASS Drop-In Fleet Filter Pack - FLP1000

    FASS Fuel Systems Drop-In Fleet Filter Pack FLP1000 Part No: FLP1000 Perfect for the shop or keeping your garage stocked, each FASS Fuel FLP3000 contains two (2) (XWS3002XL) Extreme Water Separator Filter and two (2) (CWS1010) Coalescing Water Separator! Designed with convenience in mind,...
    $112.10
    $118.00
    $112.10
  • FASS Drop-In Filter Pack - FP1000FASS Drop-In Filter Pack - FP1000

    FASS Drop-In Filter Pack - FP1000

    FASS Fuel Systems Drop-In Filter Pack FP1000 Part No: FP1000 Perfect for the shop or keeping your garage stocked, each FASS Fuel FP3000 contains one (1) (XWS3002XL) Extreme Water Separator Filter and one (1) (CWS1010) Coalescing Water Separator! Designed with convenience in mind, our...
    $56.05
    $59.00
    $56.05
  • FASS Diesel Fuel Sump Kit | Universal

    FASS Diesel Fuel Sump Kit | Universal

    Part No: SK5501 Fitment: Universal Applications, Ford Powerstroke, GM Duramax and Dodge RAM Cummins: Installing a FASS Fuel System has NEVER been easier! Our all-new Return Style Fuel Tank Sump Kit only requires a single hole to be drilled into the fuel tank, and...
    $169.00
    $177.89
    $169.00
  • FASS Billet Fuel Filter Cap | 2017-2025 Chevrolet 6.6 Duramax L5PFASS Billet Fuel Filter Cap | 2017-2025 Chevrolet 6.6 Duramax L5P

    FASS Billet Fuel Filter Cap | 2017-2025 Chevrolet 6.6 Duramax L5P

    Part No: BFC1001K The OEM plastic fuel filter cap on your L5P Duramax is susceptible to rounding off when replacing the water separator and cracking during extreme cold weather conditions. Upgrade your OEM plastic fuel filter housing or FASS Drop-In Series with our Billet...
    $110.20
    $116.00
    $110.20
  • Exergy Stock Fuel Injectors (Set of 8) | 2017+ Chevrolet 6.6 Duramax L5P

    Exergy Stock Fuel Injectors (Set of 8) | 2017+ Chevrolet 6.6 Duramax L5P

    Core Return: Exergy requires that all cores be returned within 30 days from original purchase of product. If you fail to return the core(s) within 30 days, you will be charged in full for the core(s) ($150 per injector). Cores that have missing and/or...
    $2,400.00
    $2,400.00
  • Exergy Fuel Injectors 60% Over (Set of 8) | 2017+ Chevrolet 6.6 Duramax L5P

    Exergy Fuel Injectors 60% Over (Set of 8) | 2017+ Chevrolet 6.6 Duramax L5P

    Are you looking for an increase in power without sacrificing drivability or reliability? Well, look no further than our 60% over fuel injectors!   The nozzles are enlarged using abrasive flow honing technology and are hydraulically flow matched to less than 1%. Each nozzle...
    $4,120.00
    $4,120.00
  • Exergy Fuel Injectors 30% Over (Set of 8) | 2017+ Chevrolet 6.6 Duramax L5P

    Exergy Fuel Injectors 30% Over (Set of 8) | 2017+ Chevrolet 6.6 Duramax L5P

    Have your original or aftermarket injectors left you stranded? Are you looking for an increase in power without sacrificing drivability or reliability? Well, look no further than our 30% over fuel injectors!   At 30% over stock, these are an excellent upgrade for close...
    $3,904.00
    $3,904.00
  • Exergy Fuel Injectors 200% Over w/Internal Modification (Set of 8) | 2017+ Chevrolet 6.6 Duramax L5P

    Exergy Fuel Injectors 200% Over w/Internal Modification (Set of 8) | 2017+ Chevrolet 6.6 Duramax L5P

    So, you've made some power but now you want more? Do you still want good drivability while running more competitive events? Well, look no further than our 200% over fuel injectors!    The nozzles are enlarged using inhouse micro EDM (Electrical Discharge Machining) and...
    $6,296.00
    $6,296.00
  • Exergy Fuel Injectors 100% Over (Set of 8) | 2017+ Chevrolet 6.6 Duramax L5P

    Exergy Fuel Injectors 100% Over (Set of 8) | 2017+ Chevrolet 6.6 Duramax L5P

    Do you want to edge out that Mustang at the track or put another 5' on the next truck? Are you looking for an increase in power without sacrificing drivability or reliability? Well, look no further than our 100% over fuel injectors!   The...
    $4,440.00
    $4,440.00
  • Exergy 14mm Stroker CP3 Pump - Race Series (LBZ Based) | 2017+ Chevrolet 6.6 Duramax L5P

    Exergy 14mm Stroker CP3 Pump - Race Series (LBZ Based) | 2017+ Chevrolet 6.6 Duramax L5P

    One of the biggest pumps on the market with a track record to prove it. A single CP3 pump that will easily support 1200HP and in some applications have gone up to 1350+HP on fuel only! Don’t get caught with dual pump issues when...
    $3,325.00
    $3,325.00
  • Exergy 12mm Stroker CP3 Pump (LBZ Based) | 2017+ Chevrolet 6.6 Duramax L5P

    Exergy 12mm Stroker CP3 Pump (LBZ Based) | 2017+ Chevrolet 6.6 Duramax L5P

    Looking for a single CP3 pump that will support up 1000+HP and drive like stock on your L5P? Do you want the capability of more power without the worry of a pump controller failing, a custom belt breaking, mount cracking, or even a second...
    $2,650.00
    $2,650.00

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