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Fuel Related | 2017-2019 GM 6.6 Duramax L5P

Model year 2017 marked some major changes for the Duramax fuel system. Finally, they forewent the status quo that had been hovering over this engine since 2001 with the only major change occurring in ... read more

FASS Adjustable Fuel Pressure Regulator DDP-FPR-1001 4.00 FASS Adjustable Fuel Pressure Regulator FASS Fuel Systems FPR1001 The FPR allows you to fine-tune your fuel pressure to the exacting requirements of many of today's diesel trucks. With many drivers running highly modified injection pumps (or two) and high output injectors, a standard pre-set lift pump does not do the job. This regulator from FASS allows the driver to set the pressure out of their lift pump to what their requirements are from 0-100 PSI. Glacier Diesel Power PushLok Fuel Pressure Sender Tee 3/8" & 1/2" GDP-3818-PLST-Main 0.00 Glacier Diesel Power PushLok Fuel Pressure Sender Tee 3/8" & 1/2" Glacier Diesel Power 3818-PLST Are you looking to monitor fuel pressure but have no way of tying into the fuel system to install your sending unit? This Pushlock features billet aluminum construction and is made in the USA to provide the perfect option. This simple "T" is available in either 1/2" or 3/8" line size and is tapped for 1/8" pressure senders. F-BOMB Diesel Fuel Additive | Fuel Bomb! FB-001-Main 0.00 F-BOMB Diesel Fuel Additive | Fuel Bomb! Fuel Bomb FB-001 Drop an F-Bomb on Bad Fuel Economy! F-Bomb Diesel Fuel Additive is a unique proprietary blend of chemicals to help your diesel run better and cleaner. Fuel Bomb: HELLFIRE +8 Cetane Booster Diesel Fuel Additive FB-002-Main 0.00 Fuel Bomb: HELLFIRE +8 Cetane Booster Diesel Fuel Additive Fuel Bomb FB-002 Diesel Power Product's F-Bomb Diesel Fuel Additive is a unique proprietary blend of chemicals to help your diesel run better and cleaner. Fuel-Bomb | Split case of F-BOMB/HellFire Diesel Fuel Additive (12 Bottles) FB-001_2-Case-Case 12.00 Fuel-Bomb | Split case of F-BOMB/HellFire Diesel Fuel Additive (12 Bottles) Fuel Bomb FB-001/2-Case-Case F-Bomb Diesel Fuel Additive is a unique proprietary blend of chemicals to help your diesel run better and cleaner. Fleetguard FF5320 2 Micron Fuel Filter FF5320 1.00 Fleetguard FF5320 2 Micron Fuel Filter Fleetguard Filters FF5320 Replace your remote fuel filter set up, glacier diesel MK filter set up, or your custom fuel filtration filter with the Fleetguard 2 Micron Fuel Filter FF5320 Fleetguard FS1001 Fuel/Water Separator FS1001 1.00 Fleetguard FS1001 Fuel/Water Separator Fleetguard Filters FS1001 Replace your water separator on your GDP glacier diesel power system, or custom system with the Fleetguard Fuel/Water Separator FS1001 Sinister Fuel Tank Sump Kit SD-UFS-02-20-Main 5.00 Sinister Fuel Tank Sump Kit Sinister Diesel SD-UFS-02-20
$ 177.99 2050-01-01
Diesel Power Products carries this fuel tank sump kit from SINISTER!
FASS 5/8" In Fuel Module Suction Tube Kit with Bulkhead Fitting DDP-STK-1003 5.00 FASS 5/8" In Fuel Module Suction Tube Kit with Bulkhead Fitting FASS Fuel Systems STK1003 Pull fuel from your fuel module / basket as the factory intended and avoid 1/4 tank issues! The FASS Fuel Systems Bulkhead Fitting are machined from 6061 T-6 Billet Aluminum and 5/8" Convoluted Suction Tube are designed to function as both a suction point and a fuel return port for your FASS Titanium Series lift pump. FASS Titanium Series Electric Fuel Heater Kit DDP-HK-1001 5.00 FASS Titanium Series Electric Fuel Heater Kit FASS Fuel Systems HK1001 Diesel Power Products carries the FASS Electric Fuel Heater Kit Fuelab Adjustable Bypass Regulator 4-12 PSI FL-50101 5.00 Fuelab Adjustable Bypass Regulator 4-12 PSI Fuelab 50101 Power Products carries the Fuelab Adjustable Bypass Regulator 4-12 PSI Fuelab Adjustable Bypass Regulator 10-25 PSI FL-50102 5.00 Fuelab Adjustable Bypass Regulator 10-25 PSI Fuelab 50102 Power Products carries the Fuelab Adjustable Bypass Regulator 10-25 PSI

Model year 2017 marked some major changes for the Duramax fuel system. Finally, they forewent the status quo that had been hovering over this engine since 2001 with the only major change occurring in the 2011 model years with the LML engine. The fuel system featured on the L5P could best be described as a 100% complete overhaul. Without going into a complete analysis, lets give you some of the highlights at least. Number one, a fuel pump from the factory. That's right, the main cause for fuel starvation, especially on modified Duramax engines, has been addressed with the addition of a factory lift pump. And we'd say its about time, as every single other manufacturer realized this years ago. Next, you won't be seeing any Bosch insignia on your fuel system.

Again, since 2001, they've been in bed with Bosch to deliver the high pressure fuel via common rail (and later piezo) injectors and a high pressure CP3 or CP4 injection pump. Well, GM and Bosch apparently had a divorce and Denso came knocking. The Bosch CP4 found on the LML engines has been replaced by a Denso HP4 that should eliminate the countless failures of the CP4. Why? Many would attribute the failures to the roller tappet design that would self destruct at the presence of any air where the HP4 uses a much more robust solid lifter design that is also a substantially simpler design. As previously stated, Denso is also supplying the injectors with a solenoid type that replaces the Bosch piezo units found in the 2011-2016 model years. This move wasn't necessarily due to a high failure rate of the piezo injectors, more so because the solenoid type work more cohesively with the HP4 and the rest of the fuel system.

Again, these are merely the highlights of the move from Bosch to Denso with basically every other facet of the injection system changing in some degree, as well. Now, the question at hand, what's to be improved from this system? Well, time will tell as far as the true weaknesses, but for those looking to produce power levels above stock, there is definitely room for improvement. While a lift pump has indeed been integrated from the factory, its output is sub par and will need an upgrade to allow for fuel delivery to match most of the programmers on the market. The HP4 is absolutely more robust than a CP4 in terms of durability, but again, not capable of delivering sustained rail pressure for maximum power potential. How far will fuel upgrades take you and your L5P Duramax to meet your power goals?

As always, if you are having any issues determining the right parts for you and your truck, do not hesitate to give us a call or send an e-mail to [email protected] and we would be happy to assist.

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