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Call or Text (352) 722-5295Injectors on the 2017-2019 Ford 6.7L Powerstroke
Ford fits the 2017-2019 6.7L with Bosch 19 mm piezoelectric injectors using an 8-hole nozzle, with the nozzle revised for 2015-2019. They are fed by twin rails at up to roughly 30,000 psi and can deliver up to five injection events per cylinder per cycle, including twin pilot injection. These are quick-firing injectors, and in stock form they support 700-plus rwhp when the fuel system can keep them fed. The remanufactured injectors from Alliant Power and XDP come with the bolt and line included and are split into two versions by cylinder position.
What fails and why
Two problems send owners shopping for injectors. The big one is contamination from the CP4.2. On low-lubricity ULSD, the pump's internal cam follower can lose contact with the cam lobe and wear, and the metal it sheds goes straight into the rails, injectors and lines. After that kind of failure the injectors are replaced as a set, along with both pumps, every fuel line and the rails, and the tank is removed and cleaned. The smaller problem is stiction, where deposits make an injector stick. It shows as white smoke at startup and misfire, and a cleaner is the first step before replacement. Water in the fuel can also cause white smoke, so rule out fuel contamination before you blame an injector.
New, reman or clean first
If the symptom is white smoke at startup with a misfire and the fuel system is clean, start with an injector cleaner before buying hardware. If the CP4.2 has failed, you are buying a full set, and the choice is new or remanufactured. Dynomite Diesel and Exergy Performance offer both, and Dynomite also sells single injectors in new and reman form for one-off replacements. Contamination kits, with or without the pump, cover the bigger repair. As for upgrades, the stock injector is rarely the first limit: it supports 700-plus rwhp when properly fed, while the CP4.2 cannot hold rail pressure at long injector durations. On high-power builds, fuel supply is the bottleneck, not the injector.
What we carry
Alliant Power offers the AP67002 (cylinders 1-2-7-8) and AP67003 (cylinders 3-4-5-6) reman injectors with bolt and line, AP0087 and AP0088 injection line and O-ring kits, and the AP57002 and AP57002NP contamination kits. XDP matches that with the XD491 (cylinders 1-2-7-8) and XD490 (cylinders 3-4-5-6) reman injectors with bolt and line, plus the XD516 and XD613 contamination kits. Dynomite Diesel sells the DDPNFD6715 brand-new and DDPFD6715 reman injectors, singly or as sets, and Exergy Performance has new and reman injector sets plus the E05 40101 seal kit (O-ring and copper gasket, set of 8) and the E05 40111 return port O-ring. MAHLE covers the GS33703 injector seal kit and GS34039 O-ring kit, SPE Motorsport offers the S100116 injector hold down kit and the DKT171967 contamination kit, and S&S Diesel Motorsport injectors round it out. See every brand on our main injectors page.
Fitment notes
Order by cylinder position when you buy the reman injectors with bolt and line: the Alliant and XDP units come in one version for cylinders 1, 2, 7 and 8 and another for cylinders 3, 4, 5 and 6. The Alliant, XDP and Dynomite injectors are listed for 2015-2019, matching the revised nozzle, while the Exergy sets and S&S injectors list 2011-2019. Seal and O-ring kits run wider, like the MAHLE GS33703 for 2011-2021 and GS34039 for 2011-2022. Parts for 2020-and-later trucks are a different system: those engines run 36,000 psi with a different calibration and hardware set, so stay with listings that cover 2017-2019. Chassis cab F-350, F-450 and F-550 trucks differ from pickups in many parts, so verify by VIN when in doubt.
Frequently asked questions
Do I have to replace all eight injectors at once?
After a CP4.2 failure, yes. The pump's metal debris reaches every injector, and the repair replaces all eight as a set along with the lines and rails. For a single injector problem on an otherwise clean system, Dynomite sells new and reman singles, and the Alliant and XDP reman units are sold by cylinder position.
What causes white smoke at startup on a 2017-2019 6.7L Powerstroke?
One cause is injector stiction from deposits, which shows as white smoke at startup along with a misfire; a cleaner is the first step before replacing injectors. Water contamination in the fuel can also cause white smoke, and a water-dispersant additive addresses that.
Do I need bigger injectors to make more power?
Usually not as the first step. The stock piezo injectors are quick-firing and support 700-plus rwhp when fed properly. The limit on this platform is the CP4.2, which cannot hold rail pressure at long injector durations, so high-power builds add a second pump or a stroker CP4.2.
What does cylinders 1-2-7-8 mean in the listing title?
The Alliant Power and XDP reman injectors come with the bolt and line attached, and they are sold in two versions by cylinder position: one for cylinders 1, 2, 7 and 8, and one for cylinders 3, 4, 5 and 6. Order the version that matches each position you are replacing, or both versions for a full set.
Not sure what fits? Call the shop at the number in the header, or use the fitment checker on any product page. We install everything we sell.