When it’s time for a Detroit injector replacement, a precision-remanufactured unit is the most reliable way to restore engine performance without paying full OEM retail. HD Injectors’ remanufactured Detroit Diesel fuel injectors are stripped to the core, rebuilt with new precision-engineered internals, and flow-tested on calibrated benches to match factory output — so your DD15, DD16, or Series 60 delivers the idle quality, power, and fuel economy it had the day it left the line.
Which Detroit Engines We Cover
We supply remanufactured and genuine OEM injectors for Class 8 heavy-duty trucks across the full range of on-highway Detroit Diesel platforms:
- DD13, DD15 and DD16 — HDEP engines (EPA10, GHG14, GHG17) powering the Freightliner Cascadia, Western Star, and vocational trucks
- Detroit Series 60 — both the 12.7L and 14.0L, including EGR and pre-EGR electronic unit injectors
- MBE 4000 — the 12.8L Mercedes-Benz/Detroit platform
- 7th (dosing) injectors for DD-platform aftertreatment systems
Don’t see your exact engine or emissions family? Send us your VIN or Detroit engine serial number and we’ll match the correct injector for your application before you order.
Why Remanufactured Detroit Injectors from HD Injectors
- Budget-friendly vs. new OEM pricing — with no compromise on fuel atomization or spray pattern
- Eliminate rough idle, misfires, and engine knock caused by worn nozzles and failing control valves
- Cut excessive smoke and restore clean, even combustion across every cylinder
- Recover lost fuel economy with calibrated flow rates and factory-spec opening pressures
- High-pressure leak tested and serialized for full traceability
- Rebuilt to OEM-equivalent specification using genuine Bosch components where applicable
Our Detroit Injector Remanufacturing Process
Every Detroit injector we sell is fully disassembled, ultrasonically cleaned, and inspected for wear before being rebuilt with new high-wear components — including nozzles, springs, control valves, and seals. Units are then flow-tested on Bosch or Hartridge equipment, pressure-tested, and spray-pattern verified before they ship. On DD15/DD16 and Series 60 injectors, we calibrate to the exact OE test plan so delivery rates and trim codes fall within factory tolerance.
Genuine OEM Detroit Injectors Also Available
Prefer a brand-new OEM unit? We also stock genuine Detroit Diesel / Bosch injectors, including the new OEM DD15 & DD16 fuel injector (part no. EA4600701387) for HDEP EPA10/GHG14/GHG17 engines. New OEM injectors ship with a complete seal kit and require no core return.
Ready to Order Your Detroit Injectors?
Shop our full catalog of remanufactured and OEM Detroit Diesel injectors and get factory-spec performance shipped from our Elk Grove Village, Illinois facility to anywhere in the U.S. Not sure which injector fits your Detroit engine? Submit our Make Sure It Fits form with your VIN or engine serial number and our team will confirm the correct part number before you buy — no guesswork, no wrong-part returns.
Detroit Injector Frequently Asked Questions
How long do remanufactured Detroit injectors last?
A properly installed remanufactured Detroit injector from HD Injectors is built to deliver OEM-equivalent service life — typically 150,000 to 500,000 miles depending on fuel quality, maintenance, and duty cycle. Using clean fuel and changing filters on schedule is the single biggest factor in injector longevity.
Do I need to replace all six Detroit injectors at once?
Not always, but it’s strongly recommended. DD13, DD15, DD16, and Series 60 engines run six injectors that wear at a similar rate. Replacing just one failed unit can leave you with mismatched flow rates, uneven cylinder balance, and a repeat repair. If your injectors have high mileage or you’re already under the valve cover, a full set is the more cost-effective long-term fix.
What is the "7th injector" on a Detroit DD13 or DD15?
The 7th injector is the aftertreatment (dosing) injector — it sprays fuel into the exhaust stream to raise temperatures during DPF regeneration and is separate from the six in-cylinder injectors. A failing 7th injector usually shows up as regen or dosing-related faults rather than a cylinder misfire, so it’s worth diagnosing on its own.
Will remanufactured Detroit injectors trigger fault codes like SPN 651–656?
No — a correctly matched, properly programmed injector should clear injector faults, not cause them. On DD-platform engines, SPN 651 through 656 correspond to cylinders 1 through 6, and these codes typically point to a wiring, connector, or injector issue on a specific cylinder. If a code persists after replacement, it almost always indicates a harness, calibration, or trim-code programming problem rather than a bad reman injector.
Do you carry genuine OEM Detroit (Bosch) injectors as well as remanufactured?
Yes. Alongside our remanufactured lineup we stock new OEM Detroit Diesel / Bosch injectors — including the DD15 & DD16 unit under part number EA4600701387. If you need genuine OEM for a warranty or spec requirement, just ask and we’ll confirm availability.
Do you offer a core return program?
Yes. Most remanufactured Detroit injectors carry a refundable core charge. Return your old units in the supplied packaging and we’ll credit the core once it’s received and inspected. New OEM injectors (such as EA4600701387) require no core.
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