Howo Injector

Premium-quality Howo Injector engineered for extreme durability. Trusted by fleets worldwide — experience zero compromise with certified Sinotruk HOWO components. Your journey to unmatched performance starts here.

Sinotruk Howo Injector

The fuel injector is the heart of your diesel engine’s combustion system. A genuine Howo Injector ensures precise fuel atomization, consistent injection timing, and optimal power output. As part of our premium Howo truck parts lineup, each Howo Injector is engineered for WD615, D12, and MC series engines – delivering 1600–2000 bar injection pressure and multi‑hole nozzles for complete combustion.

Upgrading to new Howo Injector units reduces black smoke, restores fuel economy, and eliminates rough idling. Whether you operate a Howo T7H, A7, or TX, our injectors are 100% tested on Bosch test benches to meet OEM flow tolerances. Stop chasing power loss with cheap rebuilds – choose precision that lasts.

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Essential Functions of a Genuine Howo Injector

Precise Fuel Atomization

Multi‑hole nozzle (6–8 holes) with micro‑lapped orifices creates a fine fuel mist that mixes thoroughly with air, reducing unburned hydrocarbons and smoke.

Stable Injection Timing

Hydraulic or electronic (Euro V/VI) injectors maintain accurate start of injection across all RPM ranges, eliminating knock and maximizing torque.

Consistent Flow Rate

Each Howo Injector is flow‑matched to within ±2.5% of the nominal value, ensuring equal cylinder contribution and smooth engine operation.

High Pressure Endurance

Designed for common‑rail systems up to 2000 bar (Euro V/VI) or unit pumps up to 1200 bar (mechanical). Wear‑resistant needle and seat for long life.

Technical Specifications – Howo Injector by Engine

ParameterMechanical (WD615 / D12)Common‑Rail (MC11/MC13)
Injection TypeUnit pump / mechanicalCommon‑rail solenoid / piezo
Max Injection Pressure1200 bar2000 bar
Number of Nozzle Holes5 or 6 holes7 or 8 holes
Static Flow (cc/30 sec)280–320350–420
Injection Angle150° ± 2°145° / 153°
Solenoid Resistance (common‑rail)N/A0.6–0.9 Ω @ 20°C
OEM Part Number SampleVG1246070035VG1540080042 / FS20123

OE cross‑reference: For most Howo 7 / A7 with WD615.67/68 engines, use injector VG1246070035 (mechanical). For D12 engines: VG1540080042. For MC11/MC13 common‑rail: FS20123, 201V36001-0001. Always confirm by engine serial number.

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Compatible Sinotruk Howo Models

Howo 7 / A7 / T7H (WD615, D12)

Mechanical injectors (VG1246070035 etc.) fit all Howo trucks with unit pump injection. Direct replacement for 336–420HP engines built before 2015.

T7H, TX, Sitrak C7H (MC11, MC13)

Common‑rail injectors for Euro V/VI engines. Also fits certain HOWO 2015+ models. Confirm injector type before ordering.

Why Choose Our Howo Injector

OEM Bosch Technology
Licensed manufacturing using Bosch calibration standards – 100% flow tested.
Precision Matched Sets
Injectors are flow‑matched to ±2.5% variance – perfect for cylinder balance.
Global Stock Availability
Warehouses in Shanghai, Dubai, Houston – express shipping to 80+ countries.
24/7 Technical Support
Our diesel experts help with injector coding, ECU adaptation, and installation.
Fleet & Workshop Pricing
Volume discounts for 12+ injectors – request a quote.
12‑Month Warranty
Free replacement for any manufacturing defect (nozzle sticking, body crack).

Real Customer Experiences

“Replaced all 6 injectors on my T7H with genuine Howo Injector. Idle is now smooth, black smoke gone, and fuel consumption dropped 12%. Worth every dollar.”

– Mikhail, Fleet Owner, Russia

“We ordered a set of mechanical injectors for WD615. They arrived with calibration reports and all new copper seals. Engine runs like new again.”

– Carlos, Transport Manager, Peru

“The common‑rail injectors for our MC13 were a perfect match. The online help with injector coding was excellent. Highly recommended supplier.”

– Li Wei, Workshop Supervisor, China

“No more hard starting in the morning. These injectors restored full power to my old Howo 371. Fast shipping to Nigeria.”

– Ade, Owner‑Operator, Nigeria

FAQs – Howo Injector

1. How do I know if my Howo Injector is failing?
Symptoms: rough idle, white/black smoke, hard starting, increased fuel consumption, knocking noise from specific cylinders. An injector return flow test can confirm.
2. Can I replace just one injector or should I replace all?
For mechanical engines, individual replacement is fine if flow‑matched. For common‑rail, replace all at once to maintain balance and performance.
3. What is the typical lifespan of a Howo Injector?
With clean fuel and regular filter changes, 300,000–500,000 km. Contaminated fuel can kill injectors in weeks.
4. Do common‑rail injectors need coding after installation?
Yes, for MC11/MC13 engines, you must enter the 6‑digit IQA code into the ECU using diagnostic software. We provide instructions.
5. Can I use remanufactured injectors?
We recommend new genuine units. Reman units often have unmatched flow or reused nozzles, leading to short life.
6. What torque should be used for injector hold‑down bolts?
Mechanical injector: 55‑60 Nm. Common‑rail clamp: 20‑25 Nm + 90°. Over‑tightening can crack the injector body.
7. How to identify a counterfeit Howo Injector?
Genuine units have laser‑etched part number, Bosch or Delphi logo, and a QR code. Counterfeits have rough machining and mismatched o‑rings.

Troubleshooting Injector Problems

White smoke at idle (unburnt fuel)
→ Retarded injection timing or worn nozzle tip. Check injection pump timing; replace injector if return flow >50% of delivery.
Black smoke under acceleration
→ Over‑fueling due to stuck nozzle or incorrect calibration. Perform injector leak‑off test and replace faulty units.
Rough idle that smooths out at high RPM
→ Uneven injector flow. Replace the set with flow‑matched Howo Injector units.
Knocking noise from one cylinder
→ Needle valve sticking or leaky nozzle. Replace injector immediately to prevent piston damage.

Quick Resource Hub

Catalog PDF

Install Video

Injection Planner

Genuine Check

Why a High‑Quality Howo Injector is Critical for Your Diesel Engine – Modern diesel engines depend on ultra‑precise injection. A worn or clogged injector can cause incomplete combustion, washing down cylinder walls, diluting engine oil, and damaging the DPF (for Euro V/VI). Our genuine Howo Injector units are manufactured using hardened stainless steel and diamond‑lapped nozzle seats to guarantee leak‑free operation. For common‑rail systems, the solenoid or piezo actuator response time is within 100 microseconds, enabling multiple pilot injections that reduce combustion noise. Mechanical injectors feature a two‑stage spring design that controls opening pressure precisely.

All units are shipped in sealed anti‑static packaging with new copper washers and o‑rings. We also provide injector removal tools and a special puller to avoid damaging the cylinder head. For large fleets, we recommend annual injector testing using our Bosch EPS 815 test bench service – we can test and report on flow, return leakage, and spray pattern. Upgrading to new Howo Injector units not only restores lost power but can improve fuel efficiency by 8‑15%. Protect your investment – install only genuine parts. Contact us for a quote on full sets (6 or 12 pieces) with free coding for common‑rail ECUs.

Need immediate assistance selecting the right injector? Send us your engine model and VIN. Our team will match the exact OE number within 2 hours. Genuine Howo Injector – precise power, every stroke.

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