English 
8-98177447-0 8-98177448-0 1 Set Fuel Injector Harness for Hitachi ZX330-3 Isuzu 6HK1 Engine
If diagnosis has led you to the wiring, the 8-98177447-0 8-98177448-0 Set Fuel Injector Harness gives you a complete, new harness for Hitachi ZW220-HCMF, ZW250, ZW250-HCMF, ZX330-3, ZX330-3F, ZX350-3-AMS excavators instead of a patchwork of repairs on old, brittle wire.
Engine reference: 6HK1. Please confirm your engine model along with the machine model when checking fitment.
Why This Harness Matters
Sitting under the valve cover or alongside the cylinder head, the injector harness works in one of the hottest and oiliest places on the engine. It delivers the high-current firing signals the injectors need, cylinder by cylinder, thousands of times a minute.
On a modern diesel, each injector opens on a precisely timed electrical pulse from the ECM. The injector harness carries those pulses, so its condition directly decides whether fuel is delivered at the right moment and in the right amount to each cylinder.
Hitachi ZAXIS and EX series machines combine electronic engine control with electronically managed hydraulics, so both systems depend on sound wiring to deliver their rated performance.
Before and During Installation
- Clean the area around the valve cover thoroughly before opening it, so no dirt reaches the injectors.
- Note the cylinder order of each injector lead before disconnecting.
- Inspect injector terminals and nuts; tighten to the specified torque.
- Replace the valve cover gasket and any pass-through seals while you are in there.
- Clear codes and check that the engine runs smoothly on all cylinders.
Signs Your Harness Needs Replacing
Common warning signs are:
- Injector circuit fault codes on the monitor
- One or more cylinders misfiring
- Hard starting and reduced power under load
- Rough idle and increased engine vibration
If these symptoms persist after checking fuses, batteries and grounds, the wiring itself is the next thing to suspect.
Construction and Quality
Each harness is produced under strict quality control, with wire gauges, colours and connector types matched to the original specification. Terminals are crimped for secure contact, and the bundle is protected with sleeving where the original used it.
Looking After Your Wiring
Replace damaged clamps and protective sleeving whenever you find them. A harness that is allowed to move against the frame will wear through eventually, no matter how good the wire is.
Why Full Replacement Pays Off
Splicing a damaged section can get a machine moving again, but each joint is a new point of failure. Old wire around the repair is usually just as aged as the part that broke, so the next fault is often not far away. A complete new harness resets the clock on the entire circuit.
Specs at a Glance
- Part Name: Set Fuel Injector Harness
- Part Number: 8-98177447-0, 8-98177448-0, 8981774470, 8981774480
- Engine: 6HK1
- Condition: Aftermarket new
- Product Weight: 2 kg / 4.41 lbs
- Brand: TOPARTS
- Feature: Matches original routing and length; durable, heat-resistant insulation
Compatible Models
For Hitachi Excavator：ZW220, ZW220-HCMF, ZW250, ZW250-HCMF, ZX330-3, ZX330-3F, ZX350-3-AMS,ZX350H-3, ZX350H-3F, ZX350K-3, ZX350K-3F, ZX350L-3, ZX350LC-3-HCME,ZX350LC-3F-HCME, ZX350LC-3FAMS, ZX350LC-5B, ZX350LCN-5B, ZX400LCH-3, ZX400W-3 For Isuzu 6HK1 Engine
Shipping and Payment
- Payment Method: PayPal, Stripe, Credit card, Visa, etc.
- Shipping Method: DHL, FedEx, UPS, TNT, USPS EMS, etc.
- Track Your Order: An email containing the tracking number with a link will be sent to you as soon as it ships.
Note: Please verify your part number and match our product pictures to your original item before ordering. If you have any questions, please feel free to contact us. Thanks.
