Denso is Toyota's original equipment supplier for fuel injection systems, manufacturing components to exacting standards that have made Toyota legendary for reliability. This genuine Denso injector for Toyota 1HZ engines is the same unit fitted at the factory, designed to deliver consistent performance across the long service life these engines are known for. Each 1hz injector undergoes rigorous testing before leaving the Denso facility, including spray pattern verification and pressure testing to meet Toyota's specifications.
Includes nozzle washer, leak-off washer, and heat shield with each injector.
Vehicle Fitment
Suits Toyota Landcruiser fitted with 1HZ diesel engines from 1997 through to 2006 models.
Why the 1HZ Deserves Quality Parts
The 1HZ is one of Toyota's most bulletproof diesel engines, known for running hundreds of thousands of kilometres when properly maintained. These mechanically-injected engines are simpler than modern common rail systems, but that doesn't mean the injectors are any less important. The 093500-6890 injector delivers fuel at precise intervals to maintain the smooth, reliable power the 1HZ is famous for. When 1hz injectors start wearing out, you'll notice white or blue smoke at startup, rough idling that doesn't smooth out, hard starting even when the engine's warm, and a noticeable drop in power under load. These symptoms tell you it's time for fresh injectors.
Genuine Denso vs Aftermarket
There's a significant difference in build quality between genuine Denso units and cheaper alternatives. The 093500-6890 is manufactured with hardened steel components that resist wear from constant fuel flow and combustion pressure. The nozzle holes are laser-drilled to exact dimensions, creating the proper spray pattern for efficient combustion. Aftermarket injectors often use softer metals that wear quickly and inconsistent manufacturing that produces irregular fuel delivery. Given how long most people keep their Landcruisers, investing in genuine parts makes sense. You're not replacing injectors every few years in these engines, so do it right the first time.
What Causes Injector Wear
Contaminated fuel is the main enemy of diesel injectors. Even on the mechanically-injected 1HZ, dirty fuel causes premature wear on the precision components inside. Water contamination is particularly damaging, causing rust and corrosion that destroys the tight tolerances these injectors need. Regular fuel filter changes are essential. If you're running your Cruiser in remote areas or using fuel from questionable sources, carry spare filters and change them more frequently. The few dollars spent on filters prevents thousands in injector repairs.
Installation Tips for 1HZ Injectors
The 1HZ uses a different injection system than modern common rail engines, but proper installation still matters. When fitting the 093500-6890, make sure the copper sealing washers are properly seated. These washers prevent combustion gases from escaping around the injector body. Torque the injector hold-down bolts to specification—these engines have been around long enough that the torque specs are well documented. Don't forget to fit the heat shield that comes with each injector. It protects the injector body from excessive combustion chamber heat.
After installation, bleed the fuel system properly. Air in the fuel lines will cause rough running and make you think the new 1hz injectors aren't working correctly. Take your time with this step. The 1HZ is a forgiving engine, but it still needs clean fuel delivery to run properly.
Warranty
Direct replacement with OE fitment and full statutory warranty. Each injector includes nozzle washer, leak-off washer, and heat shield for complete installation.
