When diagnostics point to a single failed injector on your Yanmar 3TNV84T or 4TNV88 engine, this direct-fit aftermarket replacement restores precise fuel delivery fast. Covering both the turbocharged 3TNV84T and the naturally aspirated 4TNV88 — compact diesel engines widely used in mini excavators, compact track loaders, skid steers, and utility equipment — this brand-new injector is precision-matched to OEM spray pattern and injection pressure specifications. Brand new, ready to install, no modifications required.

✅ Direct-Fit Compatibility

• Yanmar Engines: 3TNV84T (Turbocharged), 4TNV88
• Suitable for mini excavators, compact track loaders, skid steers, and utility equipment
• Bolt-on replacement — no modifications required

🔧 Product Highlights

• 100% Brand New Aftermarket: Not rebuilt or refurbished — starts with a full service life
• OEM-Spec Fuel Atomization: Precise spray pattern for clean combustion, reduced smoke, and better fuel economy
• Targeted Single-Unit Replacement: Ideal when diagnostics confirm one failed injector — no need to replace the full set
• Turbo & Non-Turbo Coverage: One part number fits both the turbocharged 3TNV84T and the 4TNV88 in a single listing
• Dual Part Number Format: Covers both 729642-53100 and 72964253100 for confirmed fitment regardless of source
• Protects Downstream Components: Restores proper fuel pressure to reduce stress on the injection pump and remaining injectors

📦 What's Included

• 1 × Fuel Injector (729642-53100 / 72964253100)

🔑 Key Specs

• Part Numbers: 729642-53100, 72964253100
• Condition: 100% New Aftermarket
• Quantity: 1 piece (single cylinder replacement)
• Fitment: Yanmar 3TNV84T (Turbo) / 4TNV88 engines

Please verify your engine serial number and existing part number before ordering. Contact us for fitment confirmation if needed.