Complete Marine Fuel System Renewal — 4-Injector Set for Yanmar 4JH3 Series Engines

The Yanmar 4JH3 is one of the most trusted inboard diesel engines in the marine world — powering sailboats and motorboats that demand reliability far from shore. A worn injector at sea isn’t just an inconvenience; it’s a safety risk. This matched set of 4 OEM-equivalent fuel injectors (729692-53100) covers all cylinders of the 4JH3-DTE, 4JH3-HTE, and 4JH3-HTZA in a single service, restoring factory fuel delivery so your engine starts clean, runs smooth, and delivers the power you need when it matters most.

✅ Direct-Fit Compatibility

• Yanmar Marine Engines: 4JH3-DTE, 4JH3-HTE, 4JH3-HTZA
• Bolt-on replacement — no modifications required
• Suitable for commercial and recreational marine applications

🔧 Why This Set Delivers

• OEM-matched spray pattern — precise fuel atomization for complete combustion, reduced smoke, and better fuel economy underway
• 100% new aftermarket — not rebuilt or remanufactured; every injector starts with a full service life
• Matched set of 4 — uniform injection pressure across all cylinders; eliminates the power imbalance of mixing worn and new injectors
• Covers all 4JH3 variants — one part number fits the DTE, HTE, and HTZA suffix models for confirmed fitment confidence
• Reliable cold-start performance — consistent opening pressure for dependable starts in cold morning marina conditions
• No dealer markup — OEM-equivalent quality at aftermarket pricing

📦 What's Included

• 4 × Fuel Injector (729692-53100)

🔑 Key Specs

• Part Number: 729692-53100
• Condition: 100% New Aftermarket
• Quantity: Set of 4 (full engine coverage)
• Fitment: Yanmar 4JH3-DTE / 4JH3-HTE / 4JH3-HTZA marine engines

Your engine is your lifeline on the water. Don’t compromise — order today, in stock and ready to ship.