Restore Full Power to Your Yanmar 4JH3 Marine Engine — All Four Cylinders at Once

Rough running, excessive smoke, or poor throttle response on your Yanmar 4JH3? Worn injectors are often the culprit. This complete 4-piece fuel injector set (Part# 729671-53101 / 72967153101) replaces all injectors across every cylinder simultaneously — restoring balanced, precise fuel atomization and giving your marine diesel the clean, responsive combustion it was built for.

Whether you're offshore, coastal cruising, or working a commercial vessel, your Yanmar 4JH3 deserves injectors that perform as a matched set — not a patchwork of old and new.

Fits:

• Yanmar 4JH3-TCE
• Yanmar 4JH3-TE
• Yanmar 4JH3CE1
• Yanmar 4JH3E

Why Choose This Set?

• ✅ Complete 4-piece set — replaces all cylinders at once for uniform fuel delivery and balanced combustion; eliminates cylinder-to-cylinder variation
• ✅ Dual OEM part number match — replaces both 729671-53101 and 72967153101 for verified fitment across all 4JH3 variants
• ✅ Precision spray pattern control — engineered to Yanmar specifications for optimal fuel-air mixing, injection timing, and engine responsiveness
• ✅ Consistent performance across sea states — maintains accurate delivery under variable marine loads, from idle in harbor to full throttle offshore
• ✅ Marine-grade durability — withstands sustained high-pressure cycling and thermal stress inherent to continuous marine engine operation
• ✅ 100% new, aftermarket quality — not remanufactured or refurbished

Specs:

• Condition: 100% New
• Type: Aftermarket
• Quantity: 4 Pieces (complete set)
• Part Numbers: 729671-53101 / 72967153101
• Application: Yanmar 4JH3-TCE, 4JH3-TE, 4JH3CE1, 4JH3E

Replacing injectors one at a time costs more in labor and leaves uneven wear across cylinders. This complete set gives your 4JH3 a fresh start — smoother power, better fuel economy, and cleaner exhaust from the first start. Order the full set today and get back on the water with confidence.