Remanufactured injector, cross-ref 729209-53200, 4TNE88. Bench-tested before shipment.
Quote within 24 hours. Send a photo of your nameplate and we will confirm the exact match.
729209-53200 is supplied as a remanufactured replacement injector. Cross-reference numbers: 729209-53200, 4TNE88. Application recorded for this part: Yanmar Yanmar Yanmar. In a common rail system the injector is the component that actually controls combustion. It holds back fuel at rail pressure and lifts for only a few milliseconds at a time, metering the exact quantity and breaking it into a fine spray so the charge ignites cleanly. When delivery drifts, the engine does not usually stop — it simply starts to burn fuel badly. Typical signs are poor starting hot or cold depending on whether the unit is weeping or sticking, an idle that hunts or sounds uneven, smoke under acceleration, and sometimes a smell of diesel in the oil where an injector is leaking internally. A back-leakage comparison across the set is the cheapest meaningful test: uneven return between cylinders points at the failing unit. Follow it with a cut-out test to confirm which cylinder actually stops contributing. Fit as a matched set rather than singly — one new injector among worn neighbours reproduces the uneven running you set out to cure. New sealing washers every time, clean seats, correct torque, and where applicable, program the injector codes into the ECU once fitted. Rebuild process: full teardown and measurement first, then replacement of all wear components, machining back to specification where required, followed by calibration and bench testing. The difference between this and a cleaned used part is the measurement and test record — we hold every unit to the specification for the part number, not just to 'it runs'. Test sheets available on request, and every unit ships with a 12-month warranty.
| Part number | 729209-53200 |
| Condition | Remanufactured (not a genuine OEM new part) |
| Cross-reference | 729209-53200, 4TNE88 |
| Application | Yanmar Yanmar Yanmar |
| Process | Disassembled, cleaned, measured, wear parts replaced, machined to specification |
| Bench test | Delivery, return flow, opening pressure and leakage recorded before dispatch |
| Warranty | 12 months |
How to tell a failing common rail injector from compression, turbo and air-side faults — and why the cheap checks come first.
Read the guide →Three very different things are sold under similar descriptions. Here is what separates them, and what to ask before you buy.
Read the guide →What the digits on your injector actually mean, why several numbers fit the same part, and how to avoid ordering the wrong one.
Read the guide →
