1542303 Nozzle | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta fuel injector nozzle, part number 1542303, from the fuel system group. It atomises pressurised diesel delivered by the injection pump into the combustion chamber, and is a wear item that directly affects starting, combustion quality and smoke levels. This nozzle is specified for the MD30, MD40, TD30, TD40, TD45 and AD/AQAD series marine and industrial diesel engines.

🚤 Compatibility

• Engine Family: MD, TMD, AD, AQAD, TD, D, TAMD, AQD
• HP Range: Approximately 90-165 HP
• Year Range: Approximately 1970s - 1980s

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 1542303
• System group: Fuel System
• Net weight: 0.04 kg
• Fits MD30, TMD30, TAMD30, TD30, MD40, TMD40, TAMD40, TD40, TD45, AD30, AD40, AQAD30, AQAD40, AQD40 and D45 series diesel engines
• Serviceable wear component replaced as part of routine injector overhaul
• Engine type: Volvo Penta mechanically injected marine diesel fuel system

🔌 Function

The nozzle is the final element of the injector, spraying finely atomised fuel into the combustion chamber at the correct pressure, timing and spray pattern. Correct atomisation is essential for clean, complete combustion and stable engine running.

⚠️ Common Signs of Failure

• Hard starting or extended cranking, particularly when cold
• Black or grey exhaust smoke and increased fuel consumption
• Rough idle, misfire or uneven running on one cylinder
• Knocking or hammering combustion noise from a dribbling or stuck nozzle
• Loss of power and elevated exhaust temperatures under load

🛠️ Service Notes

• Work scrupulously clean — a nozzle is a precision component with fine machined orifices, and grit carried in on a fingertip or a rag is enough to ruin it
• Never poke, ream or wire-brush the holes or the seat; if a nozzle is blocked or its spray pattern is disturbed, renew it
• Cap or plug the open fuel or oil way while the nozzle is out so nothing can drop into the passage
• Fit new sealing washers, seals or O-rings, clean the seat in the housing and check that seat is undamaged before the nozzle goes back
• Tighten to the figure and sequence given in the workshop manual for your engine; a nozzle pulled down unevenly or over-tightened will distort and leak

🔄 Supersession & Cross Reference

OEM Supersession Chain

• Bosch 0 434 250 063 / DN0SD193 recognised direct nozzle cross-reference
• Denso 093400-1310 recognised direct nozzle cross-reference

Other-Brand OEM Numbers

• Bosch 0 434 250 063
• Bosch DN0SD193 / DN 0 SD 193
• Denso 093400-1310
• Bosch: DN0SD 193

Aftermarket / Verified Equivalents

• Orbitrade Marine: 17303
• Seven Diesel: 40193

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TMD40A, TMD40B, TMD40C
• Volvo Penta AQAD40B, AQAD40A
• Volvo Penta D45BPP, D45A
• Volvo Penta TAMD40A, TAMD40B
• Volvo Penta AD30A
• Volvo Penta AD40B
• Volvo Penta AQAD30A
• Volvo Penta AQD40A
• Volvo Penta MD30A
• Volvo Penta MD40A
• Volvo Penta TAMD30A
• Volvo Penta TD30A
• Volvo Penta TD31ACE
• Volvo Penta TD40A
• Volvo Penta TD45B
• Volvo Penta TMD30A