1542140 Insert | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta precombustion-chamber insert fitted in the cylinder head of selected 40-series indirect-injection diesel engines. The insert forms the small combustion chamber around the injector nozzle and controls the passage between the chamber and the main cylinder. One insert is used per cylinder, so a complete six-cylinder engine normally requires six. Installation requires correct cylinder-head machining, protrusion and seating checks.

🚤 Compatibility

Typically suits:

• Volvo Penta MD40A
• Volvo Penta TMD40A
• Volvo Penta TMD40B
• Volvo Penta TMD40C
• Volvo Penta AQAD40B
• Volvo Penta AQAD40A
• Volvo Penta AQD40A
• Volvo Penta TAMD40A
• Volvo Penta TAMD40B

• Engine Family: MD, TMD, AQAD, AQD, TAMD

⚙️ Key Features

• OEM Volvo Penta part number 1542140
• System group: Engine
• Net weight: 0.04 kg
• Fits MD40, TMD40, AQD40, AQAD40 and TAMD40 series marine diesel engines
• Supplied as an individual component
• Engine type: Volvo Penta inline six-cylinder indirect-injection diesel

🔌 Function

The insert fits into a machined bore or housing within the engine to provide a correctly sized and located seating or wear surface for the mating component. It allows that interface to be renewed as a serviceable part rather than replacing the larger assembly.

⚠️ Common Signs of Failure

• Visible wear, scoring or ovality on the working surface
• Loose fit or movement within its housing bore
• Corrosion, pitting or scale build-up on the insert
• Misalignment or poor sealing of the component it locates
• Cracking or deformation found during engine overhaul inspection

🛠️ Service Notes

• Work clean — anything fitted into the fuel side goes in with the seat and the surrounding area free of dirt, and openings kept capped while they are apart
• Fit new sealing rings, washers or gaskets wherever the original used them, lightly lubricated so they seat without rolling
• Check the bore or seat the insert fits into for corrosion, scoring or distortion before fitting; an insert seals only as well as the surface it beds on
• Tighten to the figures and in the order given in the workshop manual for your engine — an insert is easily distorted by overtightening
• Bleed the fuel system afterwards and check for leaks with the engine running before the boat is used

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 1545287 related cylinder-head assemblies
• 858996 related cylinder-head assemblies
• 3803009 later / replacement cylinder-head assembly
• 1545174 related valve seats
• 1545177 related valve seats
• 419653 → 3582561 related valve guide
• 859155 related cylinder-head gasket
• 858503 related cylinder-head gasket
• 1542154 injector heat shield
• 1542159 injector washer

📦 Condition

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