21141358 Adapter | Genuine Volvo Penta Part

🔧 Product Description

Brand-new genuine Volvo Penta machined adapter for the tachometer/speed sensor on the D16C1-E MG electrical system. It locates the sensor at the correct depth and thread interface relative to the rotating speed target.

🚤 Compatibility

Typically suits:

• Volvo Penta D16C1-E MG
• Volvo Penta D16C1-F MG
• Volvo Penta D16C2-E MG
• Volvo Penta D16C2-F MG
• Volvo Penta D16C-D MH
• Volvo Penta D16C1-E MH
• Volvo Penta D16C1-F MH
• Volvo Penta D16C2-E MH
• Volvo Penta D16C2-F MH

• Engine Family: D

⚙️ Key Features

• Dedicated adapter for tachometer sensor 3589140
• Correct thread and sensor stand-off
• Maintains the designed air gap to the speed target
• Rigid machined construction
• Adapter only; sensor and sealing parts are separate
• Engine type: Volvo Penta 16.1-litre electronically controlled marine generator diesel

🔌 Function

Mounts and positions the engine-speed sensor so the control system receives a reliable rotational-speed signal.

⚠️ Common Signs of Failure

• No or erratic rpm indication
• Engine-speed diagnostic fault
• Sensor contacting the target wheel
• Damaged adapter threads
• Oil or debris contamination around the sensor

🛠️ Service Notes

• Check the adapter against both of the parts it has to join before fitting — adapters are specific to an engine and its variant, and one that is close but not correct will not seat or seal properly
• Clean and inspect both mating faces or connector ends; grit, old sealant or corrosion on one side is the usual reason an adapted joint leaks or works intermittently
• Renew any O-ring, gasket or sealing washer belonging to the joint rather than reusing the old one, and lubricate rubber seals lightly so they slide into place instead of rolling or nipping
• Tighten threaded adapters to the figure given in the workshop manual for that connection; many go into aluminium or onto a soft seat and will distort if pulled up hard
• Where the adapter is a workshop tool, check it for thread wear and damage before use and never modify it to make something fit

🔄 Supersession & Cross Reference

OEM / Related Numbers

• Tachometer sensor 3589140

Other-Brand OEM Numbers

• VOE21141358

📦 Condition

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