874040 Control Unit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta control unit for the KAMD application, from the Ignition and Control Systems group. It weighs 1.161 kg and is listed for 2 applications across the KAD and KAMD series. It consolidates two earlier numbers, 3803465 and 873966, the latter catalogued earlier as a dataset. The KAMD marking is what separates it from control unit 874081, which is the KAD unit at 1.129 kg — only 32 grams apart, so the marking and part number are the only reliable guide.

🚤 Compatibility

Typically suits:

• Volvo Penta KAD44P
• Volvo Penta KAMD44P-A

• Engine Family: KAD, KAMD

⚙️ Key Features

• For the KAMD application
• 1.161 kg
• 2 applications across KAD and KAMD engines
• Supersedes 3803465 and 873966
• 873966 was catalogued earlier as a dataset
• Also supersedes Volvo part number 873910

🔌 Function

Holds the engine's control programme and governs fuelling and protection functions from the sensor inputs.

⚠️ Common Signs of Failure

• Engine failing to start or cutting out with no fuel or air fault found
• Warning lamps lit with no corresponding sensor problem
• Engine dropping into a reduced-power condition unprompted
• Corrosion or water marks inside the unit's connector
• Faults appearing only when the unit is hot

🛠️ Service Notes

• Check the KAMD or KAD marking against the engine before ordering — 874040 and 874081 are near-identical in weight and are not interchangeable
• Confirm supply, earth and connector condition before replacing the unit

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 874040 → Supersedes 3803465

OEM / Related Numbers

• 873966 earlier number superseded by this part
• 3803465 earlier number superseded by this part

📦 Condition

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