874117 Glow Plug | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta air pre-heater kit for 12 volt electrical systems, from the Starting System group, listed as fitting TMD31/41, TAMD31/41 and AD31/41 engines. The accessories catalogue describes it as the kit for engines that have to start in low ambient temperatures: it contains two glow plugs that are installed in the intake pipe and are switched on with the ignition key through a relay, warming the intake air before cranking. It weighs 0.705 kg, covers 18 applications across the AD, D, TMD, HS, TAMD and KAMD series, and supersedes part number 860935, which was catalogued earlier as a conversion kit.

🚤 Compatibility

Typically suits:

• Volvo Penta AD41D
• Volvo Penta D41D
• Volvo Penta TMD31D
• Volvo Penta TMD41D
• Volvo Penta AD31D
• Volvo Penta AD31D-A
• Volvo Penta AD31XD
• Volvo Penta HS1A
• Volvo Penta TAMD41D
• Volvo Penta TAMD41P
• Volvo Penta TAMD31M
• Volvo Penta TAMD31D
• Volvo Penta KAMD44P-B
• Volvo Penta KAMD44P-C
• Volvo Penta KAD44P
• Volvo Penta KAD44P-B
• Volvo Penta KAD44P-C
• Volvo Penta KAMD44P-A

• Engine Family: AD, D, TMD, HS, TAMD, KAMD, KAD

⚙️ Key Features

• Contains two glow plugs fitted in the intake pipe
• Switched on with the ignition key through a relay
• For 12 volt electrical systems
• Fits TMD31/41, TAMD31/41 and AD31/41 engines
• 0.705 kg
• Supersedes 860935
• Activated from the ignition key through a relay
• Fits: TMD31/41, TAMD31/41, AD31/41

📋 Kit Contents

• Glow plug, intake pipe - 2 off

🔌 Function

Warms the intake air before cranking so a cold engine will fire and run cleanly from the first attempt.

⚠️ Common Signs of Failure

• Hard cold starting with heavy white smoke until the engine warms
• Pre-heat warning lamp not illuminating or staying on
• Element open circuit or visibly burnt out
• Terminals corroded or arced at the element connection
• Pre-heat relay clicking with no current drawn

🛠️ Service Notes

• Never use start spray or starting gas on an engine fitted with glow plugs - the catalogue carries this as a warning
• Confirm the system is 12 volt, as this kit is not for a 24 volt installation
• Check the relay and the heavy supply cable before condemning the glow plugs
• Warning: never use start spray or gas on engines equipped with glow plugs

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 874117 → Supersedes 860935

OEM / Related Numbers

• 860935 earlier number superseded by this part

📦 Condition

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