21126692 Temperature Sensor | Genuine Volvo Penta Part

🔧 Product Description

A threaded exhaust-gas temperature sensor used by the engine ECU and aftertreatment system. The probe measures gas temperature at the assigned exhaust location so fuel dosing, catalyst protection, alarm logic and derating can be controlled accurately.

🚤 Compatibility

• Engine Family: D

Full model list at the end of this description.

⚙️ Key Features

• High-temperature probe for exhaust-system service
• Fast response to changing engine load
• Sealed electrical connection and heat-resistant lead
• Used across D9, D12, D13 and D16 applications
• Sensor position and calibration must match the engine emissions level
• Engine type: Heavy-duty electronically controlled Volvo Penta marine diesel
• Quantity varies by assembly, most commonly one

🔌 Function

Converts exhaust temperature into an electrical signal for ECU monitoring and aftertreatment thermal management.

⚠️ Common Signs of Failure

• Exhaust temperature fault codes with engine derating
• Regeneration failing to start, or aborting part way through
• An implausible or stuck temperature reading on the display
• An alarm at cold start where the reading disagrees with the other sensors
• On removal, a cracked or eroded probe tip, or a lead with heat-damaged insulation

🛠️ Service Notes

• Supersedes 874330
• Check the harness and connector for heat damage before fitting a new sensor - the lead fails more often than the probe itself
• Sensor position and calibration must match the engine emissions level, so order against the engine number

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21126692 → Supersedes 874330

OEM / Related Numbers

• 874330 earlier number superseded by this part

Aftermarket / Verified Equivalents

• Cojali: 2262653
• Alliant Power: AP63589
• PAI: 854027
• Dinex: 5EL022
• FSS Emission Products: EGT26692

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D13C1-B MH, D13C2-B MP, D13C1-A MP, D13C2-A MP, D13C3-A MP, D13C4-A MP, D13B-A MP, D13B-H MP, D13B-G MP, D13B-L MP, D13B-E MG, D13B-E MG (FE), D13B-E MH, D13B-E MH (FE), D13B-F MG, D13B-F MG (FE), D13B-K MP, D13B-N MH, D13B-N MH (FE), D13B-B MP, D13B-D MP, D13B-J MP, D13B-M MP, D13B-C MP, D13C6-A MP, D13C1-B MG, D13C2-B MG, D13C7-B MP, D13C9-A MP
• Volvo Penta D9A2J, D9A2G, D9A2L MH, D9A2D, D9A2B, D9A2F, D9A2K, D9A2H, D9A2M MP, D9A2A, D9A2C, D9A2E
• Volvo Penta D16C-A MG, D16C-A MH, D16C-B MH, D16C-C MH, D16C-D MH