1502028 Engine Speed Sensor | Genuine Volvo Penta Part

🔧 Product Description

This is the genuine Volvo Penta engine speed sensor (part number 1502028), listed under the Instruments system group. It picks up engine rotational speed and feeds the signal to the tachometer or engine speed instrumentation, and it serves as the current replacement for the earlier sensors 829571 and 833574. Applications cover a broad span of Volvo Penta marine and industrial diesel engines, from the small 2001/2002/2003 and MD series through to the TD/TID 61 and 71 families and TAMD162/165 units.

🚤 Compatibility

• Engine Family: MD, TMD, TAMD, AQAD, D, TWD, TID, TD, MS, TAD, AQD
• Year Range: Approximately 1970s-2000s, control-system controlled

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 1502028
• System group: Instruments
• Net weight approximately 0.17 kg
• Supersedes previous part numbers 829571 and 833574
• Fits MD, MS, AQD, 2001/2002/2003, MD40/TMD40/TAMD40, TD/TID 61 and 71, TWD/TAD 700-series and TAMD162/163/165 engines
• Engine type: Volvo Penta mechanically governed industrial and marine diesel

🔌 Function

The engine speed sensor generates an electrical signal proportional to engine rotational speed, which is used by the tachometer and associated instrumentation to display and monitor RPM. On engines with electronic speed control or alarm functions, this signal also supports overspeed and running-status detection.

⚠️ Common Signs of Failure

• Tachometer reads erratically, jumps, or drops to zero while the engine is running
• No RPM indication at all despite the engine running normally
• Intermittent signal loss that varies with engine vibration or temperature
• Corroded, cracked or oil-contaminated connector and lead at the sensor body
• Incorrect or drifting RPM readings compared with actual engine speed

🛠️ Service Notes

• Note exactly how the old sensor sits before removing it, and keep the tip and its bore spotlessly clean — metal swarf collected on the sensor face is a common cause of an erratic signal
• Fit a new O-ring or seal, lightly lubricated, and take care not to knock the tip against the flywheel or gear teeth as it goes in
• Where the sensor sets its own gap do not force it home; where the gap is adjustable, set it with the correct tool to the figure in the workshop manual for your engine
• Check the target teeth for damage, and the harness, screening and connector for corroded pins or chafing, before blaming the sensor
• Tighten the fixing to the specified figure, route and clip the lead as it was, and clear any stored fault codes before test running

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 1502028 → Supersedes 829571

OEM / Related Numbers

• 833574 earlier number superseded by this part
• 829571 earlier number superseded by this part
• 862251 related speed sensor
• 863413 earlier spacer
• 865808 later spacer
• 863227 adapter
• 872691 related wiring harness
• 873140 overspeed-protection unit

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 2003, 2003R, 2003R SOLAS, 120S-B, 2003TB, 2003TB SOLAS, 120SC, 2001AG, 2001B, 2001BG, 2001D, 2003D, 2003T, 2003TR, 2002AG, 2002B, 2002BG, 2002D, 2003B, 2003B SOLAS, 2003 SOLAS, 2001, 2002, 2001R
• Volvo Penta TD61A, TD61ACE, TD61AG, TD61AGP, TD61AP, TD61APB, TD61AW
• Volvo Penta TD71A, TD71ACE, TD71AG, TD71AGP, TD71AP, TD71APB, TD71AW
• Volvo Penta TAMD162C-C, TAMD162A, TAMD162B, TAMD162C, TAMD162C-B
• Volvo Penta TID71A, TID71AG, TID71AGP, TID71AP, TID71APB
• Volvo Penta MD5A, MD5B, MD5C
• Volvo Penta MS2B-A, MS2B, MS2V
• Volvo Penta TMD40A, TMD40B, TMD40C
• Volvo Penta AQAD40B, AQAD40A
• Volvo Penta AQD21A, AQD21B
• Volvo Penta MD11C, MD11D
• Volvo Penta MD17C, MD17D
• Volvo Penta MD21B, MD21A
• Volvo Penta MD6A, MD6B
• Volvo Penta MD7B, MD7A
• Volvo Penta TAMD165A, TAMD165C
• Volvo Penta TAMD40A, TAMD40B
• Volvo Penta TAMD71B, TAMD71A
• Volvo Penta TAMD72A, TAMD72WJ-A
• Volvo Penta TID61AG, TID61AGP
• Volvo Penta AQAD30A
• Volvo Penta AQD2B
• Volvo Penta AQD40A
• Volvo Penta D2002AG
• Volvo Penta D2003AG
• Volvo Penta MD2B
• Volvo Penta MD3B
• Volvo Penta MD30A
• Volvo Penta MD40A
• Volvo Penta TAD730G
• Volvo Penta TAD740GE
• Volvo Penta TAD741GE
• Volvo Penta TAMD163A-A
• Volvo Penta TAMD30A
• Volvo Penta TAMD61A
• Volvo Penta TAMD62A
• Volvo Penta TD610G
• Volvo Penta TD710G
• Volvo Penta TMD30A
• Volvo Penta TWD610G
• Volvo Penta TWD710G
• Volvo Penta TWD740GE