1. Boat Parts In Otsterndriv Sterndrive Prices For Sale.
  2. sku: 4291839994574713
  3. MERCURY MARINE 3853990

MERCURY MARINE 3853990 Gm Boat Engine Crank Shaft Crankshaft 7.4 V8 Sensor

fits model: 454. make: Volvo, Penta, Mercury.

3853990 Mercury Marine Volvo Penta 7.4 L 454 V8 Gm Boat Engine Crank Shaft Crankshaft Sensor

( Brand: Mercury Marine ), ( Manufacturer Part Number: 3853990 ), ( Country Of Origin: United States )

Review MERCURY MARINE Volvo Penta 7.4 V8 Gm Boat Engine Crank Shaft Crankshaft Sensor fits 454

Introducing the Mercury Marine 3853990 Volvo Penta 7.4 454 V8 GM Boat Engine Crankshaft Sensor, a crucial component designed to ensure optimal engine performance and reliability. This sensor is engineered specifically for Volvo Penta 7.4 liter V8 GM boat engines, like those commonly found in mid-sized pleasure craft and commercial watercraft.

The crankshaft sensor plays a vital role in the engine's ignition system and engine management, measuring engine RPM and crankshaft position to provide essential data to the engine control module. The Mercury Marine 3853990 sensor is manufactured to the highest standards, featuring a robust design that can withstand the rigors of continuous marine use.

This crankshaft sensor is a crucial replacement part for boats experiencing issues with engine misfires, rough idling, or erratic performance. By accurately monitoring crankshaft position and RPM, the sensor contributes to improved engine efficiency, smoother operation, and reduced emissions.

The Mercury Marine 3853990 Volvo Penta 7.4 454 V8 GM Boat Engine Crankshaft Sensor is an OEM (Original Equipment Manufacturer) part, ensuring a direct fit and seamless integration with your engine system. It is engineered to be a reliable and long-lasting solution for boat owners, providing peace of mind and dependable engine performance for countless hours on the water.

In summary, the Mercury Marine 3853990 Volvo Penta 7.4 454 V8 GM Boat Engine Crankshaft Sensor is a vital component for maintaining the optimal performance and reliability of your marine engine. Designed specifically for Volvo Penta 7.4 liter V8 GM boat engines, this sensor measures engine RPM and crankshaft position, ensuring accurate data for efficient engine operation and reduced emissions. Trust Mercury Marine for a high-quality, OEM solution that is built to last and contribute to a memorable boating experience.

Pros and Cons of Buying a Mercury Marine 3853990 Volvo Penta 7.4 454 V8 GM Boat Engine Crankshaft Sensor

1. Pros:

a. OEM Part: This is an original equipment manufacturer (OEM) part, ensuring a perfect fit and optimal performance.

b. Reliability: Volvo Penta is known for its reliable engines, and this crankshaft sensor is designed to work seamlessly with the engine.

c. Improved Engine Performance: A faulty crankshaft sensor can lead to poor engine performance. Replacing it with a new one can help restore the engine's power and efficiency.

d. Faster Diagnostics: The crankshaft sensor helps the engine management system diagnose issues in real-time, making it easier and quicker to identify and address other problems.

2. Cons:

a. Cost: Replacing a crankshaft sensor can be an expensive repair, especially for high-performance engines like the Volvo Penta 7.4 454 V8.

b. Labor Costs: Installing the new crankshaft sensor may require professional help, adding to the overall cost.

c. Availability: Depending on the supplier or dealer, this specific part might not always be readily available, causing potential delays in repairs.

Conclusion:

The decision to buy a Mercury Marine 3853990 Volvo Penta 7.4 454 V8 GM Boat Engine Crankshaft Sensor involves weighing the benefits against the costs. While the part offers reliability, improved engine performance, and faster diagnostics, it comes with a hefty price tag and potential labor costs. If your boat's engine is essential for your livelihood or frequent use, the investment in a new crankshaft sensor could be worthwhile. However, if your budget is tight or the boat is used infrequently, you might want to consider other options, such as rebuilding the existing sensor or using a reconditioned one.

Recommendation: Before making a decision, consider the following steps:

1. Assess the importance of the boat and its engine to your lifestyle and needs.

2. Determine the current condition and usage pattern of your boat's engine.

3. Evaluate the financial implications of the repair, including labor costs and the potential long-term savings from improved engine performance and reliability.

4. Explore alternative options, such as rebuilding the existing sensor or using a reconditioned one, to save on costs.

Based on your unique circumstances, the best choice for you may vary. Make an informed decision by considering all factors carefully.

Details:

Shelf 24-9-4-C. I will do my best to resolve the issue. Look at pictures closely and ask any questions, I try to describe parts as best can. What you see in the pictures is what get.

Mounting hardware is only included if it shown in the pictures. Please look at all pictures and read entire before buying. Part was removed from a Volvo Penta 7.4 L Marine Engine. Condition: Good used condition.

Thanks -Mike.

part #: 3853990 prices

  • $255.55-$550.00

specifications otsterndriv:

  • for models: 454
  • for makes: Volvo, Penta, Mercury
  • brand: Mercury Marine
  • mpn: 3853990
  • country of origin: United States

general otsterndriv:

  • condition: Used
  • Boat Parts > Sterndrive Motors Components > Other

payments otsterndriv:

  • wallet: Google-pay
  • credit card: Mastercard
  • other

returns otsterndriv:

  • policy: Returns Accepted
  • paid by: Buyer
  • time: 30 Days

shipping otsterndriv:

  • transit: 2-6 Days
  • service: USPS Ground Advantage, USPS Priority Mail, FedEx Ground / FedEx Home Delivery, USPS Priority Mail Express
  • type: Calculated
  • cost: $15.70
  • carrier: USPS, FedEx
  • class: Standard, Expedited

offer otsterndriv:

  • started: October 29, 2025
  • sold: 0
  • quantity: 1
  • options: Ship-to-home
  • availability: In Stock

seller otsterndriv:

  • # reviews: 111381
  • rating: 99.4%
  • city: Huron, Ohio
for models: 454, for makes: volvo, penta, mercury, country of origin: united states,
category: boat parts > sterndrive components, sku: 4291839994574713,
Mercury Marine 3853990 Is Similar To:
otsterndriv logo
4 offers $255.55–$550.00 USD
  • New other (see details). Offer #1 priced at $299.87 + $12.95 shipping estimate = $312.82* total. $12.95 Shipping Usps Ground Advantage New Without Box Omc crankshaft sensor 986564.+$12.95 shipping
  • New. Offer #2 priced at $550.00 + $30.00 shipping estimate = $580.00* total. Shipped with Economy Shipping. OMC Volvo Crank Sensor 0986564 Cobra New Old Stock.+$30.00 shipping
  • Used. Offer #3 priced at $255.55 + $17.10 shipping estimate = $272.65* total. I will do my best to resolve the issue. Part was removed from a Volvo Penta 7.4 L Marine Engine.+$17.10 shipping
  • Used. Offer #4 priced at $300.00 + $5.48 shipping estimate = $305.48* total. Replaces You are getting the item you see in the pictures For Sale is a Crank POS Sensor for OMC King Cobra 454 7.4L.+$5.48 shipping

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