1. Boat Controls & Steering Offered
  2. sku: 7546900400607604
  3. RAREELECTRICAL 100-40-12A2

RAREELECTRICAL Powerhead Rebuild Kit Jet 80HP

fits make: Mercury. year: 1994–2005.

100-40-12a2 Rareelectrical New Powerhead Rebuild Kit Fits Mercury 4 Cyl Jet 80hp 1994-2005 By 100-40-12

( Brand: Rareelectrical ), ( Part Type: Jet ), ( Manufacturer Part Number: 100-40-12A2 ), ( Warranty: 1 Year ), ( California Prop 65 Warning: This Product May Expose You To Chemicals Which Are Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information Go To Www.p65warnings.ca.gov ), ( Country Of Origin: Taiwan ), ( Source: Aftermarket )

Review RAREELECTRICAL New Powerhead Rebuild Kit Mercury Cyl Jet 80hp By 100-40-12 fits 1994–2005

The Mercury Jet 80hp 100-40-12a2 Powerhead Rebuild Kit is a comprehensive solution for those looking to restore their Mercury outboard motor's powerhead to its original performance. This rebuild kit is specifically designed for Mercury Jet 80hp outboard motors with the model number 100-40-12, manufactured between 1994 and 2005.

This rebuild kit includes all the essential components required to rebuild the powerhead, ensuring a complete and effective restoration. The kit comprises a crankshaft assembly, cylinder kit, camshaft assembly, valve train kit, and various seals and gaskets.

The crankshaft assembly includes a new crankshaft, main bearings, thrust bearing, and crankshaft position sensor. This assembly is crucial for the motor's power generation and requires replacement in a rebuild.

The cylinder kit consists of new pistons, cylinder liners, and rings. These components are responsible for the compression and combustion process in the engine and will wear out over time. The new cylinder kit ensures a proper seal and optimal engine performance.

The camshaft assembly includes a new camshaft, camshaft bearings, and camshaft position sensor. The camshaft plays a vital role in the engine's valve operation, and a worn camshaft can lead to poor performance and potential engine damage.

The valve train kit includes new valves, valve guides, valve stem seals, and adjusters. The valves and valve train components control the intake and exhaust flow in the engine, and a worn or damaged valve train can negatively impact engine performance.

Lastly, the kit includes various seals and gaskets necessary for the rebuild process. These components ensure a proper seal between different engine components, preventing leaks and maintaining engine performance.

By using this Mercury Jet 80hp 100-40-12a2 Powerhead Rebuild Kit, you can restore your outboard motor to its original performance, ensuring reliable and efficient operation for years to come.

A Mercury Jet 80hp 1994-2005 100-40-12 powerhead is a crucial component of your boat's engine. Over time, this powerhead may require rebuilding due to wear and tear. A rebuild kit can help restore the powerhead to its original performance. Let's examine the pros and cons of buying a Mercury Jet 80hp 100-40-12a2 powerhead rebuild kit.

Pros:

1. Cost-effective: Rebuilding the powerhead with a kit is generally more cost-effective than buying a new one.

2. Improved performance: A rebuilt powerhead can restore the engine's performance to its original level or even improve it.

3. Customizable: A rebuild kit allows you to customize the powerhead to your specific needs, such as changing the impeller or adding aftermarket parts.

4. Better than a used powerhead: A rebuild kit ensures that you are using new parts, unlike a used powerhead, which may have hidden issues.

Cons:

1. Time-consuming: Rebuilding a powerhead requires a significant investment of time.

2. Technical expertise: Rebuilding a powerhead requires a certain level of technical expertise and knowledge of the engine's inner workings.

3. Risk of damage: There is a risk of damaging other components during the rebuild process.

Ending Conclusion:

Rebuilding a Mercury Jet 80hp 100-40-12 powerhead with a rebuild kit can be a cost-effective and performance-enhancing solution. However, it requires a significant investment of time and technical expertise. If you are comfortable with the rebuild process or have access to a professional, a rebuild kit can be an excellent choice.

Recommendation:

If you are not comfortable with the rebuild process or do not have the time, it may be worth considering purchasing a new powerhead or having a professional rebuild it for you. While more expensive, a new powerhead comes with the peace of mind that it is in good working condition and will not require any additional work. If you do decide to go with a rebuild kit, make sure to follow the instructions carefully and take your time to ensure a successful rebuild.

specifications dorycontrol:

  • for makes: Mercury
  • for years: 1994-2005
  • brand: Rareelectrical
  • part type: Jet
  • manufacturer part number: 100-40-12A2
  • warranty: 1 Year
  • california prop 65 warning: This Product May Expose You To Chemicals Which Are Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information Go To Www.p65warnings.ca.gov
  • country of origin: Taiwan
  • source: Aftermarket

returns dorycontrol:

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

shipping dorycontrol:

  • class: Economy, Standard, Expedited, One-day
  • type: Fixed
  • transit: 5-8 Days
  • service: Economy, Standard, Expedited, Overnight
  • cost: $0.00

general dorycontrol:

  • Parts Accessories > Boat Parts > Controls Steering
  • condition: New

seller dorycontrol:

  • rating: 99.0%
  • # reviews: 120810

offer dorycontrol:

  • quantity: 6
  • sold: 0
  • started: February 19, 2026
  • options: Ship-to-home
  • availability: In Stock

payments dorycontrol:

  • other
  • wallet: Paypal
  • credit card: Mastercard
for makes: mercury, for years: 1994-2005, part type: jet, warranty: 1 year, california prop 65 warning: this product may expose you to chemicals which are known to the state of california to cause cancer and birth defects or other reproductive harm. for more information go to www.p65warnings.ca.gov, country of origin: taiwan, source: aftermarket,
category: boat parts > controls steering, sku: 7546900400607604,

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