NAMURA ATTO-PO378739-19 Atv Topend Rebuild Kit 79.45MM

( Brand: Namura ), ( Manufacturer Part Number: ATTO-PO378739-19 )

Review NAMURA Polaris Atv Topend Rebuild Kit 79.45mm fits TRAILBOSS 325 2000–2002

Namura Atto PO378739-19 Top End Rebuild Kit for Polaris Trailboss 325 ATV (79.45mm)

Introducing the Namura Atto PO378739-19 Top End Rebuild Kit specifically designed for the Polaris Trailboss 325 All-Terrain Vehicle with a cylinder bore size of 79.45mm. This kit is an essential tool for those who want to ensure the longevity and optimal performance of their ATV's engine.

The Namura Atto Top End Rebuild Kit is a comprehensive solution that includes all the necessary components needed to rebuild the top end of your Polaris Trailboss 325 engine. Each part is meticulously crafted using high-quality materials to ensure a perfect fit and superior durability.

1. Cylinder Kit: This consists of a new cylinder sleeve, piston, piston ring set, and cylinder pin. These parts are crucial in creating a sealed combustion chamber and providing the necessary compression for your engine to run efficiently.

2. Crankcase Gasket Set: This set includes various gaskets required to seal the connection between the cylinder and crankcase. Properly sealing these areas helps prevent oil leaks and maintain engine performance.

3. Timing Cover Gasket: This gasket seals the connection between the timing cover and the engine block, preventing oil leaks and maintaining the engine's integrity.

4. Head Gasket: This gasket seals the connection between the cylinder head and the engine block, ensuring proper compression and preventing coolant and oil mixing.

5. Valve Guides and Seats: These components ensure proper alignment and sealing of the valves in the cylinder head, allowing for efficient air and fuel flow into the engine.

By investing in the Namura Atto PO378739-19 Top End Rebuild Kit, you'll not only be able to restore the performance of your Polaris Trailboss 325 ATV's engine but also enjoy the peace of mind that comes with knowing your vehicle is equipped with top-quality, OEM-grade components.

This kit is a must-have for those who demand the best from their ATV and want to ensure it remains in excellent condition for years to come. So, don't hesitate and upgrade your Polaris Trailboss 325 engine today with the Namura Atto PO378739-19 Top End Rebuild Kit.

Buying a NAMURA ATTO-PO378739-19 Top End Rebuild Kit for a 2000-2002 Polaris Trailboss 325 ATV: Pros, Cons, and Conclusion

The NAMURA ATTO-PO378739-19 Top End Rebuild Kit is designed for the 79.45mm engine found on Polaris Trailboss 325 ATV models from 2000 to 2002. In this article, we will discuss the advantages and disadvantages of purchasing this rebuild kit and provide a final recommendation.

1. Cost-effective: A top end rebuild kit is generally more cost-effective than purchasing a new engine or even a used one. This kit includes all the necessary parts to rebuild the engine's upper component, ensuring a long-lasting solution.

2. Improved Performance: Rebuilding the engine using a new kit can lead to improved engine performance. Worn-out parts can cause inefficiencies, leading to power loss. Replacing these parts can help restore the engine to its original specifications.

3. DIY Satisfaction: For those who enjoy working on their vehicles, this kit offers the satisfaction of completing the project themselves. It can also be an excellent learning experience for those looking to gain mechanical skills.

4. Better Than New: When a rebuild is done correctly, the engine can function better than new. Each part is replaced, ensuring that no worn-out component affects the engine's overall performance.

5. OEM Quality: NAMURA is a reputable manufacturer, and their parts are designed to meet or exceed OEM specifications. This ensures a proper fit and function for the engine components.

1. Time-Consuming: Rebuilding an engine can be a lengthy process, requiring significant time and effort. This may not be ideal for those who value their time or who are not mechanically inclined.

2. Risk of Damage: There is always a risk of causing additional damage during the rebuild process. Proper disassembly, cleaning, and reassembly techniques must be followed to minimize this risk.

3. Cost: While the rebuild kit itself may be cost-effective, the labor costs associated with the rebuild can add up. Those who do not have the necessary tools or expertise may need to hire a professional, increasing the overall cost.

4. Potential for OEM Parts Availability: As engines age, it can become increasingly difficult to find OEM parts. This may require the use of aftermarket parts, which may not perform as well or last as long as OEM parts.

The NAMURA ATTO-PO378739-19 Top End Rebuild Kit for the 2000-2002 Polaris Trailboss 325 ATV offers significant advantages, such as cost-effectiveness, improved performance, DIY satisfaction, and better-than-new engine quality. However, it also comes with some disadvantages, such as the time-consuming process, potential damage risks, labor costs, and potential OEM part availability issues.

Based on the pros and cons presented above, it is recommended that those with mechanical skills, a strong desire for cost savings, and a willingness to invest time and effort into the project consider purchasing and installing the NAMURA ATTO-PO378739-19 Top End Rebuild Kit for their 2000-2002 Polaris Trailboss 325 ATV. For those who lack mechanical skills or do not have the time to invest, it may be more practical to consider hiring a professional to complete the rebuild or exploring other engine repair or replacement options.

part # attopo37873919 price

• $98.21

specifications atvsienna:

• for models: 325, Trailboss
• for makes: Polaris
• for years: 2000-2002
• brand: Namura
• manufacturer part number: ATTO-PO378739-19

general atvsienna:

• condition: New
• ATV, Side-by-Side UTV Parts Accessories > Engines Engine Parts > Other Engine Parts

returns atvsienna:

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

offer atvsienna:

• availability: In Stock
• started: February 13, 2026
• quantity: 9
• options: Ship-to-home
• sold: 0

payments atvsienna:

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

seller atvsienna:

• rating: 99.9%
• # reviews: 77631

shipping atvsienna:

• cost: $0.00
• type: Fixed
• service: Standard
• transit: 4-7 Days
• class: Standard

Namura ATTO-PO378739-19 Is Similar To:

• Yamaha 22k-11311-02 Genuine 1985-2008 Badger Moto-4 Raptor 80 Cylinder Jug Namura Piston Kit (19.1% similar) $32.89–$59.95. (October 21st, 2024)
• Namura Atpi-su591963-69 2003-2008 Suzuki Ltz400 Atv Piston Kit 11.3 1 Std Comp / 89.96mm (44.8% similar) $93.50–$107.61. (December 13th, 2024)
• Namura Technologies 9361-n411300-atv Piston Kit-std Bore 96.57mm For 2011-2014 Polaris Sportsman 550 Eps (29.5% similar) $84.76–$137.26. (December 15th, 2024)
• Namura Atpi-po378843-32 2003-2013 Polaris Boss 330 Atv Piston Kit 79.45mm (70.4% similar) $82.40. (December 16th, 2024)
• Namura Na-50091 Big Bore Piston 92.95mm #na-50091 Polaris (29.4% similar) $65.00–$93.56. (December 18th, 2024)
• Namura Atpi-po384307-15 2001-2005 Polaris Sportsman 400 Atv Piston Ring Set 87.89mm (63.9% similar) $37.42. (December 19th, 2024)
• Namura Atpi-po596155-93 1993-2002 Polaris 400 Xplorer Atv Piston Ring Set 83.44mm (57.5% similar) $20.88. (December 19th, 2024)
• Namura Atpi-ho578307-62 1998-2004 Honda Trx450 Fe Foreman Atv Piston Kit 90.96mm (51.8% similar) $95.19. (December 19th, 2024)
• Namura Na-40001-4 .040 Over Bore Piston Kit For Yamaha 1987-2006 Banshee 350 Yfz350 65.00mm (33.9% similar) $79.71–$155.16. (December 20th, 2024)
• Namura Na-10042-8 No Pin .080 Over Bore Piston Kit For Honda Fits Rancher 420 88.5mm -no Wrist Pin (31.5% similar) $69.99–$106.51. (December 21st, 2024)
• Namura Technologies Na-30000-4k Piston Kit 1.00mm Oversize To 66.97mm 186-30004 (35.2% similar) $76.73–$92.19. (December 24th, 2024)