fits make: Yamaha.

( Manufacturer Part Number: 6H4-11400-04-00 ), ( Part Type: Crankshaft Piston )
The Yamaha 6H4-11400-04-00 40 outboard crankshaft pistons are high-quality replacement components designed specifically for Yamaha outboard engines. These pistons are part of the critical engine system that converts linear motion into rotational force, playing a crucial role in the engine's overall performance.
The 6H4-11400-04-00 pistons are precision-engineered to meet the exact specifications of Yamaha's 40hp 6H4 outboard engines. They are made from a durable, high-temperature alloy that can withstand the intense pressures and heat generated during operation. The piston skirts are designed with a optimized crown shape to ensure smooth combustion and minimize friction, while the piston rings provide a tight seal to prevent oil leakage and maintain compression.
The pistons also feature a state-of-the-art cylinder bore finish that reduces friction and increases engine efficiency. This results in improved fuel efficiency, reduced emissions, and longer engine life. The pistons are also designed with a balanced weight distribution to reduce vibrations and improve engine smoothness.
Installing these pistons is a straightforward process that can be done with basic tools and a little mechanical know-how. They are a cost-effective solution for outboard engine owners looking to extend the life of their engine or replace worn-out parts. Overall, the Yamaha 6H4-11400-04-00 40 outboard crankshaft pistons are a reliable and high-performing replacement part for Yamaha outboard engines.
Pros of buying Yamaha 6H4-11400-04-00 40 outboard crankshaft pistons 6H4-11631-09-96:1. OEM Part: These pistons are original equipment manufacturer parts, which means they are designed and manufactured by Yamaha, ensuring a perfect fit and compatibility with your outboard engine.
2. Quality and Reliability: Yamaha is known for its high-quality products, and these pistons are no exception. They are built to last, ensuring a long service life.
3. Compatibility: These pistons are specifically designed for the Yamaha 6H4 engine, ensuring a seamless fit and optimal engine performance.
4. Availability: OEM parts are widely available, making it easy to find and order these pistons when you need them.
Cons of buying Yamaha 6H4-11400-04-00 40 outboard crankshaft pistons 6H4-11631-09-96:1. Price: OEM parts are typically more expensive than aftermarket parts. While the quality and reliability may be worth the extra cost for some, others may find the price prohibitive.
2. Limited Options: Since these are OEM parts, there may be limited options for customization or upgrades.
Conclusion: If you are looking for a high-quality, reliable, and compatible part for your Yamaha 6H4 outboard engine, then OEM parts like the Yamaha 6H4-11400-04-00 40 outboard crankshaft pistons 6H4-11631-09-96 are a great choice. However, if cost is a concern, you may want to consider aftermarket options. Ultimately, the best choice for you will depend on your specific needs and budget.
Recommendation: If you value quality and reliability over cost, then I would recommend purchasing the Yamaha 6H4-11400-04-00 40 outboard crankshaft pistons 6H4-11631-09-96. However, if cost is a concern, you may want to compare prices with aftermarket options to find the best value for your money.
A Message from Anything Outboard. Instruction / installation manual not included. Standard size pistons. Slight marks on outside of piston walls, but very usable.
Sold as seen in pictures. It is in good working condition and may fit other years model's.: OEM No scoring of journals. Hardware not included unless pictured.
Smooth bearings with no noise. This is off a 1986 Yamaha 40ELJ. Anchor up at Anything Outboard for THOUSANDS of hard to find boat parts, original manufacturers parts and marine surplus.