fits model: Trx400ex. make: Honda. year: 1999–2007.

( Manufacturer Part Number: 12310-HN1-010 ), ( Part Type: Valve Cover Cylinder Head Arm Engine ), ( Engine Type: 4-stroke )
The Honda 12310-hn1-010 is a high-quality replacement cylinder head valve cover and rocker arm assembly specifically designed for the 2007 Honda TRX400EX and 99-07 400EX models. This essential engine component is a direct OEM replacement, ensuring a perfect fit and seamless integration into your ATV's powertrain.
The cylinder head valve cover is made from durable, corrosion-resistant materials, providing long-lasting protection against the elements. The cover features a sleek, integrated design that not only enhances the aesthetics of your engine but also provides excellent sealing to prevent oil leaks and minimize maintenance requirements.
The rocker arm assembly is another crucial part of this kit. It comes with new rocker arms, lifters, and pushrods, ensuring a smooth and efficient operation of the engine valves. The high-quality components used in this assembly result in improved engine performance, reduced noise, and increased reliability.
Installing this Honda OEM kit is straightforward, thanks to its straightforward design and detailed installation instructions. The kit includes all the necessary hardware, making it a convenient, one-stop solution for your engine maintenance needs.
In summary, the Honda 12310-hn1-010 is a must-have replacement part for your 2007 TRX400EX or 99-07 400EX ATV. It provides excellent protection, durability, and performance, ensuring your engine runs smoothly and efficiently for years to come.
Pros of buying a Honda TRX400EX 2007-2009 cylinder head, valve cover, and rocker arms:1. OEM parts ensure a perfect fit, improving engine performance and reducing the risk of compatibility issues.
2. Buying these parts as a set may be cost-effective compared to purchasing them individually.
3. High-quality parts from a reputable manufacturer like Honda offer improved durability and reliability, reducing the need for frequent replacements.
Cons of buying a Honda TRX400EX 2007-2009 cylinder head, valve cover, and rocker arms:1. The higher price point may be a deterrent for some, especially if they are considering aftermarket alternatives.
2. These parts are for specific Honda models and years, which may limit their applicability to other ATVs.
3. If not installed correctly, replacing these parts may require professional assistance, adding to the overall cost of the repair.
Conclusion:While the higher cost of OEM parts may be a drawback, the improved engine performance, durability, and reliability offered by Honda's cylinder head, valve cover, and rocker arms make them a worthwhile investment for owners of 2007-2009 Honda TRX400EX ATVs. The benefits of a perfect fit, reduced compatibility issues, and reduced frequency of replacements may ultimately outweigh the initial investment.
Recommendation:If you are in the market for these parts, consider the overall cost-effectiveness of purchasing a set and weigh the benefits of OEM parts against the potential savings of aftermarket alternatives. If you are unsure about installation, it may be worth consulting a professional mechanic to ensure the parts are installed correctly and maximize the lifespan of your ATV's engine.
OEM Cylinder Head / Rocker Arms Assembly. Unit is in working condition. MPN: 12310-HN1-010. Fitment Guarantee.
Upper mount has a crack, as shown in pictures. Rocker arms are in good shape. Head was removed from a running tested motor. These parts were removed from a 2007 HONDA TRX400EX.
If your vehicle is different than this, be sure to verify fitment.