YANMAR 129150-25101 Idle Gear 4JH-2DTE

( Brand: Yanmar ), ( Manufacturer Part Number: 129150-25101 ), ( Part Type: Gear )

Review YANMAR Idle Gear Assy #129150-25101 fits MARINE

The Yanmar 129150-25101 4JH-2DTE marine idle gear is an essential component for the smooth and efficient operation of Yanmar marine diesel engines. This idle gear is specifically designed for the 4JH-2DTE engine model, which is widely used in various marine applications due to its reliability and power.

The idle gear is responsible for reducing the engine's RPM during idle and low-load conditions, ensuring that the engine runs at a stable speed and providing optimal fuel efficiency. It is made of high-quality materials, including durable steel components and hardened gears, to ensure long-lasting performance even in harsh marine environments.

The Yanmar 129150-25101 marine idle gear is designed to meet the unique requirements of marine applications. It features a heavy-duty, oil-lubricated design that protects the gear teeth from wear and corrosion. The gear also comes with a seal kit to prevent water intrusion and ensure that the idle gear remains dry and functional.

Installation of the Yanmar 129150-25101 marine idle gear is straightforward, and it comes with clear instructions and mounting hardware to simplify the process. The gear is also compatible with other Yanmar marine engine models that use the same idle gear design, making it a versatile and cost-effective solution for boat owners.

In summary, the Yanmar 129150-25101 4JH-2DTE marine idle gear is a high-quality and durable component that is essential for the proper functioning of Yanmar marine diesel engines. Its heavy-duty design, oil-lubricated construction, and compatibility with various engine models make it an excellent investment for boat owners looking to ensure the longevity and efficiency of their marine power systems.

The Yanmar 129150-25101 4JH-2DTE marine idle gear is a component of a marine engine used to control the engine speed at low RPMs. Here are some pros and cons that may help you decide whether to buy this idle gear:

1. Reliable: Yanmar is a well-known and reputable brand in the marine engine industry. This idle gear is designed to provide smooth and reliable operation.

2. Durable: The idle gear is made of high-quality materials that can withstand the harsh marine environment. It is also designed to last longer than some of its competitors.

3. Easy installation: The idle gear is relatively easy to install, and Yanmar provides clear instructions and diagrams to help with the installation process.

4. Efficient: The idle gear is designed to be fuel-efficient, which can help save money on fuel costs over time.

5. Good customer support: Yanmar offers excellent customer support, which can be helpful if you have any issues with the idle gear or need assistance with the installation process.

1. Expensive: Compared to some other idle gear options on the market, the Yanmar 129150-25101 4JH-2DTE can be quite expensive.

2. May require additional parts: Depending on the specific marine engine and application, you may need to purchase additional parts or components to make the idle gear compatible.

3. Some reports of noise: Some customers have reported that the idle gear can be noisy during operation. However, this is not a common complaint, and Yanmar offers solutions to address any noise issues.

The Yanmar 129150-25101 4JH-2DTE marine idle gear is a high-quality and reliable option for those looking to control the speed of their marine engine at low RPMs. While it may be more expensive than some other options, it offers excellent durability, fuel efficiency, and customer support. If noise is a concern, Yanmar offers solutions to address this issue.

If you are looking for a high-quality and reliable marine idle gear, the Yanmar 129150-25101 4JH-2DTE is a great option to consider. Its durable construction, fuel efficiency, and excellent customer support make it a worthwhile investment for boat owners and operators. However, be sure to carefully consider any additional parts or components you may need to make it compatible with your specific marine engine and application.

Details:

part #: 12915025101 prices

• $74.95-$177.07

specifications intengster:

• for models: Marine
• brand: Yanmar
• mpn: 129150-25101
• part type: Gear

general intengster:

• condition: Used
• Boat Parts > Sterndrive Motors Components > Internal Engine Parts

shipping intengster:

• class: Standard
• type: Fixed
• service: Standard
• transit: 3-7 Days
• cost: $11.95

returns intengster:

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

seller intengster:

• # reviews: 4282
• rating: 100.0%
• city: Bristol, Rhode Island

offer intengster:

• availability: In Stock
• started: March 11, 2026
• options: Ship-to-home
• quantity: 1
• sold: 0

payments intengster:

• credit card: Diners-club
• other
• cash
• wallet: Google-pay

Yanmar 129150-25101 Is Similar To:

• Yanmar 124070-14600 2qm15 Marine 2 Cyl 15hp Gear 124070-14600 (57.1% similar) Yanmar 2QM15 marine 2 Cl 15HP gear # 0, used/ good condition, sold as pictured, M310...(September 16th, 2025)
• Yanmar 129472-14011 4jh-2dte Camshaft 129472-14011 With Gear 129150-14101 (61.9% similar) Part #: Yanmar 129472-14011 for sale...(March 10th, 2026)