YANMAR 121550-51100 Plunger Fuel

( Brand: Yanmar ), ( Part Type: Fuel ), ( Manufacturer Part Number: 121550-51100 ), ( Item Weight: 0.1000 )

Review YANMAR Plunger Assy Fuel

Introducing the Yanmar 121550-51100 Plunger Fuel Pump, an essential component for supplying fuel to your Yanmar engine. This fuel pump is meticulously designed and manufactured to deliver reliable and efficient performance, ensuring that your engine runs smoothly and effectively.

The Yanmar 121550-51100 Plunger Fuel Pump is a durable and robust component, engineered to withstand the rigors of continuous operation in marine or industrial applications. It is constructed from high-quality materials, including a cast iron housing and a stainless steel plunger, to provide superior resistance to corrosion and wear.

This fuel pump features a plunger design, which utilizes a reciprocating action to draw fuel from the tank and deliver it to the engine. The plunger is driven by a crankshaft, which is turned by the engine's crankshaft via a drive shaft. The pump's design ensures that it can handle fuels with high viscosity and contaminants, making it an ideal choice for diesel engines.

The Yanmar 121550-51100 Plunger Fuel Pump is easy to install and maintain, with accessible components and clear instructions provided in the user manual. The pump comes with a built-in pressure relief valve, which prevents fuel pressure from exceeding safe levels and protects the engine from damage. Additionally, it is designed to be self-priming, eliminating the need for manual priming and reducing downtime.

This fuel pump is suitable for use with Yanmar engines with a fuel capacity of up to 120 liters (32 gallons) and a maximum fuel pressure of 1.5 MPa (217.6 psi). It is also compatible with a wide range of fuel types, including diesel and biodiesel, making it a versatile and adaptable solution for various applications.

In summary, the Yanmar 121550-51100 Plunger Fuel Pump is a high-performance and durable component that delivers reliable fuel supply to Yanmar engines. Its plunger design ensures efficient fuel delivery, while its robust construction and self-priming capability make it easy to install and maintain. Suitable for a wide range of applications and fuel types, this fuel pump is an essential addition to any Yanmar engine system.

The Yanmar 121550-51100 plunger fuel pump is a commonly used component in Yanmar marine diesel engines. This fuel pump is responsible for supplying fuel from the fuel tank to the engine's injectors. Here are some pros and cons of buying this fuel pump:

1. Reliable: Yanmar is known for manufacturing high-quality marine engines and components. The Yanmar 121550-51100 plunger fuel pump is no exception. It is designed to provide long-lasting performance and reliability.

2. Easy to Install: This fuel pump is relatively easy to install, and it comes with clear instructions and mounting hardware. The installation process is straightforward, and it should not take long to get it up and running.

3. High-Quality Material: The Yanmar 121550-51100 plunger fuel pump is made of high-quality materials, including cast iron and stainless steel. This ensures that it can withstand the harsh marine environment and resist corrosion.

4. Good Flow Rate: This fuel pump has a good flow rate, which means it can supply enough fuel to the engine's injectors to ensure optimal performance.

1. Expensive: The Yanmar 121550-51100 plunger fuel pump is more expensive than some aftermarket fuel pumps. However, the higher price tag is justified by its high-quality materials and reliable performance.

2. Limited Availability: This fuel pump may not be readily available at all marine supply stores or online retailers. It is best to order it directly from Yanmar or a reputable marine parts supplier to ensure that you get an authentic and genuine product.

In conclusion, the Yanmar 121550-51100 plunger fuel pump is a reliable and high-quality component that is essential for the proper functioning of Yanmar marine diesel engines. While it may be more expensive than some aftermarket fuel pumps, its long-lasting performance and ease of installation make it a worthwhile investment for boat owners. I would recommend purchasing this fuel pump from a reputable marine parts supplier or directly from Yanmar to ensure authenticity and genuine quality.

part # 12155051100 prices

• $90.00-$158.82

specifications injectiopug:

• brand: Yanmar
• part type: Fuel
• manufacturer part number: 121550-51100
• item weight: 0.1000

seller injectiopug:

• rating: 98.8%
• # reviews: 59255

offer injectiopug:

• best offers: True
• quantity: 5
• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: November 23, 2025

shipping injectiopug:

• cost: $0.00
• service: Standard
• class: Standard
• type: Fixed
• transit: 6-10 Days

returns injectiopug:

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

payments injectiopug:

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

general injectiopug:

• Air Fuel Delivery > Fuel Injection Parts > Additional Fuel Injection Parts
• condition: New

Yanmar 121550-51100 Is Similar To:

• Yanmar 129400-51100 Qty 1 Genuine Injection Pump Plunger Assembly Sealed (58.7% similar) $50.66–$144.03. (October 23rd, 2025)
• Yanmar 174307-51370 Cap Nut Fuel Pump Fits 2qm20 3qm30 Kbw-10a 3t72 Diesel (36% similar) $12.00–$35.69. (October 25th, 2025)
• Yanmar 129928-51740 Fuel Injection Pump Head Rotor For Engine 4tnv94 4tnv98 (32.1% similar) $101.54–$450.00. (February 17th, 2026)
• Yanmar 119415-59810 Thermo King 0.57l 2tnv70 Tk270m Injector Fuel Lines Oem (41.1% similar) $155.99–$161.99. (March 3rd, 2026)