YANMAR 5VK-13982-00 Longhorn Rail Injector Regulator Fuel

( Brand: Yanmar ), ( Manufacturer Part Number: 5VK-13982-00 ), ( Type: Fuel Rail Fuel Rail Assembly ), ( Country Of Origin: United States ), ( Color: Silver ), ( Manufacturer Warranty: Unspecified Length ), ( Placement On Vehicle: Inner ), ( Storage Location: Y7 A100187-o 3 ), ( Custom1: 204642 ), ( Finish: Raw/unpainted ), ( Material: Metal ), ( Machine Type: Atv ), ( Vintage Part: No )

Review YANMAR Longhorn Rail Injector And Regulator Fuel Assembly fits VIKING 700 2016–2023

The **Yanmar 5VK13982-00 16-23 Longhorn Viking 700 Rail Injector Regulator Fuel** is a precision-engineered component designed to maintain optimal fuel pressure within diesel engine systems, ensuring reliable performance and longevity for marine, industrial, or heavy-duty applications. This high-quality regulator is specifically tailored for Yanmar s 5VK series engines, a robust lineup known for durability and efficiency, and is engineered to interface seamlessly with the **Longhorn Viking 700 rail injection system**, a cutting-edge fuel delivery solution that enhances combustion precision and reduces emissions. Crafted from premium materials, including corrosion-resistant alloys and reinforced seals, this regulator is built to withstand the demanding conditions of continuous operation, whether in saltwater marine environments, off-road vehicles, or stationary power generators. Its **16-23 bar pressure range** accommodates a wide variety of fuel delivery requirements, allowing for fine-tuned adjustments to match the engine s specific fueling needs, whether for low-speed cruising or high-load performance. The design incorporates a **smooth-flowing internal passage** and a **durable spring mechanism**, ensuring consistent pressure regulation with minimal pulsation, which helps prevent fuel starvation, injector wear, and potential damage to the entire fuel system. Ideal for applications where reliability and performance are critical, this regulator is a direct-fit replacement for OEM components, offering the same level of precision as the original while often exceeding it in terms of durability and adaptability. Whether integrated into a **Viking 700 rail system** for enhanced fuel efficiency or used in standalone setups for Yanmar-powered equipment, this regulator is a testament to Yanmar s engineering excellence and Longhorn s commitment to advanced fuel management technology.

### **Pros and Cons of buying a Yanmar 5VK13982-00 (16-23 Longhorn Viking 700 Rail Injector Fuel Regulator)**

1. **Compatibility with Longhorn Viking 700 Series** This part is specifically designed for the Viking 700 rail injector fuel system, ensuring proper fit and function without modification.

2. **OEM Quality** Yanmar is a reputable manufacturer, and this component is likely built to the same standards as original equipment, reducing the risk of premature failure.

3. **Reliability in Fuel Delivery** A properly functioning fuel regulator ensures consistent fuel pressure to the injectors, which is critical for engine performance and longevity.

4. **Easier Maintenance** Since it s a direct replacement part, swapping it out is straightforward, reducing downtime compared to custom or aftermarket solutions.

5. **Potential Cost Savings** If the original regulator has failed, replacing it with an OEM or high-quality aftermarket part can be more economical than overhauling the entire fuel system.

6. **Warranty Coverage** If purchased from a trusted dealer or directly from Yanmar, the part may come with a warranty, providing peace of mind against defects.

7. **Improved Engine Efficiency** A well-functioning regulator helps maintain optimal fuel pressure, which can enhance fuel efficiency and reduce emissions.

1. **Cost** As an OEM or high-quality replacement part, it may be more expensive than generic aftermarket alternatives, though this is often justified by reliability.

2. **Limited Availability** Depending on the region, finding this exact part may require ordering from a specialty marine or Yanmar distributor, which could involve shipping delays.

3. **Installation Complexity** While the part itself is straightforward, improper installation (e.g., incorrect pressure settings or leaks) could lead to performance issues if not handled carefully.

4. **Potential Counterfeit Risks** If purchasing from an untrusted seller, there s a risk of receiving a knockoff part that doesn t meet specifications, leading to poor performance or failure.

5. **Age of the Part** If the engine is very old, the regulator may still be functional, making replacement unnecessary unless there are clear signs of failure (e.g., poor fuel delivery, engine misfires).

6. **Compatibility with Modifications** If the Viking 700 has been heavily modified (e.g., turbocharged, tuned), the stock regulator may not be sufficient, requiring an upgraded or custom solution.

7. **Maintenance Overhead** While the part itself is durable, the fuel system (including filters, lines, and injectors) should be inspected periodically to ensure the regulator operates correctly.

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### **Conclusion**

The **Yanmar 5VK13982-00 fuel regulator** is a solid choice for maintaining or restoring proper fuel delivery in a **Longhorn Viking 700 series engine**, especially if the original part has failed. Its **OEM quality, reliability, and direct compatibility** make it a preferred option for those prioritizing performance and longevity. However, the **higher cost, potential availability issues, and installation considerations** mean it may not be the best fit for every situation particularly if the engine is already running well or if budget constraints favor a more economical alternative.

For most **Viking 700 owners experiencing fuel-related issues** (e.g., rough idling, poor power, or injector problems), this part is a **recommended upgrade** to ensure consistent and efficient fuel delivery. If the engine is heavily modified or the budget is tight, consulting with a marine mechanic to assess whether the regulator is the root cause of issues and whether a lower-cost solution exists may be wise.

- **Buy it if:** You re experiencing fuel system problems, the engine is stock or lightly modified, and you want a reliable, long-lasting solution.

- **Consider alternatives if:** The engine is running fine, you re on a tight budget, or you suspect other components (e.g., injectors, filters) are the primary issue.

- **Where to buy:** Purchase from an **authorized Yanmar dealer, marine parts specialist, or a trusted online retailer** (e.g., MarineParts.com, West Marine) to avoid counterfeit parts and ensure authenticity.

Details:

OEM Regulator 5VK-13982-00. Fuel Rail Assembly - Complete fuel delivery system including the metal rail, one 1 brown injector, and pressure regulator Damper. Fits 2017 2024 Yanmar Longhorn YU700GMP, BULL YU700G, and Yamaha Viking 700 model's sharing the 686cc engine platform. Part is off a 2019 23 Hissing Yanmar 700 Longhorn, Watch Video of this Unit - YouTube.

Structurally sound and complete with mounting bracket.

specifications fuetanintak:

• for models: 700, Viking
• for years: 2016-2023
• brand: Yanmar
• mpn: 5vk-13982-00
• type: Fuel Rail Fuel Rail Assembly
• country of origin: United States
• color: Silver
• manufacturer warranty: Unspecified Length
• placement on vehicle: Inner
• storage location: Y7 A100187-o 3
• custom1: 204642
• finish: Raw/unpainted
• material: Metal
• machine type: Atv
• vintage part: No

shipping fuetanintak:

• transit: 2-6 Days
• cost: $0.00
• class: Standard, Expedited, One-day
• carrier: FedEx, USPS
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery, USPS Priority Mail, FedEx 2Day, Overnight

offer fuetanintak:

• options: Ship-to-home
• sold: 0
• quantity: 1
• started: February 4, 2026
• availability: In Stock

seller fuetanintak:

• rating: 99.3%
• # reviews: 208574
• city: Odessa, Florida

returns fuetanintak:

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

general fuetanintak:

• condition: Used
• ATV, Side-by-Side UTV Parts Accessories > Air Intake Fuel Delivery > Fuel Tanks

payments fuetanintak:

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

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