R81NK Relay 12V 129930-77970 for Yanmar Diesel Engine Parts

Product Details

Product Overview

This high-quality R81NK Relay is an essential electrical component specifically designed for Yanmar diesel engines. Operating at a standard 12V, this relay (OEM part number 129930-77970) ensures reliable switching and power distribution within the engine’s electrical system. As a critical part for starting circuits, fuel systems, and auxiliary equipment, it is a direct replacement for the original Yanmar component.

Manufactured to OEM size specifications, this relay offers a seamless fit for a wide range of Yanmar-powered machinery. It is commonly used in construction equipment, industrial machinery, agricultural tractors, marine vessels, and generator sets. Please verify your engine model (R81NK) and part number (129930-77970) to ensure compatibility before purchase.

provides this relay as a direct replacement solution, offering a cost-effective alternative without compromising on performance or durability. Each unit undergoes rigorous testing to meet the demands of heavy-duty diesel applications.

Key Features & Benefits

• Direct OEM Replacement: Matches the form, fit, and function of the original Yanmar 129930-77970 relay for easy installation.
• Reliable 12V Operation: Designed for standard 12V electrical systems found in most diesel engines, ensuring consistent switching performance.
• Durable Construction: Built to withstand vibration, heat, and moisture common in harsh industrial and off-road environments.
• Wide Application Range: Suitable for various engine applications including construction, agriculture, marine, and generator sets.
• Rigorous Testing: Each relay is inspected and tested to ensure proper electrical continuity and switching functionality.
• Cost-Effective Solution: A high-quality aftermarket alternative to expensive OEM parts, offering significant savings without sacrificing reliability.

Technical Specifications

OEM Cross-Reference

This relay is a direct replacement for the following genuine Yanmar part numbers:

• Yanmar OEM: 129930-77970

Please confirm your existing part number matches the above before ordering. This part is designed as an aftermarket replacement, not an OEM product.

Compatibility

This relay is specifically designed for use with the Yanmar R81NK diesel engine. It is commonly used for the following applications:

• Engine: Yanmar R81NK
• Applications: Construction machinery, industrial equipment, agricultural tractors, marine engines, generator sets, and material handling equipment.

Note: Fitment is inferred based on the engine model and OEM part number. Please verify compatibility with your specific equipment before purchasing.

Global Supply & Distribution

We offer worldwide shipping to meet the demands of international B2B buyers. Our products are exported to key markets across North America, Europe, Asia-Pacific, the Middle East, and Africa. We provide fast and reliable delivery to major ports and industrial centers, including Los Angeles, Rotterdam, Shanghai, Dubai, and Singapore.

With extensive experience in international trade, we ensure all shipments comply with export/import regulations. We offer flexible logistics options, including air freight, sea freight, and express courier services to suit your timeline and budget.

Quality Assurance

All products are manufactured under strict quality control standards. Each relay undergoes a machinery test report and outgoing video inspection to verify performance. We provide a 6-month warranty against manufacturing defects. After the warranty period, our online support team remains available to assist with any technical questions or issues.

Our commitment to quality ensures that every component delivers reliable operation and long service life in demanding diesel engine environments.

FAQ

Q1: How do I verify if this relay fits my equipment?
A: Please check your existing relay for the part number. If it matches 129930-77970 and your engine is a Yanmar R81NK model, this relay will be a direct replacement. You can also confirm the 12V rating and physical size before installation.

Q2: What is the installation procedure for this relay?
A: Installation is straightforward. Disconnect the battery negative terminal, remove the old relay, and plug in the new one. Ensure all connections are secure and match the original wiring configuration. If unsure, consult a qualified technician.

Q3: What maintenance does this relay require?
A: This relay is maintenance-free under normal operating conditions. However, periodic inspection of the electrical connections for corrosion or looseness is recommended. Keep the relay clean and dry to ensure long-term reliability.