Engine Part Injector Plunger K334 K336 K359 For Zexel Nozzles Plunger 140163-4220

Product Details

Product Overview

This is a high-quality, genuine new injector plunger, specifically designed for precision fuel injection systems in diesel engines. The part is a critical component within the fuel injection pump, responsible for pressurizing fuel to the exact specifications required for efficient combustion. Identified by the part number 140163-4420, this plunger is commonly associated with Zexel injection systems and is a direct replacement for models K334, K336, and K359.

Manufactured in Japan, this component is engineered to meet the exacting standards of the original equipment. It is primarily used in Kubota engines, often found in excavators and other heavy machinery. While fitment can vary by specific engine configuration, this plunger is a standard replacement part for many diesel engines from the 1976-1986 era. Please verify your engine model and existing part number to confirm compatibility.

Key Features & Benefits

• Genuine Quality: This is a new, genuine part, not a generic aftermarket copy, ensuring a perfect fit and reliable performance.
• Precision Engineering: Manufactured to tight tolerances, this plunger ensures accurate fuel metering for optimal engine power and efficiency.
• Durable Construction: Made from high-grade steel, it is built to withstand the high pressures and wear associated with diesel injection systems, offering a long service life.
• Direct Replacement: Designed as a direct swap for the original Zexel plungers, simplifying the repair process and reducing downtime.
• Enhanced Engine Performance: A properly functioning plunger restores fuel pressure, leading to smoother idling, better throttle response, and reduced emissions.
• Cost-Effective Repair: Replacing the plunger can restore a worn injection pump to like-new condition, avoiding the high cost of a complete pump replacement.

Technical Specifications

OEM Cross-Reference

This plunger is a direct replacement for the following OEM part numbers and model designations. Please cross-reference your existing part to ensure a perfect match.

• Zexel Part Number: 140163-4420
• Alternative Model Designations: K334, K336, K359
• OEM Number: K334 (as listed in original specifications)

Note: This list is based on the provided data. Always verify with your engine’s service manual.

Compatibility

This injector plunger is commonly used for the following applications. Fitment is inferred based on the original product data.

• Engine Models: Kubota engines utilizing Zexel injection pumps with model codes K334, K336, or K359.
• Vehicle/Equipment: Commonly used in Kubota excavators and other industrial machinery from the 1976-1986 production years.
• System: Zexel brand fuel injection pumps.

Global Supply & Distribution

We specialize in the global supply of diesel engine parts and offer worldwide shipping to meet the needs of international B2B buyers. Our distribution network covers major markets including:

• North America: USA, Canada, Mexico
• Europe: Germany, UK, Netherlands, France, Italy
• Asia-Pacific: Australia, New Zealand, Singapore, South Korea
• Middle East & Africa: UAE, Saudi Arabia, South Africa
• South America: Brazil, Chile, Argentina

We provide fast delivery to major ports and industrial centers. Our export experience ensures compliance with international trade regulations and smooth customs clearance.

Quality Assurance

We are committed to providing high-quality parts that meet or exceed OEM standards. Our quality assurance process includes:

• Manufacturing Standards: Parts are sourced from reputable Japanese manufacturers known for precision engineering.
• Warranty: This product comes with a standard 6-month warranty against manufacturing defects.
• Testing: Components are tested for dimensional accuracy and material integrity to ensure reliable performance under high-pressure conditions.

FAQ

Q: How do I confirm this plunger fits my injection pump?
A: Check the model number stamped on your injection pump’s data plate. It should match one of the models listed (K334, K336, or K359). Also, verify the part number of your existing plunger is 140163-4420 or a direct cross-reference.

Q: Can I install this plunger myself, or do I need a specialist?
A: Replacing an injection pump plunger is a complex task that requires precision tools and a clean environment. It is highly recommended that a qualified diesel fuel injection technician performs this replacement to avoid damage to the pump or engine.

Q: What is the typical lifespan of this plunger?
A: Lifespan depends on fuel quality, operating conditions, and maintenance. With clean fuel and regular filter changes, a genuine plunger can last for thousands of operating hours. Signs of wear include hard starting, poor performance, and black smoke.