Product Overview

This high-precision Fuel Injection Plunger & Barrel Assembly (Part No. 3690) is a critical component for diesel engine fuel systems. Manufactured from premium high-speed steel, this unit is designed for direct replacement and repair applications, restoring fuel injection pressure and engine efficiency. We serve a global B2B clientele, with reliable shipping to major industrial markets in North America, Europe, the Middle East, and Asia-Pacific. Each assembly is a single selling unit, professionally packed for secure transit.

Key Features & Benefits

• Precision Engineering: Machined to exact OEM tolerances for a perfect seal and optimal fuel atomization.
• Superior Durability: Constructed from high-speed steel to resist wear, corrosion, and high-pressure fatigue, ensuring a long service life.
• Enhanced Performance: Restores original engine power, reduces fuel consumption, and minimizes exhaust emissions.
• Direct Replacement: Simple “plug-and-play” installation; no modifications required for compatible diesel engines.
• Reliable Supply: Low MOQ of 48 pcs with consistent stock availability for wholesale orders.

Technical Specifications

OEM Cross-Reference

This plunger and barrel assembly is a direct replacement for the following OEM part number:

• OEM Number: 3690

Note: Please verify your existing part number and engine model before ordering. Contact our technical support for cross-referencing assistance if needed.

Compatibility

• Engine Type: Diesel Engines (Truck, Car, and Industrial Applications)
• Vehicle Make: Compatible with various diesel engine brands requiring part 3690.
• System: Fuel Injection Pump System.

Global Supply & Distribution

We offer fast and reliable worldwide shipping from our distribution hub in Shandong, China. Our logistics network ensures timely delivery to major ports and industrial centers globally, including:

• North America: Los Angeles, Houston, New York, Toronto
• Europe: Rotterdam, Hamburg, Antwerp, Felixstowe
• Asia-Pacific: Shanghai, Singapore, Tokyo, Sydney
• Middle East & Africa: Dubai, Jebel Ali, Durban

We handle export documentation and compliance for international B2B orders, supporting both sea and air freight options.

Quality Assurance

• Manufacturing Standard: Produced in ISO-compliant facilities using precision grinding and heat treatment processes.
• Warranty: 4 months against manufacturing defects.
• Testing: Each unit is inspected for dimensional accuracy, surface finish, and hardness before packing.
• Certification: High-quality control from raw material to finished product.

FAQ

Q1: How do I confirm if this 3690 plunger fits my engine?

Please check your existing fuel injection pump part number. This assembly is a direct replacement for OEM number 3690. For specific vehicle engine models (e.g., Cummins, Yanmar, Perkins), we recommend matching the plunger diameter and length with your old part. Contact us with your engine model for confirmation.

Q2: What is the installation procedure for this plunger and barrel set?

Installation requires precision. Ensure the pump housing is clean. Lubricate the new plunger and barrel with clean diesel fuel or engine oil during assembly. Do not force the plunger into the barrel; it should slide smoothly. Tighten to the manufacturer’s specified torque. We recommend professional installation by a qualified diesel mechanic.

Q3: How should I store unused plunger and barrel assemblies?

Store in a clean, dry environment within its original packaging to prevent rust and contamination. The recommended storage temperature is between 0°C and 40°C. Avoid exposure to moisture or corrosive chemicals. If stored long-term, consider applying a light rust-preventative oil.