Product Overview

This professional-grade Diesel Engine Oil Return Screw is a critical component for fuel injection systems, designed for reliable replacement and repair applications. Manufactured in Shandong, China, this hex head steel bolt is available in a comprehensive range of metric sizes from M6 to M24, ensuring compatibility with various diesel engine configurations. We serve a global B2B clientele, with fast and reliable shipping to major industrial markets across North America, Europe, Asia-Pacific, the Middle East, and South America.

Key Features & Benefits

• High-Quality Construction: Made from durable steel with a hex head design for secure installation and long-lasting performance under high-pressure fuel system conditions.
• Precision Engineering: Manufactured to exacting specifications to ensure a proper seal and prevent oil leaks in the fuel return circuit.
• Versatile Size Range: Available in a wide selection of metric thread sizes (M6, M8, M12, M14, M16, M18, M20, M22, M24) to fit various engine makes and models.
• Direct Replacement: Designed as a direct OE replacement part, simplifying inventory management for workshops and distributors.
• Reliable Performance: Tested for durability to withstand the thermal and mechanical stresses of diesel engine operation.

Technical Specifications

OEM Cross-Reference

This oil return screw is commonly referenced by the following OEM number:

• OEM NO: M14 (This denotes the standard metric thread size. Please verify your specific engine’s OEM part number for exact fitment.)

Compatibility

This screw is a standard component used in the fuel injection systems of a wide range of diesel engines. It is suitable for use in:

• Engine Brands: Commonly used in engines from Caterpillar, Cummins, Detroit Diesel, Perkins, Deutz, Yanmar, Kubota, and other major manufacturers.
• Vehicle Applications: Compatible with heavy-duty trucks, construction machinery (excavators, bulldozers), agricultural tractors, marine engines, and generator sets.
• Note: Always verify the thread size (M6 to M24) and pitch required for your specific engine model before purchase.

Global Supply & Distribution

We offer comprehensive global logistics to support your B2B operations:

• Worldwide Shipping: We partner with major carriers including DHL, UPS, FedEx, EMS, and TNT for reliable delivery.
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy), Asia-Pacific (Australia, Japan, South Korea, Singapore), Middle East (UAE, Saudi Arabia), and South America (Brazil, Chile).
• Fast Delivery: Standard delivery time is 3-35 working days, depending on destination and shipping method. Express shipping options are available for urgent orders.
• Export Experience: We are experienced in international trade, ensuring proper documentation and customs clearance support for all shipments.

Quality Assurance

• Manufacturing Standards: Each screw is manufactured under strict quality control procedures to ensure dimensional accuracy and material integrity.
• Warranty: All products are backed by a 6-month warranty against manufacturing defects.
• Customer Service: Our team provides 24-hour customer service to address any pre-sales or after-sales inquiries.

FAQ

Q1: How do I select the correct oil return screw for my engine?
A: Identify the thread size and pitch of your current screw. Our range covers standard metric sizes from M6 to M24. If you are unsure, measure the diameter and thread pitch, or consult your engine’s parts manual. The OEM number in our listing (M14) indicates a common size, but we stock all sizes listed above.

Q2: What is the installation procedure for this screw?
A: Installation is straightforward. First, clean the mounting hole and ensure no debris is present. Apply a small amount of thread sealant or diesel-resistant lubricant to the threads. Hand-tighten the screw, then torque it to the manufacturer’s specification for your engine. Avoid over-tightening, which can damage the threads or the fuel system component.

Q3: Can I use this screw for applications other than a fuel injection system?
A: This screw is specifically designed for use in diesel fuel injection systems, particularly for oil return lines. While it is a standard hex head bolt, we recommend using it only for its intended purpose to ensure proper sealing and performance. For other applications, please consult our team for the correct part.