Product Overview

This high-quality Diesel Fuel Injection Pump Rotor Head, referenced as 7180-977S and 981S (3/8.5R), is a critical component for DPA-type fuel injection systems. Manufactured to precise OEM specifications, this rotor head ensures reliable fuel metering and distribution for diesel engines. We serve a global B2B clientele, with major markets in North America, Europe, Southeast Asia, the Middle East, and South America, providing consistent supply for industrial, agricultural, and automotive diesel applications.

Key Features & Benefits

• Precision Engineering: Machined to exacting tolerances for optimal fuel pressure and timing control.
• Durable Construction: Made from high-grade alloy steel for extended service life and resistance to wear.
• Direct Replacement: Designed as a drop-in replacement for standard DPA pump heads, simplifying repair and overhaul.
• Consistent Performance: Ensures smooth engine operation, improved fuel economy, and reduced emissions.
• Rigorous Testing: Each unit is factory-tested to guarantee reliability and performance under load.

Technical Specifications

OEM Cross-Reference

• 7180-977S
• 981S
• 3/8.5R

Note: This part is a direct cross-reference for standard DPA pump head assemblies used in CAV and Lucas-type injection pumps. Verify your specific pump model before ordering.

Compatibility

• Engine Types: Diesel engines equipped with DPA (Distributor Pump Assembly) fuel injection pumps.
• Vehicle Applications: Trucks, tractors, agricultural machinery, and industrial diesel equipment.
• Common Models: Suitable for 3-cylinder diesel engines requiring a 8.5mm rotor head.

Global Supply & Distribution

We offer worldwide shipping with fast and reliable logistics. Our inventory is strategically managed to ensure quick dispatch to major ports and industrial hubs including:

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

We have extensive experience in international trade, handling customs documentation and compliance for smooth delivery to your doorstep. MOQ is flexible (6 Pcs) to support both small workshops and large distributors.

Quality Assurance

• Manufacturing Standards: Produced in ISO-certified facilities in Shandong, China.
• Testing: Each rotor head undergoes hydraulic pressure and dimensional checks.
• Warranty: Backed by a 4-month warranty against manufacturing defects.
• Packaging: Secure neutral or OEM packaging to prevent damage during transit.

FAQ

Q: How do I confirm this rotor head fits my injection pump?
A: Check your pump’s identification plate for the model number (e.g., DPA 3243Fxxx). This rotor head (7180-977S) is designed for standard DPA pumps with a 8.5mm diameter and 3-cylinder application. If your pump uses a different diameter or cylinder count, please contact us with your pump details for verification.

Q: What is the installation procedure for this part?
A: Installation requires disassembling the pump head, removing the old rotor, and installing the new one with clean hands and tools. It is critical to maintain absolute cleanliness to prevent fuel system contamination. We recommend professional installation by a qualified diesel mechanic. Ensure the pump timing is re-calibrated after replacement.

Q: How should I store spare rotor heads?
A: Store in a cool, dry, and dust-free environment. Keep the part in its original packaging until ready for use to protect the precision-machined surfaces from corrosion and physical damage. Avoid exposure to extreme temperatures or moisture.