Product Description
The types of plunger couples produced by Huahui Oil Pump and Nozzle Company include: BQ series, No. I series, No. II series, A series, AK series, AD series, P series, and high-pressure common rail series, with diameters ranging from 5 to 18 mm. With inclined grooves and spiral grooves with different leads and different rotational directions, the product can meet the needs of oil pumps for diesel engines with different performances.
Plunger couples are indispensable precision components in fuel injection pumps. It consists of a plunger and a plunger sleeve. It has been precision processed and the matching clearance is strictly controlled at 0.0015 - 0.0025mm. Through the reciprocating motion of the plunger, fuel pressurization and precise distribution are achieved to ensure stable engine power output.
Product Description
The Plunger Assembly AK Series is a high-precision component designed for diesel fuel injection pumps. It plays a critical role in pressurizing and delivering fuel to the combustion chamber in a controlled and efficient manner. Engineered for demanding operating environments, the AK Series features advanced metallurgy and tight manufacturing tolerances to ensure consistent fuel delivery, extended service life, and optimal engine performance. It is widely used in single-cylinder and multi-cylinder diesel engines across agricultural, industrial, and automotive sectors.
Product Advantages
High Precision Engineering
Manufactured with exact tolerances for reliable and consistent fuel injection, even under high-pressure conditions.
Superior Material Quality
Made from high-strength alloy steel with surface hardening treatment for enhanced resistance to wear, corrosion, and fatigue.
Stable Performance
Provides smooth and efficient fuel delivery, helping reduce emissions and improve fuel economy.
Broad Compatibility
Available in multiple specifications for compatibility with a wide range of diesel injection pumps and engine types.
Product Applications
The AK Series Plunger Assembly is commonly used in:
Agricultural Equipment
Diesel engines in tractors, tillers, and irrigation pumps
Construction Machinery
Concrete mixers, compactors, and portable machinery
Industrial Engines
Stationary power generators and small diesel compressors
Automotive Applications
Light-duty commercial diesel vehicles and transport equipment
Its rugged design makes it ideal for harsh environments and continuous-use applications.
FAQ
How long is your delivery time?
One week for spot goods, 60 days for orders
Are you a trading company or a manufacturer?
Manufacturer
What is your MOQ?
100 pieces
What engines are compatible with the AK Series plunger assembly?
The AK Series is designed for a wide range of diesel engines using inline or rotary fuel injection pumps. Please refer to your pump model or consult us for compatibility.
What are the signs of a worn plunger assembly?
Symptoms include hard starting, irregular engine idling, excessive smoke, poor fuel economy, or a drop in power output.
How often should the plunger assembly be replaced?
Depending on operating conditions and fuel quality, it may need replacement after 1,000–1,500 engine hours or sooner if performance issues arise.
Can I service or replace the plunger assembly myself?
Installation requires precise alignment and calibration. It’s recommended to have it installed or serviced by a qualified technician.
Company Introduction
Changzhou Huahui Fuel Injection Equipment Co.,Ltd's main products include S and P series long and short injector assembly and injector nozzle parts. Injection pumps used in 165-1125 single-cylinder engines and plungers and oil delivery valve parts used in injection pumps. In recent years, with the efforts of our scientific research personnel, we have successively developed P series BQ type, PW type, P7 type, P8 type, PE type, PN type, P7100 type, P2000 type, high-pressure common rail series, etc., a total of more than 100 types of plunger parts and electronically controlled single pumps.
