Engine Components & Automotive Engine Parts Supplier

Home

Products

NEV Charging Station

Range Extender Generator

Engine Long Block

Engine Short Block

Solutions

Production Efficiency

Quality Control

Technology Support

Supply Chain Management

Partner Program

Support

Blogs

Maintenance Tips

Warranty

About HNP

Contact Us

One-Stop Power System Solutions Provider — Long Blocks, Generators & NEV Charging Stations

We provide premium long blocks, alongside generators and new energy vehicle (NEV) charging stations. With 35 years of industry expertise, we leverage our rigorous quality assurance system and deep technical know-how to deliver precision-matched solutions for NEV range-extended generator systems—empowering green mobility with strong, reliable power and driving the high-quality development of the new energy vehicle industry.

Explore Products

Global Brands

Aftermarket Parts Suitable For The Following Branded Engines

One-Stop Power System Solutions Provider — Long Blocks, Generators & NEV Charging Stations

We are a one-stop solutions provider for power components, specializing in the R&D and supply of engine long cylinder blocks and engine parts, while also expanding into generators and new energy vehicle (NEV) charging stations. We offer comprehensive services to meet diverse customer needs.
Long cylinder blocks are the core component of range-extended vehicle generators. Our products are perfectly suited for NEV range-extended generator systems, delivering reliable power for green mobility and supporting the high-quality development of the new energy vehicle industry.

What we do

Production Efficiency

Quality Control

Technical Support

Supply Chain Management

Our advanced manufacturing processes and automation technology ensure high production efficiency, reducing lead times and costs.

Stringent quality control measures are implemented at every stage of production to guarantee the reliability and durability of our products.

Our team of skilled engineers provides comprehensive technical support, offering solutions and assistance to ensure seamless operations.

Efficient supply chain management ensures timely delivery of raw materials and components, optimizing inventory levels and reducing waste.

Why Choose us

Become an HNP Partner

Expand Your Business with High-Quality Engine Parts

Join HNP’s trusted partner network and unlock new business opportunities. Benefit from competitive pricing, extensive product range, dedicated technical support, and reliable after-sales service. Together, we can drive success.

Join Us

Who we are

Henan Hangnei Engine Machinery Co., Ltd. was founded in 1991. It is an enterprise integrating R&D, production, and sales of engines and accessories. We offer a wide range of engine parts for SUVs, pickups, and light trucks, including ISUZU, Foton, Cummins, JAC, and more. With top-tier components from leading Chinese enterprises, our products ensure superior quality and performance. Our strong supply chain management provides competitive pricing, and we offer a 12-month warranty on all engine blocks. Serving millions of customers globally, Hangnei is a trusted leader in China's auto parts industry.

About Us

Get In Touch With HNP

Have questions or need a quote? Contact us now. Our professional team will respond to your consultation quickly to ensure that you get the most suitable engine components and the best service.

Contact us

HNP News & Blogs

Common EJ257 Long Block Problems and How to Prevent Them

Dec 12, 2025

Learn the most common EJ257 long block problems, the ringland failure, bearing issues, overheating and discover proven ways to prevent costly engine damage.

4.3 Long Block Specs Explained: Power, Durability, and Compatibility

Dec 12, 2025

Explore the power, durability, and compatibility of the 4.3 long block engine. Learn key specs, performance benefits, and why it remains a reliable GM engine choice.

Why the 12 Valve Cummins Long Block Is Considered One of the Most Reliable Diesel Engines

Dec 05, 2025

Discover why the 12 valve Cummins long block is considered one of the most reliable diesel engines. Learn about its mechanical design, durability, and performance benefits.

351 Windsor Long Block Basics: Why It Remains a Popular Engine Choice Today

Dec 05, 2025

Discover why the 351 Windsor long block remains a popular engine choice today. Learn its key advantages, durability, performance potential, and why builders still prefer it.