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Professional Custom Piston Rings Manufacturer & Supplier

With over 30 years of experience, HEARTEN delivers high-performance piston rings for gasoline and diesel engines, motorcycles, heavy trucks, garden machinery, and construction equipment.

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About HEARTEN Auto Parts

Guangzhou Hearten Auto Parts Co., Ltd (formerly South China Piston Ring Co., Ltd) is a leading enterprise in China specializing in the production of piston rings using modern technology. Founded in 1992, we are recognized as a high-tech enterprise by the Guangzhou Municipal Science and Technology Commission.

With over three decades of experience, we have perfected core technologies such as nitriding and chrome plating, positioning ourselves at the forefront of piston ring innovation in China.

Learn more about our history →
HEARTEN Factory

30+ Years of Excellence

1992

Founded as state-owned enterprise

2009

Restructured as private enterprise

2018

Awarded High-Tech Enterprise

2022

Annual output >20 million units

Our Piston Ring Products

Gasoline Engine Piston Rings

Gasoline Engine Rings

For passenger cars and motorcycles. Diameter range ∮30–∮170mm.

  • Material: Cast Iron, Ductile Cast Iron
  • Coating: Chrome, Nitriding, PVD
  • Cross-section: P, K2, T1, IB
Diesel Engine Piston Rings

Diesel Engine Rings

Heavy-duty rings for trucks, construction, and industrial machinery.

  • Material: Steel, Ductile Cast Iron
  • Coating: DLC, CKS, Titanium
  • Cross-section: BF-K2, T1-K3, UC
Motorcycle Piston Rings

Motorcycle Rings

High-performance rings for 2-stroke and 4-stroke engines.

  • Diameter: ∮30–∮100mm
  • Coating: Phosphate, Ferroxided
  • Configurations: C1, BC1, E-C1
Oil Control Rings

Oil Control Rings

Precision-engineered for optimal oil management.

  • Type: 2-Piece (E-BC series)
  • Type: 3-Piece (NIFF-S/H)
  • Coating: Chrome, Nitriding

Custom Cross-Sections

We produce all standard and custom cross-sections.

  • P, K2, BF, T1, IB, IC
  • BF-K1-IC, T1-K1-IB
  • B1-TUC, UC, NIFF Series

Garden Machinery Rings

Durable rings for lawnmowers, chainsaws, and trimmers.

  • Material: Cast Iron
  • Coating: Chrome Plating
  • Configurations: TUC, UC

Construction Equipment Rings

Heavy-duty rings for excavators, loaders, and bulldozers.

  • Diameter: ∮100–∮170mm
  • Material: Steel, Ductile Iron
  • Coating: DLC, PVD

General Machinery Rings

Versatile rings for industrial engines and pumps.

  • Customizable dimensions
  • Multiple surface treatments
  • High wear resistance

OEM & ODM Service

HEARTEN offers full OEM and ODM services. We can produce custom piston rings according to your specifications, including packaging in your branded bags and boxes. Whether you need small batches or mass production, we deliver precision and consistency.

Custom Design

We develop rings based on your drawings, samples, or performance requirements.

Branded Packaging

Your logo, colors, and packaging design – we handle it all.

Quality Assurance

All products meet TS16949 and ISO9001 standards with <6PPM defect rate.

Why Choose HEARTEN?

Quality Control

Certified under TS16949 and ISO9001. Our defect rate is below 6PPM, proven through long-term cooperation with global garden machinery leaders like TTi.

Advanced Manufacturing

State-of-the-art production lines with high-end equipment including nitriding, chrome plating, PVD, DLC, and mosaic alloy forming systems.

30+ Years Experience

Since 1992, we’ve been perfecting piston ring technology. Trusted by clients worldwide for reliability, innovation, and consistent delivery.

Frequently Asked Questions

What materials do you use for piston rings?

We use Cast Iron, Ductile Cast Iron, and Steel depending on application requirements.

What is your production capacity?

Our annual output exceeds 20 million units, with 40% for motorcycles, 35% for passenger cars, and 25% for diesel engines.

Do you offer custom packaging?

Yes, we provide OEM/ODM packaging services with your branding on boxes and bags.

What surface treatments do you offer?

We offer Nitriding, Chrome Plating, Titanium Plating, PVD, DLC, CKS, Phosphate, and Ferroxided treatments.

Are you certified?

Yes, we are ISO9001 certified and comply with TS16949 standards. We are also a Guangdong High-Tech Enterprise.

Get in Touch

Ready to partner with a trusted piston ring manufacturer? Contact us today for quotes, samples, or technical support.

Contact Information

Contact Person: Annie

Email: [email protected]

Phone / Fax: +86-20-22676608

Address: No.79, Ping Long Road, Huadu District, Guangzhou, China

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