YH AUTO PARTS
Source factory for gasoline & diesel piston assemblies · COFAP & DPEB brands · 30 years of manufacturing · Orders worldwide
Piston Assemblies from a 30-Year Source Factory
YIHENG TRADING specializes in manufacturing, customizing and selling high-quality gasoline & diesel piston assemblies, with around 30 years of experience in engine core components.
We operate two brands — the COFAP assembly brand and DPEB, our US-market piston assembly brand — with annual sales of about RMB 60 million. Serving international markets, we take orders worldwide and deliver custom products, matching solutions and reliable supply.
Guided by quality assurance, integrity and win-win cooperation, we maintain full-process quality control — from incoming inspection and precision machining to final testing and packaging — striving to be your trusted piston assembly supplier.
ENGINE PISTONS & PISTON ASSEMBLY
- OEM & Aftermarket Parts
- Stable Quality (30 years of manufacturing)
- Competitive Price
- Fast Delivery
- Worldwide Export — Orders Accepted Globally
3D 活塞探索器
Loading Engine
All Pistons
1MZ-FE 3,0L Engine Piston Kit
3S 2,0L Engine Piston Kit
4S 1,8L Engine Piston Kit
5A 1,5L Engine Piston Kit
All Piston Rings
德国原厂 EA837 3.0T 活塞环改进型
奇瑞宝马A15
【宝马】N54/N55/N46 B30
【宝马】N52 B25
Two Brands · 30 Years of Source Manufacturing
DPEB · US-Market Piston Assembly Brand
High-quality piston assemblies for US-market passenger cars and diesel engines, with custom development and volume supply.
COFAP · Assembly Brand
A mature assembly product line with stable supply, serving global aftermarket and OEM-fit markets.
OEM Packaging · Batch Traceability
Every batch ships with complete labeling and batch information — traceable from incoming inspection to dispatch. Sample-based customization supported.