Genuine&High-quality Engine Pistons

As close partner with Cummins; Caterpillar; Perkins; Komatsu; Deutz; Weichai; Yuchai; SDEC; MTU and MAN,EMAC exporting lots of engine pistons every year to support our engine and equipment sales as priority, not targeting profit only.

Extensive Resources

The demand for the power system varies all the time, there are lots of customized requirements from customers, which need lots of special engine accessories resouces. PartMac continuously collects the engine accessories resource, which greatly helps our customers reduce their sourcing and communication costs in their customized power system development.

Professional Provider

As a professional powertrain system provider, EMAC also develops engine extended powertrain system products, including transmission, transfer case, axle, and suspension for automotive applications, as well as gearbox and propeller for marine applications. PartMac supplies all powertrain parts to support EMAC’s powertrain solution business.

OEM & ODM

PartMac have connections with lots of high quality, high standard parts OEM factory in China, which most of them are the OEM factory of international leading brands, PartMac provides bridge to overseas partner to these manufacturers, providing efficient and reliable OEM & ODM services, as well as the function of factory inspection, products testing, quality check, after-sales treatment etc, greatly helping overseas partner reduce their purchasing and communication costs.

PartMac-Premium Parts Solution Provider

Committed to be the reliable parts solution provider, PartMac is a sub-brand ofEMAC Group that focuses on providing high-quality and high standard spare parts to support of our engine, power system, complete machine and equipment sales.

Committed to providing original and high-quality spare parts for all kinds of engines, bus, truck, construction equipment and other machines around the world, PartMac is a sub-brand of EMAC Group that focuses on spare parts and after-sale service.
With well-educated, international background and experienced operation team, and years of rich experiences in shipbuilding industry, PartMac can easily understand and respond to customer needs, significantly reduce customer’s communication costs.
Our core business philosophy is “A Promise is a Promise”, and practice the attitude of “Be realistic, Be innovative”..… Read More

SinoMac, with 12 years of expertise, is your one-stop power system provider for all applications. We take pride in our electric and train-related products, ensuring that our clients receive the best performance and support in these areas. Additionally, SinoMac is dedicated to offering comprehensive solutions ranging from automotive powertrain systems to new energy locomotive, from water pump drive packages to complete generator sets, and from marine propulsion systems to marine power systems. Our products and services span a wide range of applications, including but not limited to, the power needs of offshore vessels. By working closely with global partners, SinoMac can provide competitive pricing and high-end power solutions. Choose SinoMac for professional, reliable, and comprehensive power system support….Read More

With the mission of “Better Power, Better World”, EMAC gathering a brilliant well-educated team, all of EMAC’s team members are have English background, from sales to engineers, from marketing team to administration team, our good English foundation ensuing the ability of smooth communication with all customers.
EMAC is also gradually building our global services network, from branch companies to joint ventures, from local sales representatives to local after-sales services partners, we continuously expanding a global network that to provide better communication and services for our customers.
Till 2021, EMAC have branch companies and joint ventures in Thailand and Singapore, we also have after-sales service ability in this two countries. And we have sales representatives in Turkey, Spain, France and UK…Read More

As a 12 years experience profesional one-stop power system provider, EMAC have unique excellent ability with supplying complete power system for all kinds of applications.
From automotive powertrain system to industrial engine power system, from water pump drive package to complete generator set, from marine propulsion system to marine power system, by working closely with global leading companies’ factories in China, EMAC gives high-end solutions with competitive prices.
EMAC is excellent solution provider with a professional and dedicated team, we developed our advanced management system based on our past experience, and EMAC is the innovator of detailed visulization services that have professional video for every single products we sell…Read More

We care about your voice, from pre-sales communications, to sales communications, from after-sales complaints to customer review feedback, EMAC continuously collects all kinds of questions from customers, no matter questions on products, about business terms, marketing or management related, helping EMAC and customers to know each other better and grow together.
With the mission of “Better Power, Better World”, and the vision of “Make China Power the World”, EMAC looking for business partners in each country, that can working both as branch company or joint venture, by utilize the rich resources here in China, and our local business partner’s network resource and local service advantages, we hope can help all manufacturers in the world to improve their design ability, manufacturing capability, management level and products quality standard…Read More

Original Piston

Original Pistons ( Cummins, Caterpillar, Komatsu, Deutz, etc) are factory-certified, genuine service parts that mirror the exact material, dimensions, and surface treatment of the pistons fitted on the production line. Validated through full-engine dyno durability, thermal-shock, and vehicle road tests, their thermal-expansion profile, wear-resistant coating thickness, and ring-groove tolerances are perfectly matched to the ECU calibration, preserving factory power, fuel economy, and emissions while retaining OEM warranty coverage—the benchmark for “as-new” reliability.

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International Piston

International pistons (FP Diesel, Bosch, etc) are specially designed to serve OE factories. Utilizing high-silicon aluminum, ceramic-reinforced or steel-top/aluminum-skirt composites, their dimensional accuracy overlaps 95 % of the OEM tolerance band, and they are certified to ISO/TS 16949. Offering superior cost-effectiveness and a worldwide distribution network, they are the go-to choice for workshops balancing quality and budget.

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Premium Aftersales Piston

Premium aftersales pistons( CRRC, Jiangbin, Binzhou, etc) are engineered by specialized performance manufacturers for tuned, racing, and heavy-duty commercial applications. Constructed from forged 2618 or 4032 aluminum with anodized or DLC coatings, thicker crowns, and integrated oil-cooling galleries, they tolerate 20 % or more boost increase and higher BMEP. CNC-machined profiles are 3-D-scanner verified to guarantee optimal ring seal, minimal friction, and extended service life under extreme loads—ideal for those demanding both power gains and long-term durability.

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OEM Piston

OEM pistons (Jiangbin, Binzhou, etc) are produced by Tier-1 suppliers designated by the vehicle manufacturer for the assembly line. Identical in material and process to Original pistons, they carry OE-specific packaging and traceability codes and are distributed solely through authorized dealers or OEM parts channels. Choosing OEM gives you factory-level quality without the “genuine-box” premium, making it a cost-efficient, warranty-safe alternative for dealer and specialist workshops.

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Find Engines by Series or Type

Below list is the engines classified by engine type, you can also find engines classified by series in the top menu.

Original Piston Brand

Dongfeng Engine Piston

Dongfeng Engine Pistons – Precision Power for High-Performance Diesel Engines. Backed by decades of engine manufacturing expertise, Dongfeng pistons are engineered specifically for high-performance diesel engine platforms. As a core component of the power system, our pistons adhere to strict international technical standards and are widely used in heavy-duty trucks, construction machinery, and luxury coaches.

MTU Piston

The Cornerstone of Power Forged by Century-Old German Precision. In Germany’s engine manufacturing sector, the name MTU (MTU Friedrichshafen GmbH) stands for century-old precision engineering, supreme reliability and cutting-edge technology. A subsidiary of the Daimler-Benz Group, MTU specializes in diesel engine production, with products covering a power range from 35 kW to 9,000 kW. Its engines are widely used in ships, railway locomotives, heavy-duty vehicles and power generation equipment, alongside comprehensive power system solutions.

SDEC Piston

Founded in 1947 along the Huangpu River as the former Shanghai Diesel Engine Factory, SDEC boasts more than 70 years of heritage in Chinese power technology. Restructured in 1993 into a state-controlled enterprise issuing A-shares and B-shares domestically and overseas, it is now a large national high-tech enterprise under SAIC Group.

Yuchai Piston

Since its establishment in 1951, Yuchai has always been at the forefront of China’s internal combustion engine industry.Behind Yuchai engines’ outstanding reputation for “high reliability, long service life and low operating costs” lies the piston — a core moving component that withstands in-cylinder burst pressure and transmits combustion energy.

Weichai Piston

79 Years of Precision Forging, Forging the Soul of Chinese Power.Since its establishment in 1946, Weichai has always stood at the commanding height of China’s internal combustion engine industry.

Deutz Piston

A Century of German Precision, Forging a Global Benchmark in Power.Founded in Cologne, Germany in 1864 by Nikolaus August Otto and Eugen Langen, the world’s first engine manufacturing plant marked the birth of DEUTZ.

Komatsu Piston

A Century of Precision, Forging the Soul of Construction Machinery Power.Established in 1921, Komatsu Ltd. is a world-leading manufacturer of construction machinery and engines.

Perkins Piston

90+ Years of British Precision, Building the Global Off-Highway Power Core.Founded in Peterborough, UK, in 1932 by Frank Perkins, Perkins Engines introduced the world’s first high-speed diesel engine.

MAN Piston

Century of German Precision from the Father of the Diesel Engine, Forging a Global Power Legend.In 1897, Rudolf Diesel successfully ignated the world’s first diesel engine at the MAN Augsburg plant.

Caterpillar Piston

A Century of Power Leadership, Forging the Core of Global Industry.Since its founding in 1925, Caterpillar has stood at the pinnacle of global power equipment. In 1931, Caterpillar launched its first diesel engine, the D9900 “Old Betsy”.

International Piston Brand

Premium Aftersales Piston

Binzhou Piston

Craftsmanship Forges the “Heart” of Chinese Pistons.In the exhibition hall of Binzhou Piston, the slogan “Work hard to be the best, work harder even be the best” is prominently displayed, which accurately reflects the 70-plus-year development journey of this enterprise founded in the early days of the People’s Republic of China.

Jiangbin Piston

Military-Grade Quality Forges China’s Piston Highland.Inside Hunan Jiangbin Machinery (Group) Co., Ltd. (hereinafter referred to as “Jiangbin Company”),

OEM Piston

Binzhou Piston

Green & Intelligent Transformation of an Invisible Champion. At the critical position where the engine, the power “heart”, operates, Binzhou Piston always upholds a restrained and steady commitment.

Jiangbin Piston

Military-Grade Quality Forges China’s Piston Highland. Behind the precise operation of the engine—the power “heart”—the piston acts as the core moving part that bears explosion pressure and transmits energy.