As a professional manufacturer of hydraulic clutch components, we have over two decades of experience specializing in clutch master cylinder development and export. Our products serve markets in Europe, the Middle East, Africa, and South America. We support both OEM and ODM models, offering rapid development based on drawings or samples.

Search products (by OE Number)

We provide a wide range of master cylinder products categorized by OE numbers and compatible brands for easy reference and selection.

Clutch Master Cylinder products

Picture	Product	OEM	Description	DIA	FSD	SPS
	Clutch Master Cylinder 4700530420	4700530420	NISSAN UD J.P
	Clutch Master Cylinder 4700530300/30620-9Z00B/4700530320/21706994	4700530300 30620-9Z00B 4700530320 21706994	NISSAN UD J.P
	Clutch Master Cylinder ME-165130	ME-165130	MITSTUBISHI
	Clutch Master Cylinder 31420-1610/GND 20	31420-1610 GND 20	HINO (K13C)
	Clutch Master Cylinder 46801-Z5007/46801-Z5006/GND 19	46801-Z5007 46801-Z5006 GND 19	NISSAN
	Clutch Master Cylinder 46801-Z2001/46801-Z2003/GND 18	46801-Z2001 46801-Z2003 GND 18	NISSAN (RD8 CD46 CW52-67)
	Clutch Master Cylinder 46801-Z4002/900786-U/GND 17	46801-Z4002 900786-U GND 17	NISSAN
	Clutch Master Cylinder 31420-36130/GND 12	31420-36130 GND 12	TOYOTA
	Clutch Master Cylinder 631661AM/96822028	631661AM 96822028	DAEWOO
	Clutch Master Cylinder 629503AM/41600-7C100/41600-7C200	629503AM 41600-7C100 41600-7C200	HYUNDAI
	Clutch Master Cylinder 629310AM/41600-8C600	629310AM 41600-8C600	HYUNDAI
	Clutch Master Cylinder 31410-1030	31410-1030	HINO (RLWM017) (ZM100)

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Full range of brake and clutch parts, Especially for Trucks and Cars

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What is a Clutch Master Cylinder?

The clutch master cylinder plays a critical role in the hydraulic clutch system. When the driver depresses the clutch pedal, the piston inside the master cylinder moves forward, pressurizing the brake fluid and transferring it through a fluid line to the slave cylinder—activating the clutch release mechanism.

Structure of the Clutch Master Cylinder

Part Name (English)	Function Description (English)
Air Vent Port	Balances internal pressure, prevents vacuum buildup.
Plug	Seals vent or service ports for maintenance.
Baffle Plate	Directs fluid flow, optimizes hydraulic routing.
Cap	Seals the reservoir, protects against contamination.
Screw	Fastens parts securely, ensuring system integrity.
Retaining Washer	Holds parts in place, prevents axial movement.
Reservoir Chamber	Stores brake fluid, ensures steady hydraulic supply.
Gasket	Seals mating surfaces, prevents fluid leakage.
Washer	Distributes load evenly during fastening.
Mounting Bolt	Secures the master cylinder to the vehicle.
Push Rod End Joint	Connects the push rod to the pedal assembly.
Push Rod	Transfers force from pedal to piston.
Dust Cover	Prevents dust from entering the cylinder.
End Cap	Closes the cylinder end, provides access for servicing.
Cylinder Seal Ring	Secondary seal to enhance system airtightness.
Piston	Core component that generates hydraulic pressure.
Elastic Washer	Absorbs shock, increases part durability.
Piston Cup Seal	Key sealing part preventing hydraulic leakage.
Return Spring	Controls piston return, maintains rest position.
Hydraulic Port Connector	Connects to hydraulic lines, transmits fluid to slave cylinder.

👉If you want to know more about Clutch Master Cylinder, please check out our article: Clutch Master Cylinder Full Guide: Definition, Symptoms, Repair & Cost

Key Component: Piston Cup Seal

The piston cup seal is a vital element in ensuring the clutch system’s hydraulic integrity and responsiveness. We exclusively use high-grade Datwyler seals from Switzerland, which offer:

Heat- and oil-resistant material suitable for harsh environments

Precision-molded for exact fit with pistons and bores

Tested for over 400,000 cycles—beyond standard lifecycle demands

Double-tested for air-tightness and vacuum sealing performance

Clutch Master Cylinder Working Principle

Initial Position

The piston is at rest; fluid freely flows through inlet ports. No pressure is applied.

Pedal Pressed

Pedal force pushes piston leftward; fluid is pressurized and sent to the slave cylinder.

Clutch Disengaged

Hydraulic pressure pushes the slave piston, releasing the clutch.

Pedal Released

Spring returns piston; vacuum draws fluid from reservoir to refill the chamber.

System Refill/Compensation

Compensation ports adjust fluid volume due to temperature or leakage changes.

About Us

We are a manufacturer specialized in brake and clutch hydraulic systems with over 20 years of experience. Our clutch master cylinders are manufactured to OEM standards and exported to 80+ countries across Europe, the Middle East, and the Americas—ensuring exceptional sealing performance and long-term reliability.

Years of Production experience

9600

Factory area(m²)

3000+

Product category

2,000,000+

Annual Production

Learn more

Our Product Advantages

High-density aluminum alloy casting

In-house cast ZL11 aluminum with T6 treatment for strength and corrosion resistance.

4-axis CNC precision machining

4-axis CNC and deep-hole drilling enhance sealing performance and dimensional accuracy.

Complete sealing and lifecycle testing

Each batch undergoes air-tightness, vacuum, and lifecycle testing.

Cross-platform compatibility

Compatible with major brands including Toyota, VW, Ford, Hyundai, and Changan.

Rapid customization support

Supports drawing/sample customization, branding, and 1-on-1 engineering services.

Manufacturing Capabilities

We operate a fully integrated production chain—covering aluminum gravity casting, 4-axis machining, seal assembly, and final testing—all in-house to ensure quality control and reliable lead times.

8 aluminum gravity casting lines

28 CNC machining lines with 4-axis centers & deep-hole drills

28 CNC lines including 4-axis and deep-hole machines

8 master cylinder assembly lines + 4 booster assembly lines

8 dedicated clutch cylinder assembly lines

Full in-house lab for life cycle, vacuum, air-tightness & fatigue testing

In-house tooling department for fast prototype development

Download Center

Product Catalog by OE/Brand

Certification & Testing Reports

Visual Installation Manual

Full-size measurement & concentricity testing

Air-tightness testing and negative pressure testing

Surface inspection

Lifespan simulation testing (select products)

Pre-packaging random inspection and traceability code recording

Quality Control & Certifications

All clutch master cylinders undergo the following testing procedures to ensure reliable and stable performance before leaving the factory:

Full-size measurement & concentricity testing

Air-tightness testing and negative pressure testing

Surface inspection

Lifespan simulation testing (select products)

Pre-packaging random inspection and traceability code recording

Frequently Asked Questions

What are the common leakage points on a clutch master cylinder?

Leakage usually occurs due to aging piston cups, poor sealing, or clogged inlet ports.

Does the clutch master cylinder need regular replacement?

Periodic inspection is recommended. Replace the unit if seals deteriorate or performance drops.

Do you support non-standard customization?

Yes, we support various non-standard customizations such as port sizes, reservoir styles, and sensor mounting positions.

Get a Quote or Sample

Free samples & engineering support available Open to global distributor & brand partnerships

Leave A Message

Products

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Products By Brand OEM Services About us Resource

Email: cth4921687671996@gmail.com

Phone: 0086-15957686676

Factory Add: No. 333, Chengzhong Road, Yuhuan City, Taizhou City, Zhejiang Province, China

+86 15957686676

cth4921687671996@gmail.com

+86 15957686676

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Brake Master Cylinder