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1608100-D01
HongPro
1608100-D01
The 1608100-D01 is a precision-engineered clutch master cylinder designed for reliability and optimal performance. Its core function is to convert pedal force into hydraulic pressure, enabling smooth and precise clutch disengagement for seamless gear shifting.
Manufactured to meet stringent OE specifications, it guarantees perfect compatibility and a direct fit. Key technical highlights include a durable aluminum body for superior heat dissipation and corrosion resistance, and a reinforced piston assembly rated for over 1.5 million actuations. The unit is pre-filled with high-performance DOT 4 fluid and undergoes 100% pressure testing (up to 2,500 psi) to ensure zero-leak operation from the first application.
This component is your trusted OEM-quality solution, delivering the durability and consistent performance that professional installers and drivers demand.
This clutch master cylinder is manufactured as a direct OE replacement part, ensuring a perfect, hassle-free installation. Every dimension, thread, and port is precision-machined to match the original specifications exactly. This eliminates potential issues with mounting bracket alignment or hydraulic line connection, saving valuable time and labor costs. You can be confident that this component will integrate seamlessly into the vehicle's system, restoring it to its original performance standard without any modifications required.
We utilize a high-grade aluminum alloy for the cylinder body, which provides exceptional resistance to corrosion and pitting from brake fluid. This is a critical upgrade over cheaper cast iron alternatives. The internal piston is reinforced with a high-strength phenolic resin composite, known for its excellent dimensional stability and low friction coefficient. This material combination is rigorously tested to withstand over 2 million actuation cycles without failure, ensuring long-term reliability and a significant extension of the component's service life under demanding driving conditions.
A primary cause of clutch master cylinder failure is internal and external fluid leakage. Our 1608100-D01 addresses this with a proprietary, multi-lip sealing system made from high-temp, fluid-resistant EPDM rubber. Each unit is 100% factory-tested, undergoing a final pressure endurance test at 2,500 PSI—far exceeding standard operating pressures. This zero-defect policy guarantees that the component you receive is free from leaks and will maintain optimal hydraulic integrity from the very first use.
Consistent pedal feel is paramount for driver confidence. This cylinder is engineered to prevent common issues like fluid aeration and pressure loss. The internal bore is finished with a micro-honed surface (achieving a roughness average of less than Ra 0.2 µm), which minimizes seal wear and ensures smooth piston travel. This precise engineering delivers a firm, responsive pedal feel and prevents the "spongy" clutch sensation often associated with inferior aftermarket parts, ensuring precise clutch engagement every time.
Trust is built on verifiable quality. Every batch of our clutch master cylinders is subjected to a comprehensive 12-point validation process, which includes dimensional checks, material analysis, and performance cycling. The product complies with international standards such as ISO 9001 for Quality Management Systems. This commitment to certified manufacturing processes ensures that you are not just buying a part, but investing in a reliable solution backed by a global benchmark of quality and consistency.
| Parameter | Specification | Notes / Standard |
| OEM Part Number | 1608100-D01 | Direct Replacement |
| Product Type | Clutch Master Cylinder | Hydraulic Actuation |
| Body Material | High-Grade Aluminum Alloy | ASTM B85, Die-Cast |
| Piston Material | Phenolic Resin Composite | High-Strength, Low-Friction |
| Bore Diameter | 15.87 mm (5/8") | Precision Honed to ±0.01mm tolerance |
| Fluid Type | DOT 4 | Compatible with DOT 3 |
| Port Thread Size | M10 x 1.0 | Standard Metric Fitting |
| Seal Material | EPDM Rubber (Ethylene Propylene Diene Monomer) | Resistant to moisture, heat, and glycol-ether based brake fluids. |
| Operating Pressure | 100 Bar (1450 PSI) | Continuous Duty |
| Burst Pressure | 250 Bar (3625 PSI) | Minimum |
| Factory Test Pressure | 172 Bar (2500 PSI) | 100% Unit Testing, 30-Seconds Hold |
| Durability Cycle Test | > 2,000,000 Actuations | Simulated In-Lab Testing per SAE J2971 |
| Operating Temperature | -40°C to +120°C (-40°F to +248°F) | - |
| Quality Certification | ISO 9001:2015 | Quality Management Systems |
Here are specific application scenarios of Clutch Master Cylinder:
The most common application for this clutch master cylinder is as a direct, drop-in replacement for a failing original part. Symptoms like a spongy or sinking clutch pedal, difficulty shifting gears, or visible fluid leakage from the reservoir indicate a compromised unit. Our product is engineered to precisely match OEM specifications, ensuring it restores the vehicle's clutch system to its original performance, eliminating these issues and providing a reliable, long-term solution.
During a full clutch repair—which often involves replacing the clutch kit, release bearing, and slave cylinder—installing a new master cylinder is a critical best practice. Replacing all hydraulic components simultaneously ensures balanced pressure and optimal performance across the entire system. Using our 1608100-D01 prevents new components from being strained by a partially failed master cylinder, guaranteeing a complete and lasting repair.
For fleet managers and professional workshops, minimizing vehicle downtime is a top priority. This component is an ideal maintenance part due to its certified durability and leak-proof guarantee. Its consistent quality, backed by rigorous pressure testing (up to 2,500 PSI), ensures reliable performance across multiple vehicles in a fleet. This reduces unexpected breakdowns and streamlines maintenance scheduling, providing significant operational cost savings.
High-mileage vehicles experience natural wear on all hydraulic components. This master cylinder, with its high-strength composite piston and corrosion-resistant aluminum body, is specifically designed to handle the demands of long-term use. It effectively restores a firm pedal feel and precise gear engagement, which is crucial for both driver comfort and vehicle safety, making it a trusted choice for revitalizing older vehicles.
For optimal performance and safety, we recommend professional installation. Begin by thoroughly cleaning the work area to prevent contamination. Bench-bleed the new cylinder before installation to ensure all air is purged from the start. Use only high-quality DOT 4 brake fluid. Connect the hydraulic line using a torque wrench, tightening the fitting to the specified 10-12 Nm (7-9 lb-ft) to prevent damage. After installation, perform a final system bleed and check for leaks. Test pedal feel; it should be firm and consistent, indicating a successful, air-free installation. Always consult vehicle-specific service data for precise procedures.
