Dorman CM640204 Clutch Master Cylinder

Overview of Dorman Clutch Master Cylinder CM640204

The Dorman CM640204 clutch master cylinder is designed specifically for manual transmission systems in Mazda RX-8 vehicles. Constructed from durable cast iron, this clutch master cylinder offers reliable performance and a precise fit for your RX-8's clutch system.

• Material: Cast iron for strength and durability
• Single outlet with M10 x 1.0 thread size
• Bore diameter of 0.625 inches for accurate hydraulic pressure
• Black finish with piston-type cylinder design
• Standard replacement grade for dependable operation
• Includes one clutch master cylinder without reservoir
• Compatible with single remote reservoir type

Detailed Product Description

The Dorman CM640204 clutch master cylinder is engineered to meet the specifications required by Mazda RX-8 manual transmission systems. Its cast iron construction ensures long-lasting durability under high-pressure conditions. The piston-type cylinder with a 0.625-inch bore diameter provides consistent hydraulic pressure to engage and disengage the clutch smoothly. This part features a single outlet with an M10 x 1.0 thread size, designed to connect seamlessly with the RX-8’s hydraulic lines. The black finish offers corrosion resistance, maintaining the component’s integrity over time. This clutch master cylinder is a standard replacement part, intended to restore proper clutch function without the need for pre-bleeding or pre-filling, and it is compatible with vehicles using a single remote reservoir setup.

Compatible Vehicles and Applications

This clutch master cylinder is compatible with the Mazda RX-8, providing a direct replacement for the original equipment part. It is suitable for owners seeking to maintain or restore the clutch hydraulic system’s performance in their RX-8 manual transmission models.

• Restores clutch hydraulic pressure for smooth gear shifts
• Replaces worn or leaking clutch master cylinders
• Eliminates clutch pedal sponginess or failure to disengage
• Addresses fluid leaks in the clutch hydraulic system
• Prevents clutch engagement issues caused by cylinder wear

Installation Notes and Tips

When installing the Dorman CM640204 clutch master cylinder, ensure the hydraulic system is properly bled to remove air and achieve optimal clutch performance. This part does not come pre-filled or pre-bled, so careful bleeding is necessary. Verify compatibility with the Mazda RX-8 model year and transmission type before installation. Use appropriate tools to avoid damaging the M10 x 1.0 outlet threads during connection.

Quality Assurance and Warranty

Dorman manufactures this clutch master cylinder to meet industry standards for manual transmission components. The cast iron material and precise machining contribute to reliable operation and longevity. While specific warranty details are not provided, Dorman parts typically come with a limited warranty against defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.