Cap Tandem Master Cylinder

The Wilwood Cap Tandem Master Cylinder is a precision-engineered replacement cap designed for Wilwood tandem master cylinders used in high-performance braking systems. Built for motorsports enthusiasts, street rod builders, and brake system technicians, this component seals and protects the master cylinder reservoir while maintaining system integrity under demanding conditions. The screw-on design provides reliable access for fluid checks and maintenance without requiring complete system disassembly.

Constructed from durable aluminum and finished in black paint, the Cap Tandem Master Cylinder delivers corrosion resistance and a clean, professional appearance that complements any engine bay aesthetic. The aluminum construction minimizes weight while maintaining rigidity and thermal stability, critical factors in brake systems exposed to high temperatures during extended braking events. The screw-on mechanism ensures a positive seal that prevents brake fluid contamination and oxidation, which can degrade hydraulic performance and shorten component lifespan.

This cap is ideal for buyers installing or maintaining Wilwood tandem master cylinders in custom braking applications, including circle track racing, autocross, road racing, and high-performance street vehicles. Direct fitment ensures compatibility with Wilwood tandem master cylinder assemblies, eliminating fitment guesswork and installation delays. The compact 3.45 x 0.35 x 7.45-inch profile and lightweight 0.46-pound design integrate seamlessly into tight engine compartments while the black finish resists fading and maintains aesthetic consistency across multiple service cycles.