K&S TECHNOLOGIES 1903-0009 58-1001BK Standard-Pressure Radiator Cap Black - 16 PSI 1.1 Bar

OVERVIEW

K&S Technologies engineered this standard-pressure radiator cap to restore proper cooling system equilibrium and prevent engine overheating under load. The black-finished metal housing works with a reinforced high-temperature silicone seal to block steam escapes while maintaining stable internal pressure. As a direct OEM-style replacement, it secures reliable coolant circulation to keep Honda, Kawasaki, Suzuki, and Yamaha liquid-cooled engines running safely.

ENGINEERING & PERFORMANCE

Sustaining a precise 16 PSI (1.1 bar) metric pressure rating, the cap elevates the coolant boiling point to protect sensitive components like water pumps and thermostats. The upgraded silicone sealing surface compresses evenly against mating threads, resisting heat-induced shrinkage that typically leads to slow fluid loss and air pocket introduction. By holding pressure consistently until the valve opens, it directs excess coolant back through the overflow tank and maintains hydraulic stability during repeated thermal cycles.

KEY FEATURES

• 16 PSI / 1.1 Bar pressure rating permanently stamped on the exterior face
• High-temperature silicone sealing gasket for extended service life
• Standard-pressure design optimized for stock liquid-cooled applications
• Durable black anodized outer cap for rust and impact resistance
• Correctly calibrated spring tension for accurate valve engagement
• Universal application across Honda, Kawasaki, Suzuki, and Yamaha platforms
• Pre-assembled valve core ready for bolt-in installation

TECHNICAL SPECIFICATIONS

• Brand: K&S Technologies
• Part Name: Standard-Pressure Radiator Cap
• Alternative Part Numbers: 1903-0009, 58-1001BK
• Pressure Rating: 16 PSI (1.1 Bar)
• Gasket Material: High-temperature silicone
• Finish: Black
• Application Type: Direct Replacement
• Supported Brands: Honda, Kawasaki, Suzuki, Yamaha

FITMENT

• Universal — fits most Honda, Kawasaki, Suzuki, and Yamaha ATV, UTV, motorcycle, and powersports engines as specified.

WHY RIDERS CHOOSE THIS

Motorsport enthusiasts and mechanics trust this cap because it returns faded cooling systems to their factory pressure curves without requiring expensive component swaps. The silicone sealing ring survives harsh dirt tracks and high-RPM highway runs where standard rubber gaskets crack and leak over time. Correct valve calibration prevents catastrophic low-pressure boils and eliminates the guesswork associated with mismatched aftermarket parts. It provides a straightforward, cost-effective solution that keeps liquid-cooled machines reliable mile after mile.