14 PSI Polished Aluminum Radiator Cap

• 6-grip cap seals the radiator neck and regulates cooling system pressure

• Polished aluminum finish gives the radiator area a clean, billet-style look

• Universal fit based on neck diameter and reach, not vehicle make or model

• 14 PSI rating — verify this matches your cooling system's rated pressure

This polished aluminum radiator cap seals the radiator neck and helps maintain proper cooling system pressure at a 14 PSI rating. The 6-grip design gives a secure hold for installation and removal, while the polished finish adds a clean, billet-style appearance to the radiator area.

This is a universal-fit cap — fitment depends on matching your radiator neck's diameter and reach to this cap's dimensions, not just matching pressure rating or vehicle make. Some aftermarket and performance radiators use a different neck diameter or reach than factory necks and won't accept this cap even if the pressure rating matches. Confirm your cooling system's rated pressure matches 14 PSI as well before ordering.

Neck and Pressure Compatibility
Fits standard-size radiator necks common to many classic and performance applications, including both press-in and threaded neck styles. Confirm your radiator neck's diameter and reach match this cap's dimensions, and that 14 PSI matches your cooling system's rated pressure, before ordering.

Installation
The 6-grip surface provides hold for hand installation and removal without tools. Seat the cap fully to ensure a proper seal — an improperly seated cap can affect system pressure even if the diameter, reach, and PSI rating are all correct for your application.

What pressure rating is this cap?
14 PSI.

Why might this cap not fit my radiator even though it's rated for my vehicle?
Radiator cap fit depends on neck diameter and reach (depth), not just pressure rating or vehicle make — some aftermarket radiators use a different neck size than factory necks. Measure your radiator's neck diameter and depth before ordering if you have a non-stock radiator.

Will this fit my specific vehicle?
This is a universal-fit cap — fitment depends on matching your radiator neck's diameter and reach, not on vehicle make or model. It's commonly used across classic Chevy, Ford, and Mopar applications with standard-size necks.

What happens if I use a cap with the wrong pressure rating?
A cap rated lower than your system's specification can allow coolant to boil and escape sooner than intended; a cap rated higher can put excess pressure on cooling system components. Match the cap rating to your system's requirement.

What's the difference between this cap and TSP's 16 PSI knurled radiator cap?
This cap is rated 14 PSI with a 6-grip design; TSP's other listing is rated 16 PSI with a knurled grip. Choose based on your cooling system's required pressure rating and grip style preference.