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Maintaining your vehicle's cooling system is crucial for preventing overheating and engine damage. The radiator drain cock, though small, plays a vital role in facilitating coolant flushes and replacements. Selecting a durable and compatible drain cock ensures efficient system maintenance and longevity.
Direct replacement - this radiator drain petcock matches the fit and function of the original equipment part
Durable construction - this part is made of quality materials for a long service life
100 years of experience - Dorman Products has crafted top-tier automotive replacement parts for over a century
Quality assured - this petcock has undergone virtual testing to assure proper fit and function
Ensure fit - Input your vehicle into the garage tool and check Confirmed Fit bar at the top of the page. If there is an “i” in a blue circle, additional verification is needed. Please hover over the "i" to verify fitment notes match your vehicle
Direct replacement - this radiator drain petcock matches the fit and function of the original equipment part
Durable construction - this part is made of quality materials for a long service life
Century of experience - for over 100 years, Dorman Products has provided quality automotive replacement parts to its customers
Quality assured - this petcock has undergone virtual testing to assure proper fit and function
Ensure fit - Input your vehicle into the garage tool and check Confirmed Fit bar at the top of the page. If there is an “i” in a blue circle, additional verification is needed. Please hover over the "i" to verify fitment notes match your vehicle.
Compatible with Ford 1999-2007 Duty7.3L/6.0LPowerstrokeRadiator Petcock Drain Plug
Durable construction - this part is made of quality materials for a long service life
OE:FOAZ-8115-A
Material: Clip is made of Plastic, which can withstand regular use and resist wear and tear, providing performance.
Easy Installation: Simple design, even the average car owner can easily complete the replacement, no need for specialized skills or special tools, saving time and energy
Direct replacement - this radiator drain petcock matches the fit and function of the original equipment part
Durable construction - this part is made of quality materials for a long service life
Century of experience - for over 100 years, Dorman Products has provided quality automotive replacement parts to its customers
Quality assured - this petcock has undergone virtual testing to assure proper fit and function
Ensure fit - Input your vehicle into the garage tool and check Confirmed Fit bar at the top of the page. If there is an “i” in a blue circle, additional verification is needed. Please hover over the "i" to verify fitment notes match your vehicle.
Last update on 2026-09-01 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Automotive Replacement Engine Radiator Drain Cocks
When to Replace Your Drain Cock
Signs that your drain cock needs replacement include leaks around the valve, difficulty in opening or closing it, or visible corrosion or damage to the material. If the existing drain cock is plastic and has become brittle or cracked, it's a clear indicator for replacement. A seized drain cock can impede essential cooling system maintenance, making prompt replacement necessary.
Frequently Asked Questions
What is a radiator drain cock?
A radiator drain cock, or petcock, is a small valve at the bottom of your car's radiator. It allows you to easily drain the coolant from the system for maintenance.
What materials are radiator drain cocks made from?
They are commonly made from brass, which offers good durability and corrosion resistance. Plastic and aluminum are also used, with plastic being lighter and often more affordable.
How do I know if my drain cock needs replacing?
Signs include leaks around the valve, difficulty operating it, or visible damage like cracks or heavy corrosion. If it's stuck or won't seal properly, it's time for a new one.
How do I install a new radiator drain cock?
Ensure the engine is cool, then unscrew the old one. Clean the port and screw in the new drain cock, ensuring it's snug to prevent leaks. Using thread sealant can help create a better seal.
Does the type of handle matter?
The handle type, whether a lever, wingnut, or screw, primarily affects ease of operation. A lever or wingnut can be easier to turn, especially if the cock is difficult to loosen, but all functional types will seal the radiator effectively.
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