Men's Clothing

The Best Automotive Replacement Engine Radiator Drain Cocks

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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.

No. 1
Dorman 61106 Drain Cock-Brass-1/4 in. NPT
  • 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
No. 2
Dorman 61109 Radiator Drain Cocks
  • 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
No. 3
APDTY 72245 Radiator Drain Cock
  • Brand New Radiator Drain Cock
  • Compatible With Select 1993-2010 Chrysler, Dodge, Eagle, Jeep, and Plymouth Vehicles
  • Match Vehicle To Compatibility Chart To Ensure Exact Fitment
  • Replaces 15781370, 19129818, 22985584, 4592122, 4644269, 4758290, 4762890, 5137720AA, 52028466, 52028466AB, 68053748AA, DG9Z8115A
No. 4
Milton S-614-2 1/8" Compressor Tank Drain Cock - Pack of 2
  • Replacement part for damaged drain cocks on compressor tanks
  • Turn handle to drain water, close drain cock when water is drained
  • 1/8" male national pipe thread
  • Made in USA
No. 5
GM Genuine Parts 95018599 Radiator Drain Cock
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
No. 6
GM Genuine Parts 22790134 Radiator Drain Petcock
  • Country of Origin : United States
  • The Package Height of the Product is 0.8 inches
  • The Package Length of the Product is 2.2 inches
  • The Package Width of the Product is 1.5 inches
No. 7
GM Genuine Parts 22887095 Radiator Drain Plug
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
No. 8
X AUTOHAUX 4644269 2pcs Radiator Drain Plug for Chrysler 300 2000-2023
  • OE Number:4644269.
  • [Fitment] for Chrysler 300 2000-2023, for Chrysler Cirrus 1997-2000, for Chrysler Concorde 1997 2000-2004, for Chrysler Grand Voyager 2000, for Chrysler Lhs 1997-2001, for Chrysler Pt Cruiser 2001- 2010, for Chrysler Sebring 1997-2006, for Chrysler Town...
  • [Material] Quality plastic, sturdy and durable. Original size, exact match, direct replacement use.
  • [Function] Radiator Drain Plug is used to securely fix your existing radiators to the floor or wall. Don't forget, when selecting your radiator brackets, it's important to ensure they will be for your current radiator.
No. 9
APDTY 160962 Radiator Drain Cock Screw-In Type With Washer
  • Brand New Radiator Drain Cock Screw-In Type With Washer
  • Match Vehicle To Compatibility Chart To Ensure Exact Fitment
  • Replaces 0005000185, 05140661AA, 17112247346, 7L1Z8115A

Last update on 2026-10-16 / 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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