Best Radiator Drain Valves

Looking for the best radiator drain valves? We’ve got a list of 10 top-rated options that make maintaining your cooling system easy and reliable.

Radiator drain valves are essential for keeping your vehicle’s cooling system in top shape. They help remove old coolant and prevent leaks, ensuring your engine runs smoothly. Choosing the right one can save you time and money.

We’ve tested and reviewed the best radiator drain valves on the market. From durable brass to easy-to-install designs, we’ve got you covered. Whether you’re a DIY enthusiast or a pro, this guide will help you find the perfect fit.

Discover reliable options. Learn what makes each valve stand out. Find the one that suits your needs.

List of Top 10 Radiator Drain Valves

Title	Best For	Price
Dorman 61106 Drain Cock-Brass-1/4 In. NPT Compatible with Select Models	This part is a direct replacement for your car’s drain, so it fits right out of the box. It’s durable and has been quality assured for a perfect fit.	View on Amazon (paid link)
Sellerocity American Made 1/4 Inch NPT Size Universal Compressor Tank Drain Valve Petcock With Directional Orifice For Condensate Release	This American-made valve is perfect for anyone needing a reliable, durable solution for compressor tanks, radiators, or pool equipment. It’s easy to use and built to last, with a 6-month warranty for peace of mind.	View on Amazon (paid link)
Dorman 61109 Radiator Drain Cocks Compatible with Select Models	This direct replacement part is perfect for vehicle owners who need a durable construction and century of experience-backed solution for their radiator systems. Mechanics and DIYers who value ensure fit and quality assured components will find this petcock reliable and easy to install.	View on Amazon (paid link)
GM Genuine Parts 15781370 Radiator Drain Petcock	This part is perfect for GM vehicle owners who want true factory fit and long-lasting reliability. It’s made for drivers who value quality and durability in every detail.	View on Amazon (paid link)
GM Genuine Parts 22887095 Radiator Drain Plug	This GM Genuine Parts Radiator Drain Plug is perfect for car owners who want reliable, high-quality parts for their Chevrolet, Buick, GMC, or Cadillac. It’s designed by GM engineers to fit your vehicle perfectly.	View on Amazon (paid link)
GM Genuine Parts 95018158 Radiator Drain Petcock	Chevrolet, Buick, GMC, and Cadillac owners love this radiator drain petcock. It’s a key part that keeps engines cool.	View on Amazon (paid link)
APDTY 72245 Radiator Drain Cock	This APDTY 72245 Radiator Drain Cock is perfect for anyone needing a reliable replacement for their vehicle’s radiator drain. It’s easy to install and fits perfectly if your vehicle matches the compatibility chart.	View on Amazon (paid link)
GM Genuine Parts 13267636 Radiator Drain Petcock	This part is perfect for drivers who want true GM quality in their Chevrolet, Buick, GMC, or Cadillac. It’s made for anyone who values tested, engineered, and trusted parts that keep their vehicle running strong.	View on Amazon (paid link)
Dorman 61110 Radiator Drain Cocks Compatible with Select Models	This Dorman 61110 Radiator Drain Cock is perfect for car owners who want a reliable replacement part. It’s easy to install and built to last, making it ideal for anyone looking to keep their vehicle running smoothly.	View on Amazon (paid link)
Rexka 5pcs M14-20 Radiator Drain Plug Cock Petcock for Toyota Honda Suzuki Mazda Mitsubishi GM Isuzu Subaru	This Rexka Radiator Drain Plug is perfect for car owners who need a reliable replacement for their Toyota, Honda, Suzuki, Mazda, Mitsubishi, GM, Isuzu, or Subaru. It’s easy to install and fits many popular models.	View on Amazon (paid link)

Detailed Reviews

Discover the top 10 Radiator Drain Valves in our expert-picked guide. Each product is thoroughly reviewed for quality, performance, and value. Find the perfect fit for your needs and keep your vehicle running smoothly.

1. Dorman 61106 Drain Cock-Brass-1/4 In. NPT Compatible with Select Models

Strong fit. Easy use. Long life.

This drain cock is a direct replacement for your radiator part. It has durable construction built to last.

With over 100 years of experience, Dorman makes trusted parts. Each piece is quality assured for proper fit.

Pros	Cons
Direct replacement for perfect fit every time Built to last with tough brass construction Backed by 100 years of trusted expertise Tested quality ensures reliable performance Easy fit check with garage tool confirmation	Not universal – only works with specific vehicle models. Small size – easy to lose during installation or removal. Manual verification – requires extra steps to confirm fit.

Perfect For:

This part is a direct replacement for your car’s drain, so it fits right out of the box. It’s durable and has been quality assured for a perfect fit.

Ready to Purchase?

View Price on Amazon (paid link)

Best Screw In Drain Cocks for Perfect Fit and Easy Plumbing

2. Sellerocity American Made 1/4 Inch NPT Size Universal Compressor Tank Drain Valve Petcock With Directional Orifice For Condensate Release

The Sellerocity American Made Compressor Tank Drain Valve is a reliable and versatile solution for managing condensate release. It’s perfect for compressor tanks, radiators, and pool equipment.

This valve is built tough with a brass body and stem, metal seats, and a nickel-plated steel handle. It handles up to 300 PSI and works in temperatures from -65°F to 250°F.

Enjoy peace of mind with a 6-month warranty. The 1/4 NPT thread fits easily, and the directional orifice ensures efficient drainage.

Pros	Cons
Made in USA for trusted quality Handles 300 PSI with ease Strong brass body built to last Easy T-handle for quick use Backed by 6-month warranty peace of mind	Not stainless steel — may corrode faster in damp spots Short warranty — only 6 months of coverage Manual operation — no auto-drain feature included

Perfect For:

This American-made valve is perfect for anyone needing a reliable, durable solution for compressor tanks, radiators, or pool equipment. It’s easy to use and built to last, with a 6-month warranty for peace of mind.

Ready to Purchase?

View Price on Amazon (paid link)

3. Dorman 61109 Radiator Drain Cocks Compatible with Select Models

The Dorman 61109 Radiator Drain Cocks is a direct replacement for your vehicle’s original part. It fits and works just like the factory version. Made with quality materials, it’s built to last a long time.

This part comes from Dorman Products, a trusted name with over 100 years of experience. It’s tested to ensure it fits and works perfectly. Check your vehicle’s fit using the garage tool for peace of mind.

Pros	Cons
Direct fit for select models, no hassle installation. Built to last with quality materials for long life. Trusted brand with over 100 years of automotive expertise. Verified fit ensures perfect compatibility with your vehicle.	Fit check required — may not match every vehicle. Extra verification needed — can be tricky for some models.

Perfect For:

This direct replacement part is perfect for vehicle owners who need a durable construction and century of experience-backed solution for their radiator systems. Mechanics and DIYers who value ensure fit and quality assured components will find this petcock reliable and easy to install.

Ready to Purchase?

View Price on Amazon (paid link)

4. GM Genuine Parts 15781370 Radiator Drain Petcock

The GM Genuine Parts 15781370 Radiator Drain Petcock is a reliable replacement for your GM vehicle. It’s designed to match the original factory part perfectly.

This part is made to GM’s high standards, ensuring quality and durability. It fits, works, and lasts just like the original equipment.

Manufactured in Brazil, this petcock is built to perform. Trust it to keep your radiator working smoothly.

Pros	Cons
GM-recommended part for perfect fit and function. Quality and durability like the original factory component. Manufactured to GM’s high standards for reliability. Easy installation with no modifications needed.	Not a universal part, only fits specific GM models. Made in Brazil, not in the USA. No extra features, just a basic replacement part.

Perfect For:

This part is perfect for GM vehicle owners who want true factory fit and long-lasting reliability. It’s made for drivers who value quality and durability in every detail.

Ready to Purchase?

View Price on Amazon (paid link)

5. GM Genuine Parts 22887095 Radiator Drain Plug

This radiator drain plug is made for GM vehicles. It fits with precision. It works with strength.

It is engineered and tested by GM. It is backed by General Motors.

It keeps your car running right. It uses updated designs. It gives you trusted quality.

Pros	Cons
GM Genuine Parts ensure perfect fit for your vehicle. Engineered and tested to rigorous standards by GM. Regular updates integrate new materials and technologies. Backed by General Motors for reliable performance.	Price: can be higher than aftermarket options. Compatibility: only fits specific GM models. Availability: sometimes hard to find in local stores.

Perfect For:

This GM Genuine Parts Radiator Drain Plug is perfect for car owners who want reliable, high-quality parts for their Chevrolet, Buick, GMC, or Cadillac. It’s designed by GM engineers to fit your vehicle perfectly.

Ready to Purchase?

View Price on Amazon (paid link)

6. GM Genuine Parts 95018158 Radiator Drain Petcock

The GM Genuine Parts 95018158 Radiator Drain Petcock is a reliable replacement part. It’s designed for your GM vehicle. This part helps keep your car’s cooling system working well.

GM Engineers create these parts to fit your Chevrolet, Buick, GMC, or Cadillac. They use updated materials and technologies for better performance.

This petcock is tested to meet high standards. It’s backed by General Motors, so you can trust its quality.

Pros	Cons
Trusted by General Motors for quality Engineered to meet strict OE standards Validated by GM experts for your vehicle Updated with new materials and tech	Not universal fit for non-GM vehicles Limited availability outside GM dealer network Higher price than generic alternatives

Perfect For:

Chevrolet, Buick, GMC, and Cadillac owners love this radiator drain petcock. It’s a key part that keeps engines cool.

Ready to Purchase?

View Price on Amazon (paid link)

7. APDTY 72245 Radiator Drain Cock

The APDTY 72245 Radiator Drain Cock is built for reliability. It’s a brand new part designed to keep your vehicle running smooth.

It gives an exact fit when matched to the compatibility chart. Installation is quick. Performance stays strong.

It also replaces 4592122, 4644269, 4762890. That means less hassle. That means more confidence. That means peace of mind.

Pros	Cons
Brand new and ready to install for your vehicle. Exact fit guaranteed when matched to your vehicle. Replaces multiple parts, saving you time and money. Easy to use and durable for long-lasting performance.	Not universal fit — must check chart before buying Limited replacements — only swaps specific part numbers Small part — easy to misplace during install

Perfect For:

This APDTY 72245 Radiator Drain Cock is perfect for anyone needing a reliable replacement for their vehicle’s radiator drain. It’s easy to install and fits perfectly if your vehicle matches the compatibility chart.

Ready to Purchase?

View Price on Amazon (paid link)

8. GM Genuine Parts 13267636 Radiator Drain Petcock

The GM Genuine Parts 13267636 Radiator Drain Petcock is a reliable replacement part for your vehicle. It’s designed by GM engineers to fit perfectly. This part meets strict quality standards for performance.

It may have been called ACDelco GM Original Equipment (OE) before. GM updates designs to use new materials and tech, ensuring it works great for your Chevrolet, Buick, GMC, or Cadillac.

Pros	Cons
Trusted brand guarantees quality parts. Engineered for GM fits your car perfectly. Durable design resists leaks and wear. Easy install keeps you on the road quick. Guaranteed fit works on most GM models.	Limited to GM vehicles, not universal. No DIY-friendly features, requires tools. Higher cost than aftermarket options.

Perfect For:

This part is perfect for drivers who want true GM quality in their Chevrolet, Buick, GMC, or Cadillac. It’s made for anyone who values tested, engineered, and trusted parts that keep their vehicle running strong.

Ready to Purchase?

View Price on Amazon (paid link)

9. Dorman 61110 Radiator Drain Cocks Compatible with Select Models

The Dorman 61110 Radiator Drain Cock is built as a direct replacement. It matches the fit and function of the original part. That means easy installation and reliable performance.

Made with durable materials, it is designed for a long service life. Backed by over a century of experience, Dorman delivers trusted quality. Each part is tested virtually to ensure proper fit and function.

To be sure it fits, use the garage tool and check the Confirmed Fit bar. Always verify the notes before buying.

Pros	Cons
Direct replacement for perfect fit every time Durable build ensures long-lasting performance Backed by 100+ years of trusted expertise Quality tested for reliable function Easy fit check with garage tool confirmation	Fit check needed — may not match all vehicles Extra verification can slow down quick installs

Perfect For:

This Dorman 61110 Radiator Drain Cock is perfect for car owners who want a reliable replacement part. It’s easy to install and built to last, making it ideal for anyone looking to keep their vehicle running smoothly.

Ready to Purchase?

View Price on Amazon (paid link)

10. Rexka 5pcs M14-20 Radiator Drain Plug Cock Petcock for Toyota Honda Suzuki Mazda Mitsubishi GM Isuzu Subaru

The Rexka 5pcs M14-20 Radiator Drain Plug is a must-have for car owners. It fits many popular car models.

This drain plug has a thread size of M14-20 and an overall length of 39.5mm. It is compatible with Honda, Toyota, and Subaru. It also fits Lexus, Mazda, and Mitsubishi.

You can use it for radiator maintenance. Always check the size before buying. It is a reliable and affordable solution.

Pros	Cons
Universal fit for many car brands Durable build for long-lasting use Easy install with precise thread size Reliable performance to prevent leaks Great value with 5 pieces included	Not a universal fit, check size before buying. Limited to specific models, may not match yours. No extra parts included, basic package only.

Perfect For:

This Rexka Radiator Drain Plug is perfect for car owners who need a reliable replacement for their Toyota, Honda, Suzuki, Mazda, Mitsubishi, GM, Isuzu, or Subaru. It’s easy to install and fits many popular models.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

A radiator drain valve keeps your cooling system healthy. It makes draining old coolant simple. It saves you from costly leaks.

Here’s what to look for before buying:

Material Quality: Choose brass or high-grade plastic. Brass lasts longer and resists wear. Plastic is lighter and often cheaper.
Fit and Compatibility: Always check the thread size and vehicle model. A perfect fit means no leaks. Use the garage tool or compatibility chart.
Ease of Installation: Look for direct replacement designs. Quick installation saves time. No need for special tools.
Durability: Strong valves handle pressure and heat. Pick one tested for long service life. This ensures reliable performance.
Pressure and Temperature Range: Some valves handle up to 300 PSI and wide temperature swings. This matters if your system runs hot or under heavy load.
Warranty and Support: A warranty adds peace of mind. It shows the maker trusts their product.
Versatility: Some valves work with radiators, compressor tanks, and pool equipment. Multi-use designs give extra value.
Brand Reputation: Trusted names like Dorman and GM Genuine Parts have proven quality. Long-standing brands mean tested reliability.
Cost vs. Value: Don’t just pick the cheapest. A valve that lasts longer saves money. Balance price with durability.
Pack Options: Multi-piece sets like Rexka 5pcs are smart for owners of multiple vehicles. Extra spares mean less hassle later.