1999 Mercury Mountaineer Freeze and Expansion Plugs

Keep Your 1999 Mercury Mountaineer in Top Shape with Quality Freeze and Expansion Plugs

Whether you’re repairing or upgrading your Freeze and Expansion Plug, using high-quality parts is key to keeping your 1999 Mercury Mountaineer looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Expansion Plug – Pipes, Rubber Freeze Plugs, and Expansion Plugs. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Freeze and Expansion Plugs from Trusted Brands

Looking for a reliable Freeze and Expansion Plug? We’ve got you covered with options from brands you know and trust like Dorman. For example, Dorman Freeze and Expansion Plugs start at just $1.29 with an average 4.2 star rating. With over 14 reviews and a solid 5 star average, you can shop with confidence knowing other Mercury Mountaineer owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1999 Mercury Mountaineer Freeze and Expansion Plug at Advance Auto Parts is around $7.02, with a range that starts at $1.29 and goes up to $29.99. With 13 options in stock from one trusted brand, finding the right fit is easy. Popular picks like Rubber Expansion Plug 1-1/2 In. – Size Range 1-1/2 In. – 1-5/8 In. (Sold by each), Steel Cup Expansion Plug 3/4 In., Height 0.250 (sold by each), and Steel Cup Expansion Plug 1-1/2 In., Height 0.220 (sold by each) start at just $1.79 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Freeze and Expansion Plug, don’t forget to check out other key components like Engine Gaskets and Seals and Engine Timing Parts. At Advance Auto Parts, we’re here to help you keep your 1999 Mercury Mountaineer in peak condition, inside and out.

Essential 1999 Mercury Mountaineer Freeze and Expansion Plugs

Dorman – Brass Expansion Plug Kit, 10 Expansion Plugs, 4 Pipe Plugs (Part No.02663)

Brass Expansion Plug Kit, 10 Expansion Plugs, 4 Pipe Plugs

from

$29.99
We offer a comprehensive line of Engine Expansion Plug Kits to cover a range of applications. The kits include all parts necessary for a complete repair.

Product Features:
  • Direct replacement – the components in this engine expansion plug kit are designed to match the original plugs on specified years, makes and models
  • Ideal solution – this kit is a reliable replacement for original plugs that have failed due to wear
  • Durable construction – this kit is made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Pipe Plug-Square Head-1/4 In. MNPT (Part No.490-071.1)

Pipe Plug-Square Head-1/4 In. MNPT

from

$3.99
This pipe plug matches the original equipment plug for diameter, thread pitch and head type to ensure a reliable repair. Made of corrosion-resistant material, it has been engineered for leak-free performance and a long service life.

Product Features:
  • Ideal replacement – this pipe plug matches the diameter, thread pitch and head type of the original equipment part
  • Durable construction – this plug is made of quality materials for dependable service
  • Leak-free performance – quality manufacturing process ensures a tight for reliable sealing
  • Quality tested – this plug has undergone validation testing to ensure proper fit and function for this vehicle’s application
See More

Dorman – Brass Pipe Plug – Square Head – 1/4 In. MNPT (Part No.785-071D)

Brass Pipe Plug - Square Head - 1/4 In. MNPT

from

$5.49
This pipe plug matches the original equipment plug for diameter, thread pitch and head type to ensure a reliable repair. Made of corrosion-resistant material, it has been engineered for leak-free performance and a long service life.

Product Features:
  • Ideal replacement – this pipe plug matches the diameter, thread pitch and head type of the original equipment part
  • Durable construction – this plug is made of quality materials for dependable service
  • Leak-free performance – quality manufacturing process ensures a tight for reliable sealing
  • Quality tested – this plug has undergone validation testing to ensure proper fit and function for this vehicle’s application
See More

Dorman – Pipe Plug-Square Head-1/4 In. MNPT (Part No.785-071)

Pipe Plug-Square Head-1/4 In. MNPT

from

$2.99
This pipe plug matches the original equipment plug for diameter, thread pitch and head type to ensure a reliable repair. Made of corrosion-resistant material, it has been engineered for leak-free performance and a long service life.

Product Features:
  • Ideal replacement – this pipe plug matches the diameter, thread pitch and head type of the original equipment part
  • Durable construction – this plug is made of quality materials for dependable service
  • Leak-free performance – quality manufacturing process ensures a tight for reliable sealing
  • Quality tested – this plug has undergone validation testing to ensure proper fit and function for this vehicle’s application
See More

Dorman – Rubber Expansion Plug 1-1/2 In. – Size Range 1-1/2 In. – 1-5/8 In. (Sold by each) (Part No.570-009)

Rubber Expansion Plug 1-1/2 In. - Size Range 1-1/2 In. - 1-5/8 In. (Sold by each)

from

$14.99
This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Rubber Expansion Plug 3/4 In. – Size Range 3/4 In. – 7/8 In. (Part No.02608)

Rubber Expansion Plug 3/4 In. - Size Range 3/4 In. - 7/8 In.

from

$11.49
Our uniquely designed pilot seal expansion plugs ensure a leak-proof fit.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Ford Brass Expansion Plug Kit, 15 Expansion Plugs, 4 Pipe Plugs (Part No.567-009)

Ford Brass Expansion Plug Kit, 15 Expansion Plugs, 4 Pipe Plugs

from

$18.99
The plugs in this engine expansion plug kit are designed to match the original parts on specified vehicles. Made of quality materials, this kit components are engineered for reliable performance and durability.

Product Features:
  • Direct replacement – the components in this engine expansion plug kit are designed to match the original plugs on specified years, makes and models
  • Ideal solution – this kit is a reliable replacement for original plugs that have failed due to wear
  • Durable construction – this kit is made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Steel Cup Expansion Plug 1-1/2 In., Height 0.220 (sold by each) (Part No.555-077)

Steel Cup Expansion Plug 1-1/2 In., Height 0.220 (sold by each)

from

$2.99
This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Steel Cup Expansion Plug 1-9/16 In., Height 0.380 (Sold by each) (Part No.555-029)

Steel Cup Expansion Plug 1-9/16 In., Height 0.380 (Sold by each)

from

$2.79
This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Steel Cup Expansion Plug 3/4 In., Height 0.250 (sold by each) (Part No.555-012)

Steel Cup Expansion Plug 3/4 In., Height 0.250 (sold by each)

from

$1.79
This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Pik-a-Nut – Steel Cup Expansion Plug 1-1/2 In., Height 0.220 (Part No.362652.1)

Steel Cup Expansion Plug 1-1/2 In., Height 0.220

from

$1.29
This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Pik-a-Nut – Steel Cup Expansion Plug 1-9/16 In., Height 0.380 (Part No.362518.1)

Steel Cup Expansion Plug 1-9/16 In., Height 0.380

from

$3.99
This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Steel Cup Expansion Plug 1-1/2 In., Height 0.220 (Part No.555-077.1)

Steel Cup Expansion Plug 1-1/2 In., Height 0.220

from

$2.29
This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Most Popular Expansion Plug – Pipes for 1999 Mercury Mountaineers

Enhance your 1999 Mercury Mountaineer with one of the 3 Expansion Plug – Pipes we have in stock, starting at just $2.99.

Dorman – Brass Pipe Plug – Square Head – 1/4 In. MNPT (Part No.785-071D)

Brass Pipe Plug - Square Head - 1/4 In. MNPT

from

$5.49
This pipe plug matches the original equipment plug for diameter, thread pitch and head type to ensure a reliable repair. Made of corrosion-resistant material, it has been engineered for leak-free performance and a long service life.

Product Features:
  • Ideal replacement – this pipe plug matches the diameter, thread pitch and head type of the original equipment part
  • Durable construction – this plug is made of quality materials for dependable service
  • Leak-free performance – quality manufacturing process ensures a tight for reliable sealing
  • Quality tested – this plug has undergone validation testing to ensure proper fit and function for this vehicle’s application
See More

Dorman – Pipe Plug-Square Head-1/4 In. MNPT (Part No.490-071.1)

Pipe Plug-Square Head-1/4 In. MNPT

from

$3.99
This pipe plug matches the original equipment plug for diameter, thread pitch and head type to ensure a reliable repair. Made of corrosion-resistant material, it has been engineered for leak-free performance and a long service life.

Product Features:
  • Ideal replacement – this pipe plug matches the diameter, thread pitch and head type of the original equipment part
  • Durable construction – this plug is made of quality materials for dependable service
  • Leak-free performance – quality manufacturing process ensures a tight for reliable sealing
  • Quality tested – this plug has undergone validation testing to ensure proper fit and function for this vehicle’s application
See More

Dorman – Pipe Plug-Square Head-1/4 In. MNPT (Part No.785-071)

Pipe Plug-Square Head-1/4 In. MNPT

from

$2.99
This pipe plug matches the original equipment plug for diameter, thread pitch and head type to ensure a reliable repair. Made of corrosion-resistant material, it has been engineered for leak-free performance and a long service life.

Product Features:
  • Ideal replacement – this pipe plug matches the diameter, thread pitch and head type of the original equipment part
  • Durable construction – this plug is made of quality materials for dependable service
  • Leak-free performance – quality manufacturing process ensures a tight for reliable sealing
  • Quality tested – this plug has undergone validation testing to ensure proper fit and function for this vehicle’s application
See More

Best-Selling 1999 Mercury Mountaineer Rubber Freeze Plugs

Upgrade your Mountaineer with one of our 2 best-selling Rubber Freeze Plugs, earning an average 5 stars rating across 5 reviews.

Dorman – Rubber Expansion Plug 3/4 In. – Size Range 3/4 In. – 7/8 In. (Part No.02608)

Rubber Expansion Plug 3/4 In. - Size Range 3/4 In. - 7/8 In.

from

$11.49
Our uniquely designed pilot seal expansion plugs ensure a leak-proof fit.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Rubber Expansion Plug 1-1/2 In. – Size Range 1-1/2 In. – 1-5/8 In. (Sold by each) (Part No.570-009)

Rubber Expansion Plug 1-1/2 In. - Size Range 1-1/2 In. - 1-5/8 In. (Sold by each)

from

$14.99
This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Top-Quality Expansion Plugs for 1999 Mercury Mountaineers

Choose a high-quality OEM or aftermarket Expansion Plug for Mercury Mountaineers and enjoy top-notch performance from $1.29.

Dorman – Pik-a-Nut – Steel Cup Expansion Plug 1-1/2 In., Height 0.220 (Part No.362652.1)

Steel Cup Expansion Plug 1-1/2 In., Height 0.220

from

$1.29
This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Pik-a-Nut – Steel Cup Expansion Plug 1-9/16 In., Height 0.380 (Part No.362518.1)

Steel Cup Expansion Plug 1-9/16 In., Height 0.380

from

$3.99
This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Ford Brass Expansion Plug Kit, 15 Expansion Plugs, 4 Pipe Plugs (Part No.567-009)

Ford Brass Expansion Plug Kit, 15 Expansion Plugs, 4 Pipe Plugs

from

$18.99
The plugs in this engine expansion plug kit are designed to match the original parts on specified vehicles. Made of quality materials, this kit components are engineered for reliable performance and durability.

Product Features:
  • Direct replacement – the components in this engine expansion plug kit are designed to match the original plugs on specified years, makes and models
  • Ideal solution – this kit is a reliable replacement for original plugs that have failed due to wear
  • Durable construction – this kit is made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Steel Cup Expansion Plug 3/4 In., Height 0.250 (sold by each) (Part No.555-012)

Steel Cup Expansion Plug 3/4 In., Height 0.250 (sold by each)

from

$1.79
This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Steel Cup Expansion Plug 1-1/2 In., Height 0.220 (sold by each) (Part No.555-077)

Steel Cup Expansion Plug 1-1/2 In., Height 0.220 (sold by each)

from

$2.99
This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Steel Cup Expansion Plug 1-1/2 In., Height 0.220 (Part No.555-077.1)

Steel Cup Expansion Plug 1-1/2 In., Height 0.220

from

$2.29
This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – Steel Cup Expansion Plug 1-9/16 In., Height 0.380 (Sold by each) (Part No.555-029)

Steel Cup Expansion Plug 1-9/16 In., Height 0.380 (Sold by each)

from

$2.79
This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Our Top Pick for a 1999 Mercury Mountaineer Freeze Plug – Block Kit

Invest in a durable Freeze Plug – Block Kit for your 1999 Mercury, knowing you’re getting trusted brands and expert craftsmanship.

Dorman – Brass Expansion Plug Kit, 10 Expansion Plugs, 4 Pipe Plugs (Part No.02663)

Brass Expansion Plug Kit, 10 Expansion Plugs, 4 Pipe Plugs

from

$29.99
We offer a comprehensive line of Engine Expansion Plug Kits to cover a range of applications. The kits include all parts necessary for a complete repair.

Product Features:
  • Direct replacement – the components in this engine expansion plug kit are designed to match the original plugs on specified years, makes and models
  • Ideal solution – this kit is a reliable replacement for original plugs that have failed due to wear
  • Durable construction – this kit is made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Top-Rated Freeze and Expansion Plug Brands For Your 1999 Mercury Mountaineer

When it comes to finding the perfect Freeze and Expansion Plug for your 1999 Mercury Mountaineer, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 1 trusted brands. We carry the most popular Freeze and Expansion Plug brands including Dorman, and more, all known for their exceptional customer ratings (average brand rating of 4.2 stars) and competitive prices, as low as $1.29. Purchasing a Freeze and Expansion Plug from us here at Advance Auto Parts is a smart move for both you and your 1999 Mercury Mountaineer, providing peace of mind with parts that meet or exceed OEM standards.

Popular Dorman 1999 Mercury Mountaineer Freeze and Expansion Plugs

If you’re looking for a top-quality Freeze and Expansion Plug for your 1999 Mercury Mountaineer, Advance Auto Parts has exactly what you need with our selection of Dorman Freeze and Expansion Plugs. We have 3 Dorman Freeze and Expansion Plugs in stock for this fitment, all known for their durability and precision fit. With prices starting at just $1.29 and an average cost of $5.59, you’ll find the perfect Freeze and Expansion Plug for your needs and budget. Dorman Freeze and Expansion Plugs for the 1999 Mercury Mountaineer come highly rated, with over 9 customer reviews and an impressive average rating of 4.2 stars. Choosing a Dorman Freeze and Expansion Plug from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Rubber Expansion Plug 3/4 In. - Size Range 3/4 In. - 7/8 In.
from $11.49
(5)
Rubber Expansion Plug 3/4 In. – Size Range 3/4 In. – 7/8 In.
“Vandals / thieves drilled a hole in my fuel tank and stole my fuel. This was a temporary fix and did the job so I could get the truck to have the tank”
Steel Cup Expansion Plug 1-1/2 In., Height 0.220
from $1.29
(3)
Steel Cup Expansion Plug 1-1/2 In., Height 0.220
“worked out great. no problems”
Steel Cup Expansion Plug 1-9/16 In., Height 0.380
from $3.99
(1)
Steel Cup Expansion Plug 1-9/16 In., Height 0.380
“great replacement plug”

FAQs for 1999 Mercury Mountaineer Freeze and Expansion Plugs

What are the best-selling Freeze and Expansion Plugs for 1999 Mercury Mountaineers?

Out of 13 Freeze and Expansion Plugs that fit 1999 Mercury Mountaineers, the following parts are the top sellers:

What’s the price range for 1999 Mercury Mountaineer Freeze and Expansion Plugs?

The prices of Freeze and Expansion Plugs for the 1999 Mercury Mountaineer range from $1.29 up to $29.99 for the most premium parts.

What is the average price of a Freeze and Expansion Plug for a 1999 Mercury Mountaineer?

The average price for Freeze and Expansion Plugs for the 1999 Mercury Mountaineer is $7.02. Keep in mind the variety of part types within our Freeze and Expansion Plug category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Freeze and Expansion Plugs for other Mercury Mountaineer model years?

Yes, we carry Freeze and Expansion Plugs for 7 model years of Mercury Mountaineers between 1997 and 2005. The following model years are the most popular for Freeze and Expansion Plug purchases: 2005, 2004, 2003, 2002, 2001, 2000, 1998, and 1997.

What are the cheapest Freeze and Expansion Plugs for my 1999 Mercury Mountaineer?

Does Advance Auto Parts sell Freeze and Expansion Plugs for any other 1999 Mercury models?

What are the top-rated Freeze and Expansion Plugs that fit the 1999 Mercury Mountaineer?

Based on 14 reviews by customers, our 1999 Mercury Mountaineer Freeze and Expansion Plugs have an average customer rating of 5 stars. These are the highest-rated categories of Freeze and Expansion Plugs for the 1999 Mercury Mountaineer and their top-rated products:

What types of Freeze and Expansion Plugs do you sell for my 1999 Mercury Mountaineer?

As of 11/2/25, these are some of the most in-demand types of Freeze and Expansion Plugs for a 1999 Mercury Mountaineer:

Can I get help with 1999 Mercury Mountaineer Freeze and Expansion Plug orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mercury Freeze and Expansion Plugs and more.

What is your return policy for Mercury Mountaineer Freeze and Expansion Plugs?

Advance Auto Parts keeps returns simple. For new Mercury Mountaineer Freeze and Expansion Plugs and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.