2018 Mack GU5 Diesel Emission Parts

Keep Your 2018 Mack GU5 in Top Shape with Quality Diesel Emission Parts

Whether you’re repairing or upgrading your Diesel Emission Part, using high-quality parts is key to keeping your 2018 Mack GU5 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Diesel Exhaust Fluid (DEF) Filler Neck Filters and Selective Catalytic Reduction (SCR) Wiring. 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.

Competitive Prices and Extensive Inventory

The average price for a 2018 Mack GU5 Diesel Emission Part at Advance Auto Parts is around $121.99, with a range that starts at $67.99 and goes up to $175.99. With 2 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like DEF Tank Filler Neck Filter and WIRING HARNESS start at just $67.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Diesel Emission Part, don’t forget to check out other key components like Diesel Fuel Injectors and Exhaust Gas Recirculation (EGR) Parts. At Advance Auto Parts, we’re here to help you keep your 2018 Mack GU5 in peak condition, inside and out.

Essential 2018 Mack GU5 Diesel Emission Parts

DAYTON PARTS – WIRING HARNESS (Part No.311-0015)

WIRING HARNESS

from

$175.99
WIRING HARNESS

Dorman – HD Solutions – DEF Tank Filler Neck Filter (Part No.904-7938)

DEF Tank Filler Neck Filter

from

$67.99
This diesel exhaust fluid (DEF) filler neck filter is designed to match the fit and function of the original filter on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this diesel exhaust fluid (DEF) filler neck filter is designed to match the fit and function of the original filter on specified vehicles
  • Restores functionality – reliable replacement for an original part that has failed due to clogging
  • 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 Diesel Exhaust Fluid (DEF) Filler Neck Filter for 2018 Mack GU5s

Enhance your 2018 Mack GU5 with this popular Diesel Exhaust Fluid (DEF) Filler Neck Filter we have in stock, for $67.99.

Dorman – HD Solutions – DEF Tank Filler Neck Filter (Part No.904-7938)

DEF Tank Filler Neck Filter

from

$67.99
This diesel exhaust fluid (DEF) filler neck filter is designed to match the fit and function of the original filter on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this diesel exhaust fluid (DEF) filler neck filter is designed to match the fit and function of the original filter on specified vehicles
  • Restores functionality – reliable replacement for an original part that has failed due to clogging
  • 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

Best-Selling 2018 Mack GU5 Selective Catalytic Reduction (SCR) Wiring

Upgrade your GU5 with our best-selling Selective Catalytic Reduction (SCR) Wiring.

DAYTON PARTS – WIRING HARNESS (Part No.311-0015)

WIRING HARNESS

from

$175.99
WIRING HARNESS

FAQs for 2018 Mack GU5 Diesel Emission Parts

What are the best-selling Diesel Emission Parts for 2018 Mack GU5s?

Out of 2 Diesel Emission Parts that fit 2018 Mack GU5s, the following parts are the top sellers:

What’s the price range for 2018 Mack GU5 Diesel Emission Parts?

The prices of Diesel Emission Parts for the 2018 Mack GU5 range from $67.99 up to $175.99 for the most premium parts.

What is the average price of a Diesel Emission Part for a 2018 Mack GU5?

The average price for Diesel Emission Parts for the 2018 Mack GU5 is $121.99. Keep in mind the variety of part types within our Diesel Emission Part category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Diesel Emission Parts for other Mack GU5 model years?

Yes, we carry Diesel Emission Parts for 5 model years of Mack GU5s between 2012 and 2017. The following model years are the most popular for Diesel Emission Part purchases: 2017, 2016, 2015, 2014, 2013, and 2012.

What are the cheapest Diesel Emission Parts for my 2018 Mack GU5?

The cheapest 2018 Mack GU5 Diesel Emission Parts we carry are:

Does Advance Auto Parts sell Diesel Emission Parts for any other 2018 Mack models?

Yes. We stock Diesel Emission Parts for 5 other popular 2018 Mack models. Some of the most popular are 2018 CXU Diesel Emission Parts, 2018 CHU Diesel Emission Parts, 2018 GU7 Diesel Emission Parts, 2018 GU8 Diesel Emission Parts, and 2018 GU4 Diesel Emission Parts.

What types of Diesel Emission Parts do you sell for my 2018 Mack GU5?

As of 11/2/25, these are some of the most in-demand types of Diesel Emission Parts for a 2018 Mack GU5:

Can I get help with 2018 Mack GU5 Diesel Emission Part orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mack Diesel Emission Parts and more.

What is your return policy for Mack GU5 Diesel Emission Parts?

Advance Auto Parts keeps returns simple. For new Mack GU5 Diesel Emission Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.