2018 Kenworth T400 Fuel and Emissions Systems

Essential Fuel and Emissions Systems for 2018 Kenworth T400s

Carquest Premium – Diesel Exhaust Fluid Filter for SCR Systems (Part No.96679)

Diesel Exhaust Fluid Filter for SCR Systems

from

$108.99
Carquest Premium Diesel Exhaust Fluid (DEF) Filters help reduce harmful emissions and improve air quality. DEF filters remove impurities such as dirt, debris, and particulates from the diesel exhaust fluid before entering your vehicle’s emission control system. These filters allow clean fluid to break down harmful nitrogen oxide (NOx) gases produced during diesel combustion. By ensuring proper DEF flow and helping protect system components, DEF filters help diesel engines meet strict emission standards. Carquest Premium Diesel Exhaust Fluid (DEF) Filters are designed to meet or exceed the performance requirements of the Original Equipment Manufacturer (OEM).

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Contains Plug and Filter Removal Tool
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Dorman – HD Solutions – Exhaust Gas Recirculation Temperature Sensor (Part No.904-7118)

Exhaust Gas Recirculation Temperature Sensor

from

$116.99
This exhaust gas recirculation (EGR) temperature sensor is designed to match the function of an original sensor to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.

Product Features:
  • Direct replacement – this EGR valve temperature sensor is designed to match the fit and function of an original sensor on specified vehicles
  • Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
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DAYTON PARTS – WIRING HARNESS (Part No.311-0015)

WIRING HARNESS

from

$175.99
WIRING HARNESS

Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.96064)

Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System

from

$35.99
Carquest Premium Fuel/Water Separator Filters remove water and other impurities from the fuel before it reaches your engine fuel system. These filters effectively separate water from the fuel, preventing corrosion and damage to fuel injectors, pumps and other critical engine components. By keeping the fuel clean and water-free, these filters help ensure optimal combustion, improve engine efficiency, and reduce emissions. Carquest Premium Fuel/Water Separator Filters are designed to meet or exceed the performance requirements of the Original Equipment Manufacturer (OEM).

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Application engineered media which aids in stripping water in diesel fuels
  • Patent pending drain, metal end caps, which hold media in place
  • Rust resistant can, ensuring no leakage from inside
  • Made in USA
  • CAUTION: Furnished D-Ring must be installed on post for seal.
  • Use with 99185
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Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86965)

Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System

from

$89.99
Carquest Premium Fuel/Water Separator Filters remove water and other impurities from the fuel before it reaches your engine fuel system. These filters effectively separate water from the fuel, preventing corrosion and damage to fuel injectors, pumps and other critical engine components. By keeping the fuel clean and water-free, these filters help ensure optimal combustion, improve engine efficiency, and reduce emissions. Carquest Premium Fuel/Water Separator Filters are designed to meet or exceed the performance requirements of the Original Equipment Manufacturer (OEM).

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Made in USA
  • Includes Sensor Port Thread: M14 x 2.0
  • CAUTION: Furnished D-Ring must be installed on post for seal.
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Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86604)

Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System

from

$83.99
Carquest Premium Fuel/Water Separator Filters remove water and other impurities from the fuel before it reaches your engine fuel system. These filters effectively separate water from the fuel, preventing corrosion and damage to fuel injectors, pumps and other critical engine components. By keeping the fuel clean and water-free, these filters help ensure optimal combustion, improve engine efficiency, and reduce emissions. Carquest Premium Fuel/Water Separator Filters are designed to meet or exceed the performance requirements of the Original Equipment Manufacturer (OEM).

Product Features:
  • CAUTION: Furnished O-Ring must be installed on post for seal. For use with Deutz square sensor. NOT Interchangeable with 86422.
  • Sensor Port Thread: M14 x 2.0; Standpipe
  • Includes Standpipe. Sensor Port Thread: M14 x 2.0
  • CAUTION: Furnished O-Ring must be installed on post for seal. For use with Deutz square sensor.
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Upgrade your 2018 Kenworth T400 with Top-Quality Fuel and Emissions Systems

When it comes to maintaining or upgrading your 2018 Kenworth T400, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Kenworth or enhancing its overall performance, Fuel and Emissions Systems are key to keeping your T400 functioning at its best. At Advance Auto Parts, we offer a wide selection of 4 Fuel and Emissions Systems for the 2018 Kenworth T400, designed to meet your needs without breaking the bank. From Fuel Pump replacements to Diesel Emission Parts upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Fuel and Emissions Systems for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Fuel and Emissions Systems for your 2018 Kenworth T400 at great prices. Our Fuel and Emissions Systems inventory for this model ranges from just $83.99 to $175.99, with an average price of $121.49. Our 4 Fuel and Emissions Systems in stock come from 3 trusted brands, so you’re sure to find the right part for your 2018 Kenworth T400 without overspending.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Fuel and Emissions System upgrades. Explore related part types like Batteries and Chargers, Fluids and Chemicals and more to make sure your 2018 Kenworth T400 is always ready to roll. We’re committed to providing you with everything you need to keep your T400 in top shape, all in one place. Start shopping confidently below for your 2018 Kenworth T400!

Best-Selling Fuel Pumps for 2018 Kenworth T400s

Enhance the driving experience in your Kenworth with 1 quality Fuel Pump components, starting at $83.99.

Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86604)

Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System

from

$83.99
Carquest Premium Fuel/Water Separator Filters remove water and other impurities from the fuel before it reaches your engine fuel system. These filters effectively separate water from the fuel, preventing corrosion and damage to fuel injectors, pumps and other critical engine components. By keeping the fuel clean and water-free, these filters help ensure optimal combustion, improve engine efficiency, and reduce emissions. Carquest Premium Fuel/Water Separator Filters are designed to meet or exceed the performance requirements of the Original Equipment Manufacturer (OEM).

Product Features:
  • CAUTION: Furnished O-Ring must be installed on post for seal. For use with Deutz square sensor. NOT Interchangeable with 86422.
  • Sensor Port Thread: M14 x 2.0; Standpipe
  • Includes Standpipe. Sensor Port Thread: M14 x 2.0
  • CAUTION: Furnished O-Ring must be installed on post for seal. For use with Deutz square sensor.
See More

Most Popular 2018 Kenworth T400 Diesel Emission Parts

Customize your Kenworth with 2 Diesel Emission Parts products like Diesel Exhaust Fluid (DEF) Urea Filter and Selective Catalytic Reduction (SCR) Wiring, all priced under $175.99.

Carquest Premium – Diesel Exhaust Fluid Filter for SCR Systems (Part No.96679)

Diesel Exhaust Fluid Filter for SCR Systems

from

$108.99
Carquest Premium Diesel Exhaust Fluid (DEF) Filters help reduce harmful emissions and improve air quality. DEF filters remove impurities such as dirt, debris, and particulates from the diesel exhaust fluid before entering your vehicle’s emission control system. These filters allow clean fluid to break down harmful nitrogen oxide (NOx) gases produced during diesel combustion. By ensuring proper DEF flow and helping protect system components, DEF filters help diesel engines meet strict emission standards. Carquest Premium Diesel Exhaust Fluid (DEF) Filters are designed to meet or exceed the performance requirements of the Original Equipment Manufacturer (OEM).

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Contains Plug and Filter Removal Tool
See More

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

WIRING HARNESS

from

$175.99
WIRING HARNESS

Top Picks for 2018 Kenworth T400 Exhaust Gas Recirculation (EGR) Parts

Upgrade Kenworth T400s with top-quality Exhaust Gas Recirculation (EGR) Parts parts, including 1 OEM and aftermarket selections for your 2018 model.

Dorman – HD Solutions – Exhaust Gas Recirculation Temperature Sensor (Part No.904-7118)

Exhaust Gas Recirculation Temperature Sensor

from

$116.99
This exhaust gas recirculation (EGR) temperature sensor is designed to match the function of an original sensor to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.

Product Features:
  • Direct replacement – this EGR valve temperature sensor is designed to match the fit and function of an original sensor on specified vehicles
  • Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
See More

FAQs for 2018 Kenworth T400 Fuel and Emissions Systems

Which Fuel and Emissions Systems are best-sellers for 2018 Kenworth T400s?

Out of 4 Fuel and Emissions Systems that fit 2018 Kenworth T400s, the following parts are the top sellers:

What’s the price range for 2018 Kenworth T400 Fuel and Emissions Systems?

Fuel and Emissions System prices for the 2018 Kenworth T400 start at $83.99 and go up to $175.99 for the most premium parts.

What’s the average price of a Fuel and Emissions System for a 2018 Kenworth T400?

The average price for Fuel and Emissions Systems for the 2018 Kenworth T400 is $121.49. Keep in mind the variety of part types within our Fuel and Emissions System category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Fuel and Emissions Systems for other Kenworth T400 model years?

Yes, we currently carry Fuel and Emissions Systems for 23 model years of Kenworth T400s between 1984 and 2023. Fuel and Emissions Systems are bought most frequently for the following model years: 2022, 2021, 2020, 2019, 2017, 2016, 2015, 2014, and 2013.

What are the cheapest Fuel and Emissions Systems for my 2018 Kenworth T400?

The cheapest 2018 Kenworth T400 Fuel and Emissions Systems we carry in stock are:

What types of Fuel and Emissions Systems do you sell for my 2018 Kenworth T400?

As of 11/2/25, these are some of the most in-demand types of Fuel and Emissions Systems for a 2018 Kenworth T400:

Can I get help with 2018 Kenworth T400 Fuel and Emissions System orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Kenworth Fuel and Emissions Systems and more.

What is your return policy for Kenworth T400 Fuel and Emissions Systems?

Advance Auto Parts keeps returns simple. For new Kenworth T400 Fuel and Emissions Systems and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.