2001 Freightliner XC Fuel and Emissions Systems

Essential Fuel and Emissions Systems for 2001 Freightliner XCs

Dorman – HD Solutions – Fuel Injector O-Ring Kit (Part No.904-8055)

Fuel Injector O-Ring Kit

from

$38.49
The components in this fuel injector O-ring kit are designed to match the fit of the original O-rings on specified vehicles. They are engineered to help ensure leak-free connections to the fuel injectors during service or when the rings are damaged.

Product Features:
  • Direct replacements – the components in this fuel injector O-ring kit are designed to match the fit of the original O-rings on specified vehicles
  • Ideal solution – engineered to help ensure leak-free connections to the fuel injectors during service or when the rings are damaged
  • 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

Delphi – Fuel Injector (Part No.EX634763)

Fuel Injector

from

$735.99
Delphi knows OE technology and how to service diesel systems. For more than 60 years, we have partnered with 25 OEM’s to bring our OE diesel powertrain knowledge and expertise to the aftermarket. Delphi diesel systems operate at high performance to meet today’s tough emissions standards and are built to OE specifications for the fit, form, and function technicians expect. Trust Delphi for an unrivalled, cost-effective diesel program to help build your business.

Product Features:
  • 100% O Ring replacement
  • All Delphi injectors are tested utilizing OE methodologies
  • Delphi injectors are produced in a Delphi ISO 9001:2008 certified facility
  • No internal seal rings equals minimized leakage
  • Recessed fuel exit minimizing possible plugging
  • Reduced spray variation, accurate fuel spray pattern mean better emissions and cold start capabilities
  • Thermally isolates fuel from engine by drawing manifold heat away from the fuel rail eliminating engine hesitation due to vapor lock
See More

Delphi – Fuel Injector (Part No.EX639349)

Fuel Injector

from

$359.99
Delphi knows OE technology and how to service diesel systems. For more than 60 years, we have partnered with 25 OEM’s to bring our OE diesel powertrain knowledge and expertise to the aftermarket. Delphi diesel systems operate at high performance to meet today’s tough emissions standards and are built to OE specifications for the fit, form, and function technicians expect. Trust Delphi for an unrivalled, cost-effective diesel program to help build your business.

Product Features:
  • 100% O Ring replacement
  • All Delphi injectors are tested utilizing OE methodologies
  • Delphi injectors are produced in a Delphi ISO 9001:2008 certified facility
  • No internal seal rings equals minimized leakage
  • Recessed fuel exit minimizing possible plugging
  • Reduced spray variation, accurate fuel spray pattern mean better emissions and cold start capabilities
  • Thermally isolates fuel from engine by drawing manifold heat away from the fuel rail eliminating engine hesitation due to vapor lock
See More

Delphi – Fuel Injector (Part No.EX634761)

Fuel Injector

from

$700.99
Delphi knows OE technology and how to service diesel systems. For more than 60 years, we have partnered with 25 OEM’s to bring our OE diesel powertrain knowledge and expertise to the aftermarket. Delphi diesel systems operate at high performance to meet today’s tough emissions standards and are built to OE specifications for the fit, form, and function technicians expect. Trust Delphi for an unrivalled, cost-effective diesel program to help build your business.

Product Features:
  • 100% O Ring replacement
  • All Delphi injectors are tested utilizing OE methodologies
  • Delphi injectors are produced in a Delphi ISO 9001:2008 certified facility
  • No internal seal rings equals minimized leakage
  • Recessed fuel exit minimizing possible plugging
  • Reduced spray variation, accurate fuel spray pattern mean better emissions and cold start capabilities
  • Thermally isolates fuel from engine by drawing manifold heat away from the fuel rail eliminating engine hesitation due to vapor lock
See More

Delphi – Fuel Injector (Part No.EX634762)

Fuel Injector

from

$724.99
Delphi knows OE technology and how to service diesel systems. For more than 60 years, we have partnered with 25 OEM’s to bring our OE diesel powertrain knowledge and expertise to the aftermarket. Delphi diesel systems operate at high performance to meet today’s tough emissions standards and are built to OE specifications for the fit, form, and function technicians expect. Trust Delphi for an unrivalled, cost-effective diesel program to help build your business.

Product Features:
  • 100% O Ring replacement
  • All Delphi injectors are tested utilizing OE methodologies
  • Delphi injectors are produced in a Delphi ISO 9001:2008 certified facility
  • No internal seal rings equals minimized leakage
  • Recessed fuel exit minimizing possible plugging
  • Reduced spray variation, accurate fuel spray pattern mean better emissions and cold start capabilities
  • Thermally isolates fuel from engine by drawing manifold heat away from the fuel rail eliminating engine hesitation due to vapor lock
See More

Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86412)

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

from

$86.99
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
  • Includes Integral Post Seal. Sensor Port Thread: 1/2-20
See More

Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86408)

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

from

$53.99
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.
  • Contains Sensor Port Thread: 1 1/4-10;Integral Post Seal
  • Includes Integral Post Seal. Sensor Port Thread: 1 1/4-10
  • CAUTION: Furnished O-Ring must be installed on post for seal.
See More

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

Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86422)

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

from

$60.99
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.
  • Contains Sensor Port Thread: M14 x 2.0; Standpipe
  • Includes Standpipe. Sensor Port Thread: M14 x 2.0
  • CAUTION: Furnished D-Ring must be installed on post for seal. NOT Interchangeable with 86604.
See More

Upgrade your 2001 Freightliner XC with Top-Quality Fuel and Emissions Systems

When it comes to maintaining or upgrading your 2001 Freightliner XC, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Freightliner or enhancing its overall performance, Fuel and Emissions Systems are key to keeping your XC functioning at its best. At Advance Auto Parts, we offer a wide selection of 5 Fuel and Emissions Systems for the 2001 Freightliner XC, designed to meet your needs without breaking the bank. From Fuel Pump replacements to Fuel Injectors 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 2001 Freightliner XC at great prices. Our Fuel and Emissions Systems inventory for this model ranges from just $38.49 to $359.99, with an average price of $119.49. Our 5 Fuel and Emissions Systems in stock come from 3 trusted brands, so you’re sure to find the right part for your 2001 Freightliner XC 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 2001 Freightliner XC is always ready to roll. We’re committed to providing you with everything you need to keep your XC in top shape, all in one place. Start shopping confidently below for your 2001 Freightliner XC!

Best-Selling Fuel Pumps for 2001 Freightliner XCs

Enhance the driving experience in your Freightliner with 3 quality Fuel Pump components, starting at $53.99.

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

Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86422)

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

from

$60.99
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.
  • Contains Sensor Port Thread: M14 x 2.0; Standpipe
  • Includes Standpipe. Sensor Port Thread: M14 x 2.0
  • CAUTION: Furnished D-Ring must be installed on post for seal. NOT Interchangeable with 86604.
See More

Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86408)

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

from

$53.99
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.
  • Contains Sensor Port Thread: 1 1/4-10;Integral Post Seal
  • Includes Integral Post Seal. Sensor Port Thread: 1 1/4-10
  • CAUTION: Furnished O-Ring must be installed on post for seal.
See More

Most Popular 2001 Freightliner XC Fuel Injectors

Customize your Freightliner with 2 Fuel Injectors products like Fuel Injectors and Fuel Injector O-Ring Kits, all priced under $359.99.

Delphi – Fuel Injector (Part No.EX639349)

Fuel Injector

from

$359.99
Delphi knows OE technology and how to service diesel systems. For more than 60 years, we have partnered with 25 OEM’s to bring our OE diesel powertrain knowledge and expertise to the aftermarket. Delphi diesel systems operate at high performance to meet today’s tough emissions standards and are built to OE specifications for the fit, form, and function technicians expect. Trust Delphi for an unrivalled, cost-effective diesel program to help build your business.

Product Features:
  • 100% O Ring replacement
  • All Delphi injectors are tested utilizing OE methodologies
  • Delphi injectors are produced in a Delphi ISO 9001:2008 certified facility
  • No internal seal rings equals minimized leakage
  • Recessed fuel exit minimizing possible plugging
  • Reduced spray variation, accurate fuel spray pattern mean better emissions and cold start capabilities
  • Thermally isolates fuel from engine by drawing manifold heat away from the fuel rail eliminating engine hesitation due to vapor lock
See More

Dorman – HD Solutions – Fuel Injector O-Ring Kit (Part No.904-8055)

Fuel Injector O-Ring Kit

from

$38.49
The components in this fuel injector O-ring kit are designed to match the fit of the original O-rings on specified vehicles. They are engineered to help ensure leak-free connections to the fuel injectors during service or when the rings are damaged.

Product Features:
  • Direct replacements – the components in this fuel injector O-ring kit are designed to match the fit of the original O-rings on specified vehicles
  • Ideal solution – engineered to help ensure leak-free connections to the fuel injectors during service or when the rings are damaged
  • 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 2001 Freightliner XC Fuel and Emissions Systems

Which Fuel and Emissions Systems are best-sellers for 2001 Freightliner XCs?

Out of 5 Fuel and Emissions Systems that fit 2001 Freightliner XCs, the following parts are the top sellers:

What’s the price range for 2001 Freightliner XC Fuel and Emissions Systems?

Fuel and Emissions System prices for the 2001 Freightliner XC start at $38.49 and go up to $359.99 for the most premium parts.

What’s the average price of a Fuel and Emissions System for a 2001 Freightliner XC?

The average price for Fuel and Emissions Systems for the 2001 Freightliner XC is $119.49. 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 Freightliner XC model years?

Yes, we currently carry Fuel and Emissions Systems for 3 model years of Freightliner XCs between 2002 and 2005. Fuel and Emissions Systems are bought most frequently for the following model years: 2005, 2004, 2003, and 2002.

What are the cheapest Fuel and Emissions Systems for my 2001 Freightliner XC?

The cheapest 2001 Freightliner XC Fuel and Emissions Systems we carry in stock are:

What types of Fuel and Emissions Systems do you sell for my 2001 Freightliner XC?

As of 11/2/25, these are some of the most in-demand types of Fuel and Emissions Systems for a 2001 Freightliner XC:

Can I get help with 2001 Freightliner XC 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 Freightliner Fuel and Emissions Systems and more.

What is your return policy for Freightliner XC Fuel and Emissions Systems?

Advance Auto Parts keeps returns simple. For new Freightliner XC 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.