2003 Western Star 4900EX Fuel and Emissions Systems
Find Your Specific 2003 Western Star 4900EX Fuel and Emissions Systems
Below you will find various in-demand Western Star Fuel and Emissions Systems, components and accessories for your 2003 4900EX. Advance Auto Parts has popular 4900EX parts like Exhaust Gas Recirculation (EGR) Parts, Fuel Sensors, Diesel Emission Parts and more. You’ll also find aftermarket and OEM Fuel and Emissions Systems for other 4900EX model years including
2014,
2015,
2016,
2017,
2018,
2019,
2020,
2021,
2022 and more. Select a category of 2003 Western Star 4900EX Fuel and Emissions Systems below and start saving instantly.
Popular 2003 Western Star 4900EX Fuel and Emissions Systems Categories
Essential Fuel and Emissions Systems for 2003 Western Star 4900EXes
Dorman – HD Solutions – Intake Manifold Temp Sensor (Part No.904-7044)
from
$43.99
Dorman offers a variety of some of today’s most popular Multi-Purpose Sensors for measuring several types of temperature in the vehicle. Our direct replacement Multi-Purpose Sensor is ideal for measuring coolant and auto transmission temperature. Each replacement restores proper vehicle operation and provides a longer service life. Plus, these direct fit Sensors are affordable and easy to install.
Product Features:
See More
Product Features:
- Direct replacement for a proper fit every time
- Replacement prevents any further damage to vehicle engine
- No special tools required during installation
- Thoroughly tested to meet product standards and quality
Carquest Premium – Diesel Exhaust Fluid Filter for SCR Systems (Part No.96679)
from
$112.99
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:
See More
Product Features:
- Original Equipment Manufacturer (OEM) Design: Designed to meet or exceed OEM performance standards.
- Effective Contaminant Removal:┐Filters out dirt, debris, and particulates from diesel exhaust fluid.
- Maintains System Efficiency:┐Ensures proper DEF flow for breaking down harmful gases.
- Enhances Engine Performance:┐Promotes cleaner combustion and reliable engine operation.
- Supports Environmental Compliance:┐Helps vehicles meet stringent emission regulations.
Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86813)
from
$85.99
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:
See More
Product Features:
- Original Equipment Manufacturer (OEM) Design: Designed to meet or exceed OEM performance standards.
- Efficient Water Removal: Separates damaging water and contaminants from fuel to protect sensitive fuel system components.
- Enhances Engine Performance:┐Delivers clean, water-free fuel for optimal combustion and efficiency.
- Rust resistant can, ensuring no leakage from inside
- Made in USA
- Includes Integral Post Seal
Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86406)
from
$42.49
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:
See More
Product Features:
- Original Equipment Manufacturer (OEM) Design: Designed to meet or exceed OEM performance standards.
- Efficient Water Removal: Separates damaging water and contaminants from fuel to protect sensitive fuel system components.
- Enhances Engine Performance:┐Delivers clean, water-free fuel for optimal combustion and efficiency.
- Rust resistant can, ensuring no leakage from inside
- Made in USA
- Includes Standpipe
- CAUTION: Furnished D-Ring must be installed on post for seal.
Dorman – HD Solutions – Exhaust Gas Recirculation Cooler V-Band Clamp (Part No.904-5154)
from
$65.99
This exhaust gas recirculation (EGR) cooler clamp is designed to match the fit of the original clamp on specified vehicles and is recommended for replacement during EGR cooler service. It is engineered from stainless steel for reliable service life.
Product Features:
See More
Product Features:
- Direct replacement – this exhaust gas recirculation (EGR) cooler clamp is designed to match the fit of the original clamp and is recommended for replacement during EGR cooler service
- Ideal solution – engineered from stainless steel to withstand extreme heat and to resist corrosion
- 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
Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86412)
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:
See More
Product Features:
- Original Equipment Manufacturer (OEM) Design: Designed to meet or exceed OEM performance standards.
- Efficient Water Removal: Separates damaging water and contaminants from fuel to protect sensitive fuel system components.
- Enhances Engine Performance:┐Delivers clean, water-free fuel for optimal combustion and efficiency.
- Rust resistant can, ensuring no leakage from inside
- Made in USA
- Includes Integral Post Seal. Sensor Port Thread: 1/2-20
Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86812)
from
$93.99
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:
See More
Product Features:
- Original Equipment Manufacturer (OEM) Design: Designed to meet or exceed OEM performance standards.
- Efficient Water Removal: Separates damaging water and contaminants from fuel to protect sensitive fuel system components.
- Enhances Engine Performance:┐Delivers clean, water-free fuel for optimal combustion and efficiency.
Dorman – HD Solutions – Heavy Duty Exhaust Gas Recirculation Cooler Gasket Kit (Part No.904-5007)
from
$113.99
Tight seals are essential to proper EGR cooler operation. This EGR cooler gasket kit contains all the gaskets and seals required to ensure a solid repair. Made of quality materials, this kit is a direct replacement for original equipment parts.
Product Features:
See More
Product Features:
- Direct replacement – this exhaust gas recirculation (EGR) gasket kit matches the original equipment gaskets for this vehicle application
- Durable construction – the components in this EGR cooler gasket kit are made of quality materials for a secure fit and excellent durability
- Convenient solution – the gaskets in this kit should be replaced whenever repairs are performed on the EGR cooler, intake manifold or oil cooler
- Quality tested – this part has undergone try-on and material testing to ensure a quality fit and long service life
Upgrade your 2003 Western Star 4900EX with Top-Quality Fuel and Emissions Systems
When it comes to maintaining or upgrading your 2003 Western Star 4900EX, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Western Star or enhancing its overall performance, Fuel and Emissions Systems are key to keeping your 4900EX functioning at its best. At Advance Auto Parts, we offer a wide selection of 8 Fuel and Emissions Systems for the 2003 Western Star 4900EX, designed to meet your needs without breaking the bank.
From
Exhaust Gas Recirculation (EGR) Part
replacements to
Fuel Sensors
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 2003 Western Star 4900EX at great prices.
Our Fuel and Emissions Systems inventory for this model
ranges from just $42.49 to $113.99, with
an average price of $76.55.
Our 8 Fuel and Emissions Systems in stock come from 2 trusted brands, so you’re sure to find the right part for your 2003 Western Star 4900EX without overspending.
Top Brands and High Customer Satisfaction
Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2003 Western Star 4900EX, we stock popular OEM and aftermarket Fuel and Emissions Systems from top names
like Carquest Premium, and more.
Carquest Premium Fuel and Emissions Systems
start at just $42.49 and boast an impressive 4.4 stars average rating from customers.
With 7 customer reviews and counting, our 2003 Western Star 4900EX Fuel and Emissions Systems have a strong track record of reliability, ensuring you can trust your purchase.
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 2003 Western Star 4900EX is always ready to roll. We’re committed to providing you with everything you need to keep your 4900EX in top shape, all in one place.
Start shopping confidently below for your 2003 Western Star 4900EX!
Best-Selling Exhaust Gas Recirculation (EGR) Parts for 2003 Western Star 4900EXes
Enhance the driving experience in your Western Star with 2 quality Exhaust Gas Recirculation (EGR) Part components, starting at $65.99.
Dorman – HD Solutions – Heavy Duty Exhaust Gas Recirculation Cooler Gasket Kit (Part No.904-5007)
from
$113.99
Tight seals are essential to proper EGR cooler operation. This EGR cooler gasket kit contains all the gaskets and seals required to ensure a solid repair. Made of quality materials, this kit is a direct replacement for original equipment parts.
Product Features:
See More
Product Features:
- Direct replacement – this exhaust gas recirculation (EGR) gasket kit matches the original equipment gaskets for this vehicle application
- Durable construction – the components in this EGR cooler gasket kit are made of quality materials for a secure fit and excellent durability
- Convenient solution – the gaskets in this kit should be replaced whenever repairs are performed on the EGR cooler, intake manifold or oil cooler
- Quality tested – this part has undergone try-on and material testing to ensure a quality fit and long service life
Dorman – HD Solutions – Exhaust Gas Recirculation Cooler V-Band Clamp (Part No.904-5154)
from
$65.99
This exhaust gas recirculation (EGR) cooler clamp is designed to match the fit of the original clamp on specified vehicles and is recommended for replacement during EGR cooler service. It is engineered from stainless steel for reliable service life.
Product Features:
See More
Product Features:
- Direct replacement – this exhaust gas recirculation (EGR) cooler clamp is designed to match the fit of the original clamp and is recommended for replacement during EGR cooler service
- Ideal solution – engineered from stainless steel to withstand extreme heat and to resist corrosion
- 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
Most Popular 2003 Western Star 4900EX Fuel Sensors
Customize your Western Star with 1 Fuel Sensors products
like Fuel Temperature Sensors, all
priced under $43.99.
Dorman – HD Solutions – Intake Manifold Temp Sensor (Part No.904-7044)
from
$43.99
Dorman offers a variety of some of today’s most popular Multi-Purpose Sensors for measuring several types of temperature in the vehicle. Our direct replacement Multi-Purpose Sensor is ideal for measuring coolant and auto transmission temperature. Each replacement restores proper vehicle operation and provides a longer service life. Plus, these direct fit Sensors are affordable and easy to install.
Product Features:
See More
Product Features:
- Direct replacement for a proper fit every time
- Replacement prevents any further damage to vehicle engine
- No special tools required during installation
- Thoroughly tested to meet product standards and quality
Top Picks for 2003 Western Star 4900EX Diesel Emission Parts
Upgrade Western Star 4900EXes with top-quality Diesel Emission Parts parts, including 1 OEM and aftermarket selections for your 2003 model.
Carquest Premium – Diesel Exhaust Fluid Filter for SCR Systems (Part No.96679)
from
$112.99
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:
See More
Product Features:
- Original Equipment Manufacturer (OEM) Design: Designed to meet or exceed OEM performance standards.
- Effective Contaminant Removal:┐Filters out dirt, debris, and particulates from diesel exhaust fluid.
- Maintains System Efficiency:┐Ensures proper DEF flow for breaking down harmful gases.
- Enhances Engine Performance:┐Promotes cleaner combustion and reliable engine operation.
- Supports Environmental Compliance:┐Helps vehicles meet stringent emission regulations.
In-Demand Fuel Pumps for 2003 Western Star 4900EXes
Select from 4 premium Fuel Pumps parts for your 2003 Western Star 4900EX, with prices ranging from $42.49 to $93.99.
Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86406)
from
$42.49
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:
See More
Product Features:
- Original Equipment Manufacturer (OEM) Design: Designed to meet or exceed OEM performance standards.
- Efficient Water Removal: Separates damaging water and contaminants from fuel to protect sensitive fuel system components.
- Enhances Engine Performance:┐Delivers clean, water-free fuel for optimal combustion and efficiency.
- Rust resistant can, ensuring no leakage from inside
- Made in USA
- Includes Standpipe
- CAUTION: Furnished D-Ring must be installed on post for seal.
Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86812)
from
$93.99
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:
See More
Product Features:
- Original Equipment Manufacturer (OEM) Design: Designed to meet or exceed OEM performance standards.
- Efficient Water Removal: Separates damaging water and contaminants from fuel to protect sensitive fuel system components.
- Enhances Engine Performance:┐Delivers clean, water-free fuel for optimal combustion and efficiency.
Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86412)
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:
See More
Product Features:
- Original Equipment Manufacturer (OEM) Design: Designed to meet or exceed OEM performance standards.
- Efficient Water Removal: Separates damaging water and contaminants from fuel to protect sensitive fuel system components.
- Enhances Engine Performance:┐Delivers clean, water-free fuel for optimal combustion and efficiency.
- Rust resistant can, ensuring no leakage from inside
- Made in USA
- Includes Integral Post Seal. Sensor Port Thread: 1/2-20
Carquest Premium – Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (Part No.86813)
from
$85.99
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:
See More
Product Features:
- Original Equipment Manufacturer (OEM) Design: Designed to meet or exceed OEM performance standards.
- Efficient Water Removal: Separates damaging water and contaminants from fuel to protect sensitive fuel system components.
- Enhances Engine Performance:┐Delivers clean, water-free fuel for optimal combustion and efficiency.
- Rust resistant can, ensuring no leakage from inside
- Made in USA
- Includes Integral Post Seal
Top-Rated Fuel and Emissions Systems Brands For Your 2003 Western Star 4900EX
Shop for the best-rated brands offering Fuel and Emissions Systems and other products for your 2003 Western Star 4900EXes. Below you’ll find some of our best rated Fuel and Emissions Systems from Carquest Premium, and more. Fuel and Emissions Systems from these brands that fit a 2003 4900EX start at just $42.49 and are rated as high as 4.4 stars. OEM and aftermarket Fuel and Emissions Systems don’t get more top quality, durable, and affordable than from the brands below.
Popular Carquest Premium 2003 Western Star 4900EX Fuel and Emissions Systems
When it comes to maintaining or upgrading your 2003 Western Star 4900EX, using quality Fuel and Emissions Systems is essential to ensure durability and a perfect fit. Carquest Premium ticks all of those boxes. We offer a wide selection of Carquest Premium Fuel and Emissions Systems, specifically designed for the 2003 Western Star 4900EX. With over 2 Carquest Premium brand Fuel and Emissions Systems in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $42.49, with an average price of just $68.24. Plus, with over 6 customer reviews and an average rating of 4.4 stars, you can trust that our Carquest Premium Fuel and Emissions Systems will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.
from
$42.49
(1)
Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System
“your website said it didn’t fit my truck. news to me as i have been using them for years. called customer serviceand she was very nice and straighted ”
from
$93.99
(5)
Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System
“Just when I needs it”
FAQs for 2003 Western Star 4900EX Fuel and Emissions Systems
Which Fuel and Emissions Systems are best-sellers for 2003 Western Star 4900EXes?
Out of 8 Fuel and Emissions Systems that fit 2003 Western Star 4900EXes, the following parts are the top sellers:
- Diesel Exhaust Fluid Filter for SCR Systems (12005494) – $112.99
- Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (10693817) – $86.99
- Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (10693779) – $85.99
What’s the price range for 2003 Western Star 4900EX Fuel and Emissions Systems?
Fuel and Emissions System prices for the 2003 Western Star 4900EX start at $42.49 and go up to $113.99 for the most premium parts.
What’s the average price of a Fuel and Emissions System for a 2003 Western Star 4900EX?
The average price for Fuel and Emissions Systems for the 2003 Western Star 4900EX is $76.55. 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 Western Star 4900EX model years?
What are the cheapest Fuel and Emissions Systems for my 2003 Western Star 4900EX?
The cheapest 2003 Western Star 4900EX Fuel and Emissions Systems we carry in stock are:
- Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (10693599) – $42.49
- Intake Manifold Temp Sensor (12007380) – $43.99
- Exhaust Gas Recirculation Cooler V-Band Clamp (12102351) – $65.99
- Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (10693779) – $85.99
- Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (10693817) – $86.99
What are the top-rated Fuel and Emissions Systems that fit the 2003 Western Star 4900EX?
Out of 7 reviews by customers, our 2003 Western Star 4900EX Fuel and Emissions Systems have an average customer rating of . These are some of the highest-rated Fuel and Emissions System types for the 2003 Western Star 4900EX and their top-rated products:
- Fuel Pumps
- Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (10693599) – $42.49
- Fuel/Water Separator: Quality Removal of Water and Contaminants from Fuel System (10693791) – $93.99
What types of Fuel and Emissions Systems do you sell for my 2003 Western Star 4900EX?
As of 3/1/26, these are some of the most in-demand types of Fuel and Emissions Systems for a 2003 Western Star 4900EX:
Can I get help with 2003 Western Star 4900EX 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 Western Star Fuel and Emissions Systems and more.
What is your return policy for Western Star 4900EX Fuel and Emissions Systems?
Advance Auto Parts keeps returns simple. For new Western Star 4900EX 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.
