2021 Western Star 4900SA Fuel and Emissions Systems
Find Your Specific 2021 Western Star 4900SA Fuel and Emissions Systems
Below you will find various in-demand Western Star Fuel and Emissions Systems, components and accessories for your 2021 4900SA. Advance Auto Parts has popular 4900SA parts like Diesel Fuel Injectors Diesel Emission Parts and more. You’ll also find aftermarket and OEM Fuel and Emissions Systems for other 4900SA model years including
2013,
2014,
2015,
2016,
2017,
2018,
2019,
2020,
2022 and more. Select a category of 2021 Western Star 4900SA Fuel and Emissions Systems below and start saving instantly.
Popular 2021 Western Star 4900SA Fuel and Emissions Systems Categories
Essential Fuel and Emissions Systems for 2021 Western Star 4900SAs
Carquest Premium – Diesel Exhaust Fluid Filter Kit (Part No.96877)
from
$324.99
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:
- Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
- Contains Frost Compensation Membrane, Spray Lubricant, Instruction Sheet
Dorman – HD Solutions – HD Diesel Particulate Filter – Not For Sale – CA (Part No.674-2055)
from
$4020.99
This diesel particulate filter (DPF) 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:
See More
Product Features:
- Direct replacement – this diesel particulate filter (DPF) 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
Dorman – HD Solutions – HD Diesel Particulate Filter – Not For Sale – CA (Part No.674-2025)
from
$6734.99
This diesel particulate filter (DPF) 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:
See More
Product Features:
- Direct replacement – this diesel particulate filter (DPF) 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
DAYTON PARTS – HD DPF (Part No.674-2059)
from
$2006.99
HD DPF
Dorman – HD Solutions – HD Diesel Particulate Filter – Not For Sale – CA (Part No.674-2038)
from
$5495.99
This diesel particulate filter (DPF) 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:
See More
Product Features:
- Direct replacement – this diesel particulate filter (DPF) 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
Dorman – HD Solutions – HD Diesel Particulate Filter – Not For Sale – CA (Part No.674-2013)
from
$5893.99
This diesel particulate filter (DPF) 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:
See More
Product Features:
- Direct replacement – this diesel particulate filter (DPF) 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
Dorman – HD Solutions – HD Diesel Particulate Filter – Not For Sale – CA (Part No.674-2002)
from
$4267.99
This diesel particulate filter (DPF) 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:
See More
Product Features:
- Direct replacement – this diesel particulate filter (DPF) 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
Dorman – HD Solutions – HD Diesel Particulate Filter – Not For Sale – CA (Part No.674-2039)
from
$3359.99
This diesel particulate filter (DPF) 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:
See More
Product Features:
- Direct replacement – this diesel particulate filter (DPF) 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
Upgrade your 2021 Western Star 4900SA with Top-Quality Fuel and Emissions Systems
When it comes to maintaining or upgrading your 2021 Western Star 4900SA, 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 4900SA functioning at its best. At Advance Auto Parts, we offer a wide selection of 2 Fuel and Emissions Systems for the 2021 Western Star 4900SA, designed to meet your needs without breaking the bank.
From
Diesel Fuel Injector
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 2021 Western Star 4900SA at great prices.
Our Fuel and Emissions Systems inventory for this model
ranges from just $324.99 to $2,006.99, with
an average price of $1,045.85.
Our 2 Fuel and Emissions Systems in stock come from 2 trusted brands, so you’re sure to find the right part for your 2021 Western Star 4900SA 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 2021 Western Star 4900SA is always ready to roll. We’re committed to providing you with everything you need to keep your 4900SA in top shape, all in one place.
Start shopping confidently below for your 2021 Western Star 4900SA!
Best-Selling Diesel Fuel Injectors for 2021 Western Star 4900SAs
Enhance the driving experience in your Western Star with 1 quality Diesel Fuel Injector components, starting at $324.99.
Carquest Premium – Diesel Exhaust Fluid Filter Kit (Part No.96877)
from
$324.99
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:
- Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
- Contains Frost Compensation Membrane, Spray Lubricant, Instruction Sheet
Most Popular 2021 Western Star 4900SA Diesel Emission Parts
Customize your Western Star with 1 Diesel Emission Parts products
like Diesel Particulate Filters, all
priced under $2,006.99.
DAYTON PARTS – HD DPF (Part No.674-2059)
from
$2006.99
HD DPF
FAQs for 2021 Western Star 4900SA Fuel and Emissions Systems
Which Fuel and Emissions Systems are best-sellers for 2021 Western Star 4900SAs?
Out of 2 Fuel and Emissions Systems that fit 2021 Western Star 4900SAs, the following parts are the top sellers:
- Diesel Exhaust Fluid Filter Kit (12501680) – $324.99
- HD DPF (50174047) – $2,006.99
What’s the price range for 2021 Western Star 4900SA Fuel and Emissions Systems?
Fuel and Emissions System prices for the 2021 Western Star 4900SA start at $324.99 and go up to $2,006.99 for the most premium parts.
What’s the average price of a Fuel and Emissions System for a 2021 Western Star 4900SA?
The average price for Fuel and Emissions Systems for the 2021 Western Star 4900SA is $1,045.85. 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 4900SA model years?
What are the cheapest Fuel and Emissions Systems for my 2021 Western Star 4900SA?
The cheapest 2021 Western Star 4900SA Fuel and Emissions Systems we carry in stock are:
- Diesel Exhaust Fluid Filter Kit (12501680) – $324.99
- HD DPF (50174047) – $2,006.99
What types of Fuel and Emissions Systems do you sell for my 2021 Western Star 4900SA?
As of 11/2/25, these are some of the most in-demand types of Fuel and Emissions Systems for a 2021 Western Star 4900SA:
Can I get help with 2021 Western Star 4900SA 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 4900SA Fuel and Emissions Systems?
Advance Auto Parts keeps returns simple. For new Western Star 4900SA 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.
