2021 Audi S4 Car Parts & Accessories

You have come to the right place if you need new or replacement parts for your 2021 S4. Advance Auto carries over 273 aftermarket parts for your 2021 Audi S4, along with original equipment manufacturer (OEM) parts. You will find amazing prices on 2021 S4 Transmission Parts and Clutch Systems. Plus, our selection of 2021 Body Parts for your S4 are some of the lowest in the market.

Find replacement parts and upgrades for your 2021 Audi S4. Use our customer reviews of Automotive Accessories parts and others, along with user ratings on the many of the products we offer. You won’t find an easier way to shop for 2021 Audi S4 performance parts, 2021 Audi S4 body parts, interior components, or any type of part for that matter. Get your S4 upgraded or back in pristine shape by shopping Advance Auto Parts.

2021 Audi S4 Body Parts

Below you can find the top 2021 Audi S4 aftermarket accessories. Want to see the complete catalog of Body Parts? Click on “View All” to view each individual Audi 2021 S4 part.

Burco – Side View Replacement Mirror (Part No.5759)

Side View Replacement Mirror

from

$59.99
Burco Redi Cuts mirror replacements provide a solution when just the mirror glass is broken. Our mirror replacements are an economical and quality alternative to high-priced OEM mirror assemblies. Burco offers an industry leading 4,700+ Redi Cuts mirror replacements covering 10,000 vehicles and counting. b+savvy and replace that broken side mirror!

Product Features:
  • Made in USA
  • Exact Fit
  • Safety Smooth Edges
  • Replaces OE Mirror
  • Premium Mirror Glass
  • Break-Free Guarantee
  • Instructions Included
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Burco – Door Mirror Replacement Glass (Part No.4731)

Door Mirror Replacement Glass

from

$29.99
Burco Redi Cuts mirror replacements provide a solution when just the mirror glass is broken. Our mirror replacements are an economical and quality alternative to high-priced OEM mirror assemblies. Burco offers an industry leading 4,700+ Redi Cuts mirror replacements covering 10,000 vehicles and counting. b+savvy and replace that broken side mirror!

Product Features:
  • Made in USA
  • Exact Fit
  • Safety Smooth Edges
  • Replaces OE Mirror
  • Premium Mirror Glass
  • Break-Free Guarantee
  • Instructions Included
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Autopart International Inc – Strut Bumper (Part No.L30363157674API)

Strut Bumper

from

$11.60
Strut Bumper

2021 S4 Automotive Accessories

Customers frequently purchased the following top Automotive Accessories for their 2021 S4. Click on “View All” to see more great prices on 2021 S4 aftermarket replacement Automotive Accessories.

Budge – Duro SUV Cover, Gray, Size U1: Fits up to 15’6" L, 3 Layer, Water Resistant, Scratchproof, Dustproof (Part No.D-3)

Duro SUV Cover, Gray, Size U1: Fits up to 15'6" L, 3 Layer, Water Resistant, Scratchproof, Dustproof

from

$86.99
The Budge Ultra Car Cover offers protection against dust, debris, tree sap and other environmental pollutants. This lightweight vehicle cover is comprised of 3 layers of polypropylene. Our Ultra car covers are fully breathable, with ultra-sonically welded seams for added durability. This soft, nonabrasive material will not harm the surface of your vehicle. Designed for indoor and outdoor use, the Ultra Car Cover is designed to be breathable while it protects your vehicle. This improves airflow to reduce condensation and helps prevent mold and mildew. The Ultra cover features a full elastic hem and built-in grommets. This cover is gray in color and includes a storage bag and antenna patch. Designed to fit, this car cover fits cars 200″ L x 60″ W x 51″ H.

Product Features:
  • This car cover fits cars up to 200″ L x 60″ W x 51″ H
  • This car cover is made from a 3 layer, UV resistant material that will protected your vehicle’s paint from fading
  • This car cover is water resistant and features ultrasonically welded seams for extra durability
  • Cover is suitable for short term outdoor protection and long-term indoor protection
  • Elasticized hem and sewn-in grommets for a secure fit
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AutoCraft – Car Cover, Grey, Fits Sedans 15′ 1"-16′ 8", Breathable, Non-Abrasive, Dustproof (Part No.AC213)

Car Cover, Grey, Fits Sedans 15' 1"-16' 8", Breathable, Non-Abrasive, Dustproof

from

$42.99
Autocraft Easy Fit Car Cover offers superior protection against dirt, dust, rain and snow. Protects against acid rain, pollution and color fading UV rays. Durable, reinforced seams and elastic hems. Convenient storage bag included.

Product Features:
  • Lightweight, breathable, non-abrasive fabric
  • Water repellent, protects against mold and mildew
  • Full elastic hem with reinforced grommets
  • Full elastic and double stitched hem to ensure a better fit
  • 2 built-in reinforced grommets and 1 rope are included to keep your cover in place
  • Antenna hole patch included to to provide additional protection from water or dust soak into the hole that you cut for antenna.
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AutoCraft – Car Cover, Blue 3 Layers, Fits Sedans 15′ 1"-16′ 8", Medium-Duty, Water Resistant, Outdoor Use (Part No.AC61)

Car Cover, Blue 3 Layers, Fits Sedans 15' 1"-16' 8", Medium-Duty, Water Resistant, Outdoor Use

from

$69.99
Autocraft Easy Fit Car Cover offers superior protection against dirt, dust, rain and snow. Protects against acid rain, pollution and color fading UV rays. Durable, reinforced seams and elastic hems. Convenient storage bag included.

Product Features:
  • Medium weight, breathable, non-abrasive fabric
  • Water repellent, protects against mold and mildew
  • Full elastic hem with reinforced grommets
  • Full elastic and ultrasonic sewn hem to ensure a better fit and extreme durability
  • 2 built-in reinforced grommets and 1 rope are included to keep your cover in place
  • Antenna hole patch included to to provide additional protection from water or dust soak into the hole that you cut for antenna.
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Rightline Gear – Sport Jr. Car Top Carrier (Part No.100S50)

Sport Jr. Car Top Carrier

from

$109.99
The Rightline Gear Sport Jr Car Top Carrier is 100% waterproof and attaches to vehicles WITH or WITHOUT a roof rack. Attach the carrier’s straps to a vehicle’s roof rack or use the Car Clips to attach the straps to a vehicle’s door frame weather molding. The carrier is made from UV protected PVC Semi-Coated Mesh XT for maximum durability. The intuitive attachment method and simplified design of the Sport Carriers make carrying extra cargo easy. The Sport Jr is the only car top bag made specifically for compact cars.

Product Features:
  • Capacity: 10 cu ft
  • Dimensions: 36″ L x 30″ W x 16″ H
  • Designed for compact cars (can be used on larger vehicles), WITH or WITHOUT a roof rack
  • 100% waterproof with welded seams and SZIP waterproof zipper; no zipper flap required
  • Includes: carrier, (4) attachment straps, (4) car clips, and stuff sack with sewn-in set up guide
  • Includes: carrier, (4) attachment straps, (4) car clips, and stuff sack with sewn-in set up guide
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Rightline Gear – Car Top Duffle Bag (Part No.100D90)

Car Top Duffle Bag

from

$99.99
The Rightline Gear Car Top Duffle Bag is a 100% waterproof gear bag that you can pack, strap to the roof of your vehicle, transport, and then carry wherever you need to go. Attach (1) to (4) Duffle Bags to vehicles WITH or WITHOUT a roof rack. Each bag comes with a removable shoulder strap that can be stored in the bag’s zippered side pocket when not in use. The bag is made from tough PVC Coated Mesh that is re-enforced for strength and UV protected. The Car Top Duffle Bag defines travelling efficiency!

Product Features:
  • Capacity: 4.3 cu ft
  • Dimensions: 36″ L x 16″ W x 13″ H
  • 100% Waterproof with welded seams, urethane coated zippers, and a hook-&-loop-close zipper cover
  • Designed to be used on any size vehicle, WITH or WITHOUT a roof rack
  • Includes: bag, shoulder strap, (2) attachment straps, (4) Car Clips, and set up guide
  • Includes: duffle bag, (2) nylon straps, (4) Car Clips, and complete set up guide
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Rightline Gear – Range Jr Car Top Carrier (Part No.100R50)

Range Jr Car Top Carrier

from

$89.99
The Range Jr Car Top Carrier is weatherproof + and attaches to vehicles WITH or WITHOUT a roof rack. Attach the carrier’s straps to a vehicle’s roof rack or use the Car Clips to attach the straps to a vehicle’s door frame weather molding. The carrier is made from UV protected PVC Semi-Coated Mesh XT for maximum durability. Use the Range Carrier on your next family vacation, backwoods expedition, shopping spree, or move.

Product Features:
  • Dimensions: 36″ L x 32″ W x 15″ H
  • Designed for compact cars (can be used on larger vehicles), WITH or WITHOUT a roof rack
  • Weatherproof + with welded seams and a urethane coated zipper
  • Includes: carrier, (4) attachment straps, (4) car clips, and stuff sack with sewn-in set up guide
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WeatherTech – Molded Fit, Black, Thermoplastic Polyolefin (Tpo), 2 Piece (Part No.449371)

Molded Fit, Black, Thermoplastic Polyolefin (Tpo), 2 Piece

from

$153.99
In the quest for the most advanced concept in floor protection, the talented designers and engineers at WeatherTech have worked tirelessly to develop the most advanced floor protection available today. The WeatherTech FloorLiner accurately and completely lines the interior carpet giving absolute interior protection. The WeatherTech FloorLiner lines the interior carpet up the front, back and even up the sides of the vehicle footwell. Digital laser measurements of interior surfaces offer a consistently perfect fit. A patent pending High-Density Tri-Extruded (HDTE) material allows for a rigid core for strength while offering surface friction to the carpet, as well as tactile feel to the surface Advanced surfacing creates channels that carry fluids and debris to a lower reservoir with further channeling to help minimize fluid movement while driving Once fluids become trapped in the reservoir, away from shoes and clothing, they are easily removed from the WeatherTech FloorLiner over the door sill. No muss-no fuss.

Product Features:
  • Accurately And Completely Lines The Interior Carpet Giving Absolute Interior Protection
  • Lines The Interior Carpet Up The Front, Back And Even Up The Sides Of The Vehicle Footwell
  • Digital Laser Measurements Of Interior Surfaces Offer A Consistently Perfect Fit
  • A Patent Pending High-Density Tri-Extruded Material Allows For A Rigid Core For Strength While Offering Surface Friction To The Carpet, As Well As Tactile Feel To The Surface
  • Advanced Surfacing Creates Channels That Carry Fluids And Debris To A Lower Reservoir With Further Channeling To Help Minimize Fluid Movement While Driving
  • Manufactured From A Proprietary Custom Blended TPO (Thermopolyolefin) That Is Not Only Wear Resistant, But Also Remains Flexible Under Extreme Temperatures
  • Available in fronts, rears, center hump, 3rd and 4th row, and complete sets
  • Available in black, tan, grey and cocoa
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Covercraft – UVS100 Custom Sunscreen – Silver (Part No.UV11575SV)

UVS100 Custom Sunscreen - Silver

from

$117.99
The UVS100 Sunscreen is an affordable way to protect the interior of your vehicle from damaging UV rays as well as adding a level of comfort and protection by reducing the interior temperature of the vehicle on hot days. The sunscreen is custom-fitted so that there is maximum coverage of the windshield area and ease of installation. Sometimes called heat shields, sun shields or UV shields, sunscreens are useful at the beach, work, airport or anywhere you park. This premium quality, custom patterned folding sunscreen also features a soft felt lining on the inside to help protect your interior.

Product Features:
  • Custom fit to the windshield for complete coverage
  • Protect the dash and other interior components from damage by the sun
  • Reduce the interior temperature of the vehicle on hot days
  • The foam core center of the shield acts as an insulator
  • Easy to use and store away when not in use
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Covercraft – UVS100 Custom Sunscreen – Blue Metallic (Part No.UV11575BL)

UVS100 Custom Sunscreen - Blue Metallic

from

$117.99
The UVS100 Sunscreen is an affordable way to protect the interior of your vehicle from damaging UV rays as well as adding a level of comfort and protection by reducing the interior temperature of the vehicle on hot days. The sunscreen is custom-fitted so that there is maximum coverage of the windshield area and ease of installation. Sometimes called heat shields, sun shields or UV shields, sunscreens are useful at the beach, work, airport or anywhere you park. This premium quality, custom patterned folding sunscreen also features a soft felt lining on the inside to help protect your interior.

Product Features:
  • Custom fit to the windshield for complete coverage
  • Protect the dash and other interior components from damage by the sun
  • Reduce the interior temperature of the vehicle on hot days
  • The foam core center of the shield acts as an insulator
  • Easy to use and store away when not in use
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Covercraft – UVS100 Custom Sunscreen, Blue Metallic (Part No.UV11457BL)

UVS100 Custom Sunscreen, Blue Metallic

from

$117.99
The UVS100 Sunscreen is an affordable way to protect the interior of your vehicle from damaging UV rays as well as adding a level of comfort and protection by reducing the interior temperature of the vehicle on hot days. The sunscreen is custom-fitted so that there is maximum coverage of the windshield area and ease of installation. Sometimes called heat shields, sun shields or UV shields, sunscreens are useful at the beach, work, airport or anywhere you park. This premium quality, custom patterned folding sunscreen also features a soft felt lining on the inside to help protect your interior.

Product Features:
  • Custom fit to the windshield for complete coverage
  • Protect the dash and other interior components from damage by the sun
  • Reduce the interior temperature of the vehicle on hot days
  • The foam core center of the shield acts as an insulator
  • Easy to use and store away when not in use
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AutoCraft – Premium Car Cover: Silver/Black, Fits up to 16′ 8" L, All Weather Protection (Part No.AC4624)

Premium Car Cover: Silver/Black, Fits up to 16' 8" L, All Weather Protection

from

$99.99
Autocraft ALUMISOFT 4 layers car cover is designed for all-weather conditions. With the maximum Heat & Sun Reflective Technology, it will reflect UV rays to keep your vehicle cool in the hot day and prevent your car’s interior and exterior from sun damage. Also, 100% water resistant protection while features breathable side panels to keep from moisture build-up. The extra soft inner lining offers added protection against scratches on the car paint. The cover is designed with a full elastic, double stitched hem, and reinforced grommets to ensure a better and secure fit. Include four built-in hook and loop straps on corners for extra security against wind gusts. Bag included for convenient storage.

Product Features:
  • Fits sedans up to 16ft 8in (5.1m)
  • 4 layer premium car cover for ultimate protection in all-weather conditions
  • UV coated design provides maximum protection from sun and reflects heat to keep vehicle cooler
  • 100% water resistant protection
  • Breathable side panel material prevents moisture build-up
  • Soft inner layer prevents scratches
  • Reinforced elastic hem provides snug fit grip around complete vehicle
  • Kit includes storage bag and antenna patch
  • Two reinforced grommets with tie cord and four hook and loop straps on corners for added security against wind gusts
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Covercraft – UVS100 Custom Sunscreen – Silver (Part No.UV11457SV)

UVS100 Custom Sunscreen - Silver

from

$81.99
The UVS100 Sunscreen is an affordable way to protect the interior of your vehicle from damaging UV rays as well as adding a level of comfort and protection by reducing the interior temperature of the vehicle on hot days. The sunscreen is custom-fitted so that there is maximum coverage of the windshield area and ease of installation. Sometimes called heat shields, sun shields or UV shields, sunscreens are useful at the beach, work, airport or anywhere you park. This premium quality, custom patterned folding sunscreen also features a soft felt lining on the inside to help protect your interior.

Product Features:
  • Custom fit to the windshield for complete coverage
  • Protect the dash and other interior components from damage by the sun
  • Reduce the interior temperature of the vehicle on hot days
  • The foam core center of the shield acts as an insulator
  • Easy to use and store away when not in use
See More

2021 S4 Interior Products

WeatherTech – Bucket Seat With Headrest, Polycotton Twill, Cocoa, Single, Semi-Custom (Part No.SPB002CO)

Bucket Seat With Headrest, Polycotton Twill, Cocoa, Single, Semi-Custom

from

$181.99
WeatherTech Seat Protectors are the perfect accessory for those vehicle owners needing an extra step of protection for their rear vehicle seating. A much needed accessory for the family road trip warriors or pet car ride companions to prevent scratches, damage or spills from ruining the seat surface.

Product Features:
  • Made From A Polycotton Drill Fabric That Features A Durable Water Repellent Finish That ll Combat Any Juice Box Spill, Cereal Crumbs Or Pet Mess
  • Engineered With An Extra Layer Of Nylon Lining, Which Helps To Further Protect The Covered Seat
  • The Seat Protector Stays In Place With The Help Of Durable Straps, Specialty Inserts And A Non-Slip Bottom
  • Semi┐custom To Fit The Size And Type Of Vehicle
  • Machine Washable, Making It An Easy Accessory For Any Family
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Dashmat – Dashboard Cover (Part No.72134-01-25)

Dashboard Cover

from

$106.99
Dashboard Cover

Dashmat – Dashboard Cover (Part No.2134-01-47)

Dashboard Cover

from

$101.99
Dashboard Cover

Dashmat – Dashboard Cover (Part No.2134-01-76)

Dashboard Cover

from

$101.99
Dashboard Cover

Dashmat – SuedeMat Custom Dash Cover by DashMat (Part No.82134-01-76)

SuedeMat Custom Dash Cover by DashMat

from

$59.99
SuedeMat Custom Dash Cover by DashMat