SEARCH BY VEHICLE:
Enter Vehicle Year Make Model

Specify your vehicle's year, make and model to guarantee fit.

Year
Make
Model
Options
Drivetrain

2021 Audi S4 Parts

What year is your
Free Same Day Shipping

2021 Audi S4

Filter Results
  • Notify When Available
    Ignition Coil

    Replaces 2021 Audi S4 V6 3.0L Ignition Coil TRQ ICA64213

    Brand: TRQ
    - ICA64213

    • Ignition Coil Type: Direct Replacement
    • Ignition Coil Color: Black
    $36.95
    Save 26%
    List $49.95 Save $13.00

    Guaranteed to Fit 2021 Audi S4

    Guaranteed to Fit 2021 Audi S4

    Replaces 2021 Audi S4 V6 3.0L Ignition Coil TRQ ICA64213

    Ignition Coil
    Brand: TRQ - ICA64213
    • Ignition Coil Type: Direct Replacement
    • Ignition Coil Color: Black
    $36.95
    Save 26%
    List $49.95 Save $13.00

    Guaranteed to Fit 2021 Audi S4

    Guaranteed to Fit 2021 Audi S4

  • Notify When Available
    Kit image

    Replaces 2021 Audi S4 Rear Driver & Passenger Side 2 Piece Brake Hose Set TRQ BLA80621

    Brand: TRQ
    - BLA80621

    • Kit Includes: (1) Rear Driver Side Replacement Brake Hose
    • Kit Includes: (1) Rear Passenger Side Replacement Brake Hose
    • Quantity: 2 Piece
    $64.95
    Save 26%
    List $87.95 Save $23.00

    Guaranteed to Fit 2021 Audi S4

    Guaranteed to Fit 2021 Audi S4

    Replaces 2021 Audi S4 Rear Driver & Passenger Side 2 Piece Brake Hose Set TRQ BLA80621

    Kit image
    Brand: TRQ - BLA80621
    • Kit Includes: (1) Rear Driver Side Replacement Brake Hose
    • Kit Includes: (1) Rear Passenger Side Replacement Brake Hose
    • Quantity: 2 Piece
    $64.95
    Save 26%
    List $87.95 Save $23.00

    Guaranteed to Fit 2021 Audi S4

    Guaranteed to Fit 2021 Audi S4

  • Notify When Available
    Ignition Coil

    Replaces 2021 Audi S4 V6 3.0L Ignition Coil TRQ ICA32536

    Brand: TRQ
    - ICA32536

    • Ignition Coil Type: Direct Replacement
    • Ignition Coil Color: Black
    $39.95
    Save 22%
    List $50.95 Save $11.00

    Guaranteed to Fit 2021 Audi S4

    Guaranteed to Fit 2021 Audi S4

    Replaces 2021 Audi S4 V6 3.0L Ignition Coil TRQ ICA32536

    Ignition Coil
    Brand: TRQ - ICA32536
    • Ignition Coil Type: Direct Replacement
    • Ignition Coil Color: Black
    $39.95
    Save 22%
    List $50.95 Save $11.00

    Guaranteed to Fit 2021 Audi S4

    Guaranteed to Fit 2021 Audi S4

  • Notify When Available
    Picture coming soon

    Replaces 2021 Audi S4 Front 6 Piece Steering & Suspension Kit TRQ PSA16722

    Brand: TRQ
    - PSA16722

    • Kit Includes: (2) Front Sway Bar Links
    • Kit Includes: (2) Front Lower Ball Joints
    • Kit Includes: (2) Front Outer Tie Rods
    • Quantity: 6 Piece
    $104.95

    Guaranteed to Fit 2021 Audi S4

    Guaranteed to Fit 2021 Audi S4

    Replaces 2021 Audi S4 Front 6 Piece Steering & Suspension Kit TRQ PSA16722

    Picture coming soon
    Brand: TRQ - PSA16722
    • Kit Includes: (2) Front Sway Bar Links
    • Kit Includes: (2) Front Lower Ball Joints
    • Kit Includes: (2) Front Outer Tie Rods
    • Quantity: 6 Piece
    $104.95

    Guaranteed to Fit 2021 Audi S4

    Guaranteed to Fit 2021 Audi S4

  • Notify When Available
    Picture coming soon

    Replaces 2021 Audi S4 Front 4 Piece Suspension Kit TRQ PSA11695

    Brand: TRQ
    - PSA11695

    • Kit Includes: (2) Front Sway Bar Links
    • Kit Includes: (2) Front Lower Ball Joints
    • Quantity: 4 Piece
    $67.95

    Guaranteed to Fit 2021 Audi S4

    Guaranteed to Fit 2021 Audi S4

    Replaces 2021 Audi S4 Front 4 Piece Suspension Kit TRQ PSA11695

    Picture coming soon
    Brand: TRQ - PSA11695
    • Kit Includes: (2) Front Sway Bar Links
    • Kit Includes: (2) Front Lower Ball Joints
    • Quantity: 4 Piece
    $67.95

    Guaranteed to Fit 2021 Audi S4

    Guaranteed to Fit 2021 Audi S4

  • Notify When Available
    Picture coming soon

    Replaces 2021 Audi S4 Driver & Passenger Side 2 Piece Trunk Lid Lift Support Set TRQ GSA23338

    Brand: TRQ
    - GSA23338

    • Kit Includes: (2) Trunk Lid Lift Supports
    • Quantity: 2 Piece
    $44.95

    Guaranteed to Fit 2021 Audi S4

    Guaranteed to Fit 2021 Audi S4

    Replaces 2021 Audi S4 Driver & Passenger Side 2 Piece Trunk Lid Lift Support Set TRQ GSA23338

    Picture coming soon
    Brand: TRQ - GSA23338
    • Kit Includes: (2) Trunk Lid Lift Supports
    • Quantity: 2 Piece
    $44.95

    Guaranteed to Fit 2021 Audi S4

    Guaranteed to Fit 2021 Audi S4

  • Notify When Available

    VIDEO

    Inner Tie Rod Tool

    Heavy Duty Inner Tie Rod Tool

    207 reviews
    Brand: TRQ
    - TLK01002

    • Socket Drive: 3/8 in. Drive
    • Product Grade: Heavy Duty
    $23.95
    Save 17%
    List $28.95 Save $5.00

    Heavy Duty Inner Tie Rod Tool

    VIDEO

    Inner Tie Rod Tool
    207 reviews
    Brand: TRQ - TLK01002
    • Socket Drive: 3/8 in. Drive
    • Product Grade: Heavy Duty
    $23.95
    Save 17%
    List $28.95 Save $5.00
  • Notify When Available
    Spark Plug Socket

    Spark Plug Socket

    13 reviews
    Brand: TRQ
    - TLK06456

    • Socket Drive: 3/8 in. Drive
    • Socket Size: 5/8 in
    $10.95
    Save 8%
    List $11.95 Save $1.00

    Spark Plug Socket

    Spark Plug Socket
    13 reviews
    Brand: TRQ - TLK06456
    • Socket Drive: 3/8 in. Drive
    • Socket Size: 5/8 in
    $10.95
    Save 8%
    List $11.95 Save $1.00
  • Notify When Available

    VIDEO

    Interior Trim Removal Kit

    Interior Trim Removal Kit

    96 reviews
    Brand: TRQ
    - TLK01001
    $39.95
    Save 20%
    List $49.95 Save $10.00

    Interior Trim Removal Kit

    VIDEO

    Interior Trim Removal Kit
    96 reviews
    Brand: TRQ - TLK01001
    $39.95
    Save 20%
    List $49.95 Save $10.00
  • Notify When Available

    VIDEO

    Disc Brake Pad Spreader

    Disc Brake Pad Spreader

    184 reviews
    Brand: TRQ
    - TLK01003

    $15.95
    Save 31%
    List $22.95 Save $7.00

    Disc Brake Pad Spreader

    VIDEO

    Disc Brake Pad Spreader
    184 reviews
    Brand: TRQ - TLK01003
    $15.95
    Save 31%
    List $22.95 Save $7.00
1

...

4 5 6 7 8

...

16
Close



Audi is a registered trademark of Audi AG. 1A Auto is not affiliated with or sponsored by Audi or Audi AG. See all trademarks.
Same Day Shipping

Need your part faster? Choose expedited shipping at checkout.

Guaranteed To Fit

Highest quality, direct fit replacement auto parts enforced to the strictest product standards.

USA Customer Support

Exceeding customers' expectations, our team of passionate auto enthusiasts are here to help.

Instructional Video Library

Thousands of how-to auto repair videos to guide you step-by-step through your repair.

Go To Top
Enter Vehicle Year Make Model

Specify your vehicle's year, make and model to guarantee fit.

Year
Make
Model
Options
Drivetrain

This part doesn't fit a . Select from parts that fit.

Show parts that fit