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Audi S4 Performance Air Filters

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IE Replacement 5" Air Filter For IE Intake Kits

ES#3177923 - IEINCC1-3A - IE Replacement 5" Air Filter For IE Intake Kits - This is a direct replacement filter for all IE cold air intakes with a 5" velocity stack on the heat shield. This filter is used on the majority of all IE intakes. - Integrated Engineering - Audi Volkswagen

This is a direct replacement filter for all IE cold air intakes with a 5" velocity stack on the heat shield. This filter is used on the majority of all IE intakes. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
3177923
Mfg#:
IEINCC1-3A
Back Ordered
Auto Notify
$54.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Drop In Replacement Air Filter

ES#3988613 - E-0646 - Drop In Replacement Air Filter - High-Flow cotton gauze filter designed to be a performer, while lasting a lifetime - K&N - Audi

High-Flow cotton gauze filter designed to be a performer, while lasting a lifetime affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
K&N - Corporate Logo
ES#:
3988613
Mfg#:
E-0646
In Stock
$83.99

This product was last offered at the strikethrough price on
01-20-2026

$79.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS High Flow Luft-Technik "Oiled" Air Filter (3 5/8" inlet)

ES#3086103 - 003675ecs04aKT - ECS High Flow Luft-Technik "Oiled" Air Filter (3 5/8" inlet) - High flow, reusable air filter. Used as a replacement filter to an ECS intake system or for your custom intake project. 5.25" Base OD / 7" Filter Height / 4.5" Top OD - ECS - Audi BMW Volkswagen

High flow, reusable air filter. Used as a replacement filter to an ECS intake system or for your custom intake project. 5.25" Base OD / 7" Filter Height / 4.5" Top OD affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Replacement air filter for ECS Luft-Technik air intake kits

Brand:
ECS - Corporate Logo
ES#:
3086103
Mfg#:
003675ECS04AKT
In Stock
ON SALE! SAVE 35%
$71.99

This product was last offered at the strikethrough price on
05-02-2026

$46.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Exact-Fit High Flow Air Filter - Dry

ES#4475341 - 012054LA61-DRY - ECS Exact-Fit High Flow Air Filter - Dry - High flow filter replacement to get your engine breathing better than new! - ECS - Audi

High flow filter replacement to get your engine breathing better than new! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4475341
Mfg#:
012054LA61-DRY
In Stock
ON SALE! SAVE 40%
$80.99

This product was last offered at the strikethrough price on
05-02-2026

$48.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

IE Harsh Climate 5" Oiled Filter & Sock Kit

ES#4465497 - IEINUU2 - IE Harsh Climate 5" Oiled Filter & Sock Kit - Direct replacement filter for all popular IE air intake kits with a 5" velocity stack. - Integrated Engineering - Audi Volkswagen

Direct replacement filter for all popular IE air intake kits with a 5" velocity stack. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
For vehicles that already have an IE intake

Brand:
Integrated Engineering - Corporate Logo
ES#:
4465497
Mfg#:
IEINUU2
In Stock
$76.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Intake System

ES#4835388 - B930TINT - Performance Intake System - maximize your airflow with more power, torque, and incredible induction sounds! - ARM Motorsports - Audi

maximize your airflow with more power, torque, and incredible induction sounds! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
ARM Motorsports - Corporate Logo
ES#:
4835388
Mfg#:
B930TINT
In Stock
$227.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Universal High Flow Performance Air Filter - Dry (2.5" inlet)

ES#3697634 - 003675ECS03-02 - Universal High Flow Performance Air Filter - Dry (2.5" inlet) - High flow, reusable air filter. Used as a replacement filter to an ECS intake system or for your custom intake project. 4.5" Base OD / 6" Filter Height / 3.5" Top OD - ECS - Audi BMW Volkswagen

High flow, reusable air filter. Used as a replacement filter to an ECS intake system or for your custom intake project. 4.5" Base OD / 6" Filter Height / 3.5" Top OD affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3697634
Mfg#:
003675ECS03-02
In Stock
ON SALE! SAVE 30%
$56.99

This product was last offered at the strikethrough price on
05-02-2026

$39.89 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal performance air filter

ES#1876583 - E-2021 - Universal performance air filter - Bolt on better performance and fuel efficiency. - K&N - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Bolt on better performance and fuel efficiency. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
K&N - Corporate Logo
ES#:
1876583
Mfg#:
E-2021
In Stock
$68.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Exact-Fit High Flow Air Filter - Dry

ES#4461008 - 012054LA07-DRY - ECS Exact-Fit High Flow Air Filter - Dry - High flow filter replacement to get your engine breathing better than new! - ECS - Audi

High flow filter replacement to get your engine breathing better than new! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4461008
Mfg#:
012054LA07-DRY
In Stock
ON SALE! SAVE 53%
$81.99

This product was last offered at the strikethrough price on
05-02-2026

$38.90 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Exact-Fit High Flow Air Filter - Dry

ES#4461006 - 012054LA18-DRY - ECS Exact-Fit High Flow Air Filter - Dry - High flow filter replacement to get your engine breathing better than new! - ECS - Audi Volkswagen

High flow filter replacement to get your engine breathing better than new! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4461006
Mfg#:
012054LA18-DRY
In Stock
ON SALE! SAVE 20%
$69.99

This product was last offered at the strikethrough price on
05-02-2026

$55.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

SuperDuper Air Filter, 5" Inlet

ES#4696150 - 034-108-B029 - SuperDuper Air Filter, 5" Inlet - A replacement for 034's popular S34 Intake System - 034Motorsport - Audi

A replacement for 034's popular S34 Intake System affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4696150
Mfg#:
034-108-B029
In Stock
$114.00 USD
Free Shipping

Racingline High-Flow Air Filter

ES#3570408 - VWR1141S4 - Racingline High-Flow Air Filter - Set your 3.0 TFSI turbocharged engine free by allowing it to breathe better and operate more efficiently! - Racingline - Audi

Set your 3.0 TFSI turbocharged engine free by allowing it to breathe better and operate more efficiently! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Racingline - Corporate Logo
ES#:
3570408
Mfg#:
VWR1141S4
Ships in 2 Business Days
$171.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

APR High Flow Intake Filter

ES#4690591 - RF100026 - APR High Flow Intake Filter - Flow-bench optimized to provide maximum performance with your factory intake system! - APR - Audi

Flow-bench optimized to provide maximum performance with your factory intake system! Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
APR - Corporate Logo
ES#:
4690591
Mfg#:
RF100026
Ships in 1-2 days
11% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$63.99

This product was last offered at the strikethrough price on
06-06-2026

$56.99 USD
Free Shipping

Pro Dry S Air Filter

ES#518084 - 31-10044 - Pro Dry S Air Filter - Higher flow, higher performance - oil-free, washable and reuseable! - AFE - Audi BMW Volkswagen

Higher flow, higher performance - oil-free, washable and reuseable! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AFE - Corporate Logo
ES#:
518084
Mfg#:
31-10044
In Stock
20% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$121.99

This product was last offered at the strikethrough price on
06-06-2026

$97.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Engine Air Filter 33-2209

ES#3898 - 332209 - Performance Engine Air Filter 33-2209 - Drop-in high flow replacement for your vehicle - K&N - Audi

Drop-in high flow replacement for your vehicle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
K&N - Corporate Logo
ES#:
3898
Mfg#:
332209
In Stock
$74.99

This product was last offered at the strikethrough price on
03-16-2026

$68.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

MagnumFLOW Pro-Dry Air Filter

ES#2972481 - 11-10121 - MagnumFLOW Pro-Dry Air Filter - Oil free dry synthetic media, allowing significant airflow over stock paper media - AFE - Audi

Oil free dry synthetic media, allowing significant airflow over stock paper media affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AFE - Corporate Logo
ES#:
2972481
Mfg#:
11-10121
In Stock
20% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$117.99

This product was last offered at the strikethrough price on
04-09-2026

$94.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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