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Audi S4 CTS Intake Systems

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CTS Turbo Air Intake System - True 3.5" Velocity Stack

ES#4017702 - CTS-IT-300R - CTS Turbo Air Intake System - True 3.5" Velocity Stack - NEW UPDATED DESIGN! True 3.5 intake for maximum airflow - 3.5" mandrel bent piping with huge 6 velocity stack air filter! - CTS - Audi

NEW UPDATED DESIGN! True 3.5″ intake for maximum airflow - 3.5" mandrel bent piping with huge 6″ velocity stack air filter!

Brand:
CTS - Corporate Logo
ES#:
4017702
Mfg#:
CTS-IT-300R
In Stock
ON SALE! SAVE 15%
$329.99

This product was last offered at the strikethrough price on
07-10-2026

$280.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance High-Flow Air Intake System - 6" Velocity Stack

ES#4045629 - CTS-IT-290R - Performance High-Flow Air Intake System - 6" Velocity Stack - Designed to work in conjunction with the OEM air scoop to seamlessly force cold air into the system - Flowed through a massive 6" velocity stack filter! - CTS - Audi

Designed to work in conjunction with the OEM air scoop to seamlessly force cold air into the system - Flowed through a massive 6" velocity stack filter!

Brand:
CTS - Corporate Logo
ES#:
4045629
Mfg#:
CTS-IT-290R
Back Ordered
Auto Notify
ON SALE! SAVE 15%
$299.99

This product was last offered at the strikethrough price on
07-10-2026

$254.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Diverter Valve

ES#2862879 - CTSDV0005 - Billet Diverter Valve - Keep your turbo boosting like it should - CTS - Audi Volkswagen

Keep your turbo boosting like it should

Brand:
CTS - Corporate Logo
ES#:
2862879
Mfg#:
CTSDV0005
Ships in 8 Business Days
ON SALE! SAVE 20%
$149.99

This product was last offered at the strikethrough price on
07-10-2026

$119.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

3.5" Cone Style Air Filter

ES#4304100 - CTS-AF-250 - 3.5" Cone Style Air Filter - Replacement filter for CTS-IT-300R and CTS-IT-938 - CTS - Audi

Replacement filter for CTS-IT-300R and CTS-IT-938

Brand:
CTS - Corporate Logo
ES#:
4304100
Mfg#:
CTS-AF-250
Ships in 8 Business Days
ON SALE! SAVE 20%
$99.99

This product was last offered at the strikethrough price on
07-10-2026

$79.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
Scratch and Dent Item

Performance High-Flow Air Intake System - 6" Velocity Stack *Scratch And Dent*

ES#5470428 - CTSIT290RSD - Performance High-Flow Air Intake System - 6" Velocity Stack *Scratch And Dent* - Designed to work in conjunction with the OEM air scoop to seamlessly force cold air into the system - Flowed through a massive 6" velocity stack filter! - Scratch & Dent - Audi

Designed to work in conjunction with the OEM air scoop to seamlessly force cold air into the system - Flowed through a massive 6" velocity stack filter! ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product!

Brand:
Scratch & Dent - Corporate Logo
ES#:
5470428
Mfg#:
CTSIT290RSD
Ships in 1 Business Day
Limited Qty Sale
$299.99

This product was last offered at the strikethrough price on
07-21-2026

$263.99 USD
Free Shipping
on orders $49 and up

B8 S4/S5 SAI Breather Bracket & Adapter

ES#4900393 - CTS-HW-113&114 - B8 S4/S5 SAI Breather Bracket & Adapter - Looking to clean up the engine bay of your B8/B8.5 Audi S4 or S5? - CTS - Audi

Looking to clean up the engine bay of your B8/B8.5 Audi S4 or S5?

Brand:
CTS - Corporate Logo
ES#:
4900393
Mfg#:
CTS-HW-113&114
Special Order: No Guaranteed ETA
ON SALE! SAVE 15%
$119.99

This product was last offered at the strikethrough price on
07-10-2026

$101.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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