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Audi S4 Engine Parts & Accessories

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APR Iridium Pro Spark Plugs With Ignition Coils - Set Of 6

ES#4905912 - Z1004081W6ICKT - APR Iridium Pro Spark Plugs With Ignition Coils - Set Of 6 - Unleash Your Engine's Potential with APR - APR - Audi Porsche

Unleash Your Engine's Potential with APR Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
APR - Corporate Logo
ES#:
4905912
Mfg#:
Z1004081W6ICKT
In Stock
$479.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Timing Chain Kit - With Service Tools

ES#4362455 - 079109229KT13 - Timing Chain Kit - With Service Tools - Includes the upgraded RS4 lower metal guide rail, OEM, iwis and Bremmen chains, tensioners, and guides - The essentials necessary to get the job done! - Assembled By ECS - Audi

Includes the upgraded RS4 lower metal guide rail, OEM, iwis and Bremmen chains, tensioners, and guides - The essentials necessary to get the job done! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4362455
Mfg#:
079109229KT13
In Stock
ON SALE! SAVE 23%
$1548.99

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

$1188.86 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Performance Baffled Oil Catch Can System - Audi B8 S4/S5 3.0T

ES#3142968 - 016632ecs01KT - Performance Baffled Oil Catch Can System - Audi B8 S4/S5 3.0T - Keep your B8 S4/S5 3.0T intake tract clean and carbon free - ECS - Audi

Keep your B8 S4/S5 3.0T intake tract clean and carbon free 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3142968
Mfg#:
016632ECS01KT
In Stock
ON SALE! SAVE 20%
$682.99

This product was last offered at the strikethrough price on
06-13-2026

$546.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High Pressure Fuel Pump

ES#3419174 - 07L127026AK - High Pressure Fuel Pump - Located on the left cylinder head - Hitachi - Audi Volkswagen

Located on the left cylinder head

Brand:
Hitachi - Corporate Logo
ES#:
3419174
Mfg#:
07L127026AK
In Stock
$851.99

This product was last offered at the strikethrough price on
04-30-2026

$520.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Spark Plugs - Set Of Six

ES#3691957 - 06m905606fKT - Spark Plugs - Set Of Six - Keep your engine running strong - Genuine Volkswagen Audi - Audi

Keep your engine running strong

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3691957
Mfg#:
06M905606FKT
In Stock
$87.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport PCV Breather Hose - EA839 3.0T

ES#4849697 - 034-101-3108 - 034Motorsport PCV Breather Hose - EA839 3.0T - Upgrade your failure-prone PCV breather hose with the high-performance, reliable 034Motorsport PCV Breather Hose - 034Motorsport - Audi

Upgrade your failure-prone PCV breather hose with the high-performance, reliable 034Motorsport PCV Breather Hose

Brand:
034Motorsport - Corporate Logo
ES#:
4849697
Mfg#:
034-101-3108
Back Ordered
Auto Notify
$249.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

BKR9EIX Spark Plugs - Set Of Six

ES#3991431 - bkr9eixKT - BKR9EIX Spark Plugs - Set Of Six - The NGK Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling properties. - NGK - Audi

The NGK Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling properties. We Price Match - Give Us A Call or Chat!
Recommended to be used by various tuners when paired with performance software - recommended gap of .024” +/- .002”

Brand:
NGK - Corporate Logo
ES#:
3991431
Mfg#:
BKR9EIXKT
In Stock
$48.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

FDS Front-Mount Intercooler Kit - Silver

ES#3470702 - IETPCK1 - FDS Front-Mount Intercooler Kit - Silver - Increase horsepower and eliminate heatsoak - Drop-in intercooler requires no cutting, trimming, or mods! - Integrated Engineering - Audi

Increase horsepower and eliminate heatsoak - Drop-in intercooler requires no cutting, trimming, or mods! 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
3470702
Mfg#:
IETPCK1
Ships in 4 Business Days
$1034.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

IE Cat-Back Exhaust System - B9/B9.5 S4

ES#4709360 - IEEXCK5 - IE Cat-Back Exhaust System - B9/B9.5 S4 - Delivers a truly aggressive exhaust note without any annoying drone or rasp - Integrated Engineering - Audi

Delivers a truly aggressive exhaust note without any annoying drone or rasp 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
4709360
Mfg#:
IEEXCK5
In Stock
$1687.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 (S4/S5/SQ5) – Pure750 Upgraded Turbocharger

ES#4642701 - PURE-30T750KT - Audi B9 (S4/S5/SQ5) Pure750 Upgraded Turbocharger - Crank up your B9 over 700+awhp with this kit! Price includes a $800.00 refundable core charge. - Pure Turbos - Audi

Crank up your B9 over 700+awhp with this kit! Price includes a $800.00 refundable core charge.

Brand:
Pure Turbos - Corporate Logo
ES#:
4642701
Mfg#:
PURE-30T750KT
Ships on Aug 21, 2026
Auto Notify
$3426.99

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

$3300.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

IE Performance Cast Downpipe

ES#4473979 - IEEXCK3 - IE Performance Cast Downpipe - Features a TIG-welded 304 stainless and investment cast body and offers gains up to 45HP & 41TQ - Integrated Engineering - Audi

Features a TIG-welded 304 stainless and investment cast body and offers gains up to 45HP & 41TQ 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
4473979
Mfg#:
IEEXCK3
In Stock
$1099.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Heat Exchanger Kit - Bolt-On - Performance Multi-Pass - Black

ES#4442371 - PMPHX30T40TBLACK - Heat Exchanger Kit - Bolt-On - Performance Multi-Pass - Black - Installation of this kit is now easier than ever, without the need of removing the crash bar to drill holes for bracket mounting. - JH Motorsports - Audi

Installation of this kit is now easier than ever, without the need of removing the crash bar to drill holes for bracket mounting.

Brand:
JH Motorsports - Corporate Logo
ES#:
4442371
Mfg#:
PMPHX30T40TBLACK
Ships in 4 Business Days
$699.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

PCV Breather Hose/Turbo Inlet Manifold

ES#3678755 - 06M129041 - PCV Breather Hose/Turbo Inlet Manifold - Receiving an engine code calling out a boost leak, it may be your breather hose - Genuine Volkswagen Audi - Audi

Receiving an engine code calling out a boost leak, it may be your breather hose

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3678755
Mfg#:
06M129041
In Stock
7% off MSRP

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

$188.33

This product was last offered at the strikethrough price on
07-23-2026

$175.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

B9 S4 3.0T Center X-Pipe

ES#3521607 - 024365ecs01KT - B9 S4 3.0T Center X-Pipe - Sound great and save weight! Eliminate the center resonator on your OE system for a more aggressive exhaust note - ECS - Audi

Sound great and save weight! Eliminate the center resonator on your OE system for a more aggressive exhaust note 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3521607
Mfg#:
024365ECS01KT
In Stock
ON SALE! SAVE 25%
$438.99

This product was last offered at the strikethrough price on
06-13-2026

$329.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Parts & Accessories

Whether you're maintaining or repairing your stock engine or looking for added horsepower, we have one of the most comprehensive inventories of engine parts and accessories for German cars. From hard engine parts like connecting rods, pistons, cylinder heads, short blocks, and engine timing parts to performance engine software upgrades; we have you covered.

Let us help you find the parts that fit your Audi

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Manufacturer names and/or part numbers are used only for identification purposes.

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