Audi C4 S6 Quattro 20v T > Engine

Intake

Engine > Intake >

Air Filter

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AFE

Pro 5 R Drop In Filter

When maximum airflow is critical, featuring 5 layers of cotton gauze filtration material

Brand:

ES#:518087

Mfg#: 30-10045

Qty:

$49.95

Pro Dry S Drop In Filter

OIl free dry synthetic media, allowing significant airflow over stock paper media

Brand:

ES#:518098

Mfg#: 31-10045

Qty:

$48.95

K&N

Performance Air Filter

Drop in replacement

Brand:

ES#:1325

Mfg#: 332029

Qty:

$46.07

Cleaner

Pro 5 R Restore Kit

Used for Pro 5 R filters

Brand:

ES#:517882

Mfg#: 90-50501

Qty:

$9.92

Pro Dry S Restore Kit

Used for Pro Dry S filters

Brand:

ES#:517881

Mfg#: 90-59999

Qty:

$9.95

Pro Guard 7 Restore Kit (Gold)

Used for Pro Guard 7 filters

Brand:

ES#:519611

Mfg#: 90-50500

Qty:

$9.92

Air Filter

Brand:

ES#:252835

Mfg#: 191129620

Qty:

$10.87

Air Filter. OE

Either Mann or Mahle, both German OEM suppliers

Brand:

ES#:1324

Mfg#: C31152

Qty:

$9.53

OEM Air Filter

The best filter for your car

Brand:

ES#:261568

Mfg#: 191129620

Qty:

$14.21

Engine > Intake >

Diverter Valve

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OEM - Forge Diverter Valves - ECS Blow Off Valve

The diverter valve (DV) is a pathway for boost when it is not being used by your engine. Whenever the throttle body is closed, like during shifts or deceleration, the boost needs an escape route. If the boost cannot escape during these times, it can back up and cause shocks to the turbo. A Blow Off Valve (BOV) performs the same task as a DV, but instead of returning the boosted air back into the intake, it vents it the the atmosphere.

APR