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Audi B5 Engine Intake Parts

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Mass Air Flow Sensor (MAF)

ES#252386 - 077133471K - Mass Air Flow Sensor (MAF) - Restore fuel economy and performance - Bosch - Audi

Restore fuel economy and performance We Price Match - Give Us A Call or Chat!
OEM RS4, larger diameter housing than Stock S4 allows increased air flow on high boosted engines

Brand:
Bosch - Corporate Logo
ES#:
252386
Mfg#:
077133471K
In Stock
$280.99

This product was last offered at the strikethrough price on
04-02-2026

$218.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Throttle Body Assembly - priced each

ES#284935 - 079133062C - Throttle Body Assembly - priced each - Includes the throttle position sensor - Genuine Volkswagen Audi - Audi Volkswagen

Includes the throttle position sensor

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
284935
Mfg#:
079133062C
Ships in 4 Business Days
5% off MSRP

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

$1453.99

This product was last offered at the strikethrough price on
08-31-2026

$1384.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet PCV Check Valve

ES#2864536 - 034-101-2002 - Billet PCV Check Valve - Located under the intake manifold - 034Motorsport - Audi Volkswagen

Located under the intake manifold 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
2864536
Mfg#:
034-101-2002
In Stock
$51.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

K&N Air Filter Recharge Kit - Squeeze

ES#517994 - 99-5050 - K&N Air Filter Recharge Kit - Squeeze - Preserve & maintain your air filter for a lifetime like it was designed to be used - K&N - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Preserve & maintain your air filter for a lifetime like it was designed to be used

Brand:
K&N - Corporate Logo
ES#:
517994
Mfg#:
99-5050
In Stock
$18.99 USD
Free Shipping
on orders $49 and up

Silicone Y-Pipe Hose Pair - RS4

ES#2864560 - 034-108-3000 - Silicone Y-Pipe Hose Pair - RS4 - Direct replica of OEM RS4 hoses, but in reinforced silicone for long life and abuse resistance - 034Motorsport - Audi

Direct replica of OEM RS4 hoses, but in reinforced silicone for long life and abuse resistance 2X Entries Into Our F80 M3 Sweepstakes
To be used with RS4 Y-pipe and inlet pipes only

Brand:
034Motorsport - Corporate Logo
ES#:
2864560
Mfg#:
034-108-3000
In Stock
$210.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Vacuum System Repair Kit

ES#279586 - 06A198011B - Vacuum System Repair Kit - Restore engine performance with this new kit - Genuine Volkswagen Audi - Audi Volkswagen

Restore engine performance with this new kit

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
279586
Mfg#:
06A198011B
Ships in 2 Business Days
17% off MSRP

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

$178.32

This product was last offered at the strikethrough price on
09-12-2026

$148.36 USD
Free Shipping

Vacuum System Repair Kit

ES#2515457 - 51731257971KT - Vacuum System Repair Kit - Kit includes vacuum T fittings, vacuum line, and one way check valve - Assembled By ECS - Audi Volkswagen

Kit includes vacuum T fittings, vacuum line, and one way check valve 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2515457
Mfg#:
51731257971KT
In Stock
ON SALE!
$47.99

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

$46.58 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

SXV T9302 Recirculating Bypass Valve

ES#4907811 - T9302 - SXV T9302 Recirculating Bypass Valve - Direct-fit performance solution for the weak factory diverter valve - Go Fast Bits - Audi Volkswagen Porsche

Direct-fit performance solution for the weak factory diverter valve

Brand:
Go Fast Bits - Corporate Logo
ES#:
4907811
Mfg#:
T9302
In Stock
$178.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

1.8T Billet Aluminum Fuel Injector Cup Replacement Kit

ES#4920295 - 045960LA03KT - 1.8T Billet Aluminum Fuel Injector Cup Replacement Kit - Upgrade to heavy-duty billet aluminum construction for maximum durability! - ECS - Audi Volkswagen

Upgrade to heavy-duty billet aluminum construction for maximum durability! 10X Entries Into Our F80 M3 Sweepstakes
For Vehicles with Engine Codes ATW and AWM.

Brand:
ECS - Corporate Logo
ES#:
4920295
Mfg#:
045960LA03KT
Back Ordered
ON SALE! SAVE 20%
$172.99

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

$138.39 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Pressure Control Valve (PCV) - (19mm)

ES#2804355 - 034129101BKT1 - Pressure Control Valve (PCV) - (19mm) - Located on the turbo inlet pipe. Includes hose clamps - Assembled By ECS - Audi Volkswagen

Located on the turbo inlet pipe. Includes hose clamps 10X Entries Into Our F80 M3 Sweepstakes
Engine codes AEB & ATW

Brand:
Assembled By ECS - Corporate Logo
ES#:
2804355
Mfg#:
034129101BKT1
In Stock
ON SALE! SAVE 18%
$38.99

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

$31.98 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Unitronic 3" Air Filter (Gen 1)

ES#4362289 - UH003-IN4 - Unitronic 3" Air Filter (Gen 1) - Unitronic - Audi Volkswagen

Brand:
Unitronic - Corporate Logo
ES#:
4362289
Mfg#:
UH003-IN4
Back Ordered
$54.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Stainless Steel Bi-Pipe Set - Wrinkle Black

ES#3183538 - 034-108-5001-BLK - Stainless Steel Bi-Pipe Set - Wrinkle Black - Replace your restrictive OEM Audi bipipes with 034Motorsport's High-Flow Bi-pipe Set for the 2.7T! - 034Motorsport - Audi

Replace your restrictive OEM Audi bipipes with 034Motorsport's High-Flow Bi-pipe Set for the 2.7T! 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3183538
Mfg#:
034-108-5001-BLK
Ships in 2 Business Days
$301.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Silicone Y-Pipe Hose Pair - Big Bore

ES#2864561 - 034-108-3001 - Silicone Y-Pipe Hose Pair - Big Bore - Allows a full 2.5" diameter transition to the lower RS4 inlet pipes - 034Motorsport - Audi

Allows a full 2.5" diameter transition to the lower RS4 inlet pipes 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
2864561
Mfg#:
034-108-3001
In Stock
$296.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

N80 Purge Valve

ES#283789 - 078133517H - N80 Purge Valve - Common cure for DTC P0441 - Genuine Volkswagen Audi - Audi

Common cure for DTC P0441

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
283789
Mfg#:
078133517H
In Stock
5% off MSRP

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

$196.65

This product was last offered at the strikethrough price on
09-12-2026

$187.54 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Intake Parts

All engine performance begins with engine breathing. That's why we have a large inventory of stock and performance intake manifolds, and related intake manifold parts, including MAF sensors, intake hoses, cold air intake systems, and engine air filters for both normally aspirated and forced induction engines. To perform it's best, your engine needs to breathe clean and breathe free.

Let us help you find the parts that fit your Audi

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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