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Audi B9 A4 Quattro 2.0T

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Audi B9 A4 Quattro 2.0T Engine Parts & Accessories

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Stage 1 Software Upgrade

ES#3146864 - DPP-2.0T-MLB-SP - Stage 1 Software Upgrade - Higher peak figures of 306-314 HP with 367-388 FT-LBS of torque depending on fuel grade! - APR - Audi Porsche

Higher peak figures of 306-314 HP with 367-388 FT-LBS of torque depending on fuel grade! 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!
This upgrade must be performed at ECS Tuning's facility in Ohio.

Brand:
APR - Corporate Logo
ES#:
3146864
Mfg#:
DPP-2.0T-MLB-SP
In Stock
$499.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Blow Off Valve Kit

ES#3660019 - CTS-BV-0009-B9 - Blow Off Valve Kit - Fully serviceable, piston design valve is a direct bolt-on, without worry of a check engine light - CTS - Audi

Fully serviceable, piston design valve is a direct bolt-on, without worry of a check engine light affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTS - Corporate Logo
ES#:
3660019
Mfg#:
CTS-BV-0009-B9
Ships in 7 Business Days
ON SALE! SAVE 20%
$249.99

This product was last offered at the strikethrough price on
06-25-2026

$199.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor - 2 Pin

ES#2996744 - 06A919501A - Coolant Temperature Sensor - 2 Pin - Monitors coolant temperature for fan control & gauge readings. Includes gasket & securing clip - URO - Audi Volkswagen Porsche

Monitors coolant temperature for fan control & gauge readings. Includes gasket & securing clip affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2996744
Mfg#:
06A919501A
In Stock
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Timing Chain Guide Rail - Upper

ES#4685982 - 06H109509Q - Timing Chain Guide Rail - Upper - Left rail on the chain that connects to the camshaft - URO - Audi Volkswagen

Left rail on the chain that connects to the camshaft affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4685982
Mfg#:
06H109509Q
In Stock
ON SALE!
$16.99

This product was last offered at the strikethrough price on
06-25-2026

$16.14 USD
Free Shipping
on orders $49 and up

Sport Transmission Mount

ES#4830393 - CTS-TM-B8-65D - Sport Transmission Mount - Upgrade is designed to enhance the performance and power delivery with a stiffer 65A mount - CTS - Audi

Upgrade is designed to enhance the performance and power delivery with a stiffer 65A mount affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTS - Corporate Logo
ES#:
4830393
Mfg#:
CTS-TM-B8-65D
Ships in 7 Business Days
ON SALE! SAVE 15%
$34.99

This product was last offered at the strikethrough price on
06-25-2026

$29.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
Scratch and Dent Item

Precision Raceworks Performance Fuel Pump - Stage 3 - Drop In Ready AWD *Scratch And Dent*

ES#4907948 - 601-0101 - Precision Raceworks Performance Fuel Pump - Stage 3 - Drop In Ready AWD *Scratch And Dent* - Scratch & Dent - Audi Volkswagen

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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Scratch & Dent - Corporate Logo
ES#:
4907948
Mfg#:
601-0101
Ships in 1 day
ON SALE! SAVE 35%
$749.99

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

$487.49 USD
Free Shipping
on orders $49 and up

Brass Oil Drain Plug

ES#3714258 - 06L103801prm - Brass Oil Drain Plug - Premium brass construction with o-ring - URO Premium - Audi Volkswagen Porsche

Premium brass construction with o-ring affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
URO Premium - Corporate Logo
ES#:
3714258
Mfg#:
06L103801PRM
In Stock
$8.54 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Diverter Valve Block Off Plate

ES#2992471 - CTSHW049 - Diverter Valve Block Off Plate - Commonly used for running aftermarket diverter and blow off valves - CTS - Audi Volkswagen

Commonly used for running aftermarket diverter and blow off valves affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTS - Corporate Logo
ES#:
2992471
Mfg#:
CTSHW049
In Stock
ON SALE! SAVE 15%
$29.99

This product was last offered at the strikethrough price on
06-25-2026

$25.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Replacement Rear Main Seal

ES#3612266 - 462-103-171FSEAL - Replacement Rear Main Seal - Replacement Viton rubber seal for the iABED Billet Aluminum Rear Main Seal Upgrade - iABED Industries - Audi Volkswagen

Replacement Viton rubber seal for the iABED Billet Aluminum Rear Main Seal Upgrade affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
iABED Industries - Corporate Logo
ES#:
3612266
Mfg#:
462-103-171FSEAL
Back Ordered
Auto Notify
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Brake Reservoir Cap

ES#4716596 - 5Q0611349E - Brake Reservoir Cap - Clean up your engine bay with a new cap - Genuine Volkswagen Audi - Audi Volkswagen

Clean up your engine bay with a new cap affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4716596
Mfg#:
5Q0611349E
Ships in 2 Business Days
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Brisk Silver Racing ER12YS Spark Plug - Priced Each

ES#4017481 - ER12YS - Brisk Silver Racing ER12YS Spark Plug - Priced Each - Featuring silver fine wire center electrode - Superior ignition ability increases engine power! - Brisk - Audi Volkswagen Mercedes Benz

Featuring silver fine wire center electrode - Superior ignition ability increases engine power! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
One heat range colder than stock with a projected tip

Brand:
Brisk - Corporate Logo
ES#:
4017481
Mfg#:
ER12YS
In Stock
8% off MSRP

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

$12.99

This product was last offered at the strikethrough price on
06-25-2026

$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fuel Injector Puller/Installer Tool Set

ES#2975858 - T10133C - Fuel Injector Puller/Installer Tool Set - Don't risk damaging your injectors - Genuine Volkswagen Audi - Audi Volkswagen

Don't risk damaging your injectors affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2975858
Mfg#:
T10133C
Special Order: No Guaranteed ETA
13% off MSRP

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

$549.99

This product was last offered at the strikethrough price on
06-25-2026

$478.73 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Crankshaft Timing Sprocket

ES#4508849 - 06H105209AT - Crankshaft Timing Sprocket - Toothed sprocket bolts to crankshaft - Drives the timing chain & oil pump - Hamburg Tech - Audi Volkswagen

Toothed sprocket bolts to crankshaft - Drives the timing chain & oil pump affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
4508849
Mfg#:
06H105209AT
In Stock
ON SALE! SAVE 41%
$54.99

This product was last offered at the strikethrough price on
02-01-2026

$32.25 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Connecting Rod Bolt - Priced Each

ES#472497 - WHT001319 - Connecting Rod Bolt - Priced Each - Secures the connecting end caps. M9x50 - Genuine Volkswagen Audi - Audi Volkswagen

Secures the connecting end caps. M9x50 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
472497
Mfg#:
WHT001319
In Stock
$4.26 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

High Pressure Fuel Pump O-Ring

ES#2739735 - WHT005184 - High Pressure Fuel Pump O-Ring - Seals the high pressure fuel pump to the cylinder head - Elring - Audi Volkswagen

Seals the high pressure fuel pump to the cylinder head affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
2739735
Mfg#:
WHT005184
In Stock
$10.36

This product was last offered at the strikethrough price on
04-14-2026

$8.15 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Refresh Kit - Level 1

ES#4766492 - 06L121012AKT2AKT - Cooling System Refresh Kit - Level 1 - This entry level kit includes thermostat, waterpump, expansion tank, coolant, and all necessary hardware. - Assembled By ECS - Audi

This entry level kit includes thermostat, waterpump, expansion tank, coolant, and all necessary hardware. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with engine code CYMC (model years through 2020)

Brand:
Assembled By ECS - Corporate Logo
ES#:
4766492
Mfg#:
06L121012AKT2AKT
Ships in 8 Business Days
ON SALE!
$516.99

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

$472.62 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial 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.

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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