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Audi C5 A6 Quattro 2.7T

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Audi C5 A6 Quattro 2.7T Engine Parts & Accessories

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Oil Pressure Switch - black

ES#279800 - 06A919081J - Oil Pressure Switch - black - Senses engine oil pressure for the ECU and warning light. 1.2-1.6 BAR - Genuine Volkswagen Audi - Audi Volkswagen

Senses engine oil pressure for the ECU and warning light. 1.2-1.6 BAR From the 2000 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
279800
Mfg#:
06A919081J
In Stock
27% off MSRP

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

$50.81

This product was last offered at the strikethrough price on
10-02-2026

$36.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump

ES#2526477 - 078121006A - Water Pump - Featuring a metal impeller with gasket - Geba - Audi

Featuring a metal impeller with gasket

Brand:
Geba - Corporate Logo
ES#:
2526477
Mfg#:
078121006A
In Stock
$70.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Harmonic Damper Crankshaft Pulley

ES#3234500 - 651211 - Harmonic Damper Crankshaft Pulley - Provides broad range control of destructive crankshaft torsional vibration for optimum horsepower and durability - Fluidampr - Audi

Provides broad range control of destructive crankshaft torsional vibration for optimum horsepower and durability

Brand:
Fluidampr - Corporate Logo
ES#:
3234500
Mfg#:
651211
In Stock at Vendor
$518.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Timing Belt

ES#523303 - 078109119j - Timing Belt - The most important belt on your engine - Continental - Audi Volkswagen

The most important belt on your engine We Price Match - Give Us A Call or Chat!

Brand:
Continental - Corporate Logo
ES#:
523303
Mfg#:
078109119J
Ships in 9 Business Days
$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Valve Stem Seal - Priced Each

ES#2581847 - 036109675 - Valve Stem Seal - Priced Each - Seals the valve stem in the cylinder head. 6mm - Elring - Audi Volkswagen

Seals the valve stem in the cylinder head. 6mm 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
2581847
Mfg#:
036109675
In Stock
$2.98 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Silicone Intercooler Hose Set

ES#3432231 - 034-145-A003 - Performance Silicone Intercooler Hose Set - Replace your failure-prone factory rubber hoses with boost-friendly silicone! - 034Motorsport - Audi

Replace your failure-prone factory rubber hoses with boost-friendly silicone! 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3432231
Mfg#:
034-145-A003
In Stock
$234.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Pressure Check Valve - priced each

ES#277759 - 059103175F - Oil Pressure Check Valve - priced each - Located under the cylinder block ventilation cover - Genuine Volkswagen Audi - Audi

Located under the cylinder block ventilation cover

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
277759
Mfg#:
059103175F
In Stock
13% off MSRP

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

$123.32

This product was last offered at the strikethrough price on
10-02-2026

$107.09 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Silicone Throttle Body Boot - Black

ES#2864571 - 034-112-6007-BLA - Silicone Throttle Body Boot - Black - Replaces the troublesome and weak "Y" boot - Includes clamps - 034Motorsport - Audi

Replaces the troublesome and weak "Y" boot - Includes clamps 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
2864571
Mfg#:
034-112-6007-BLA
In Stock
$107.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Timing Belt Kit - Ultimate

ES#2576 - 078198479 V2TT - Timing Belt Kit - Ultimate - Complete kit to service your timing belt, water pump, and thermostat - Assembled By ECS - Audi

Complete kit to service your timing belt, water pump, and thermostat 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2576
Mfg#:
078198479 V2TT
Back Ordered
ON SALE!
$219.99

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

$205.15 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Engine Oil Dipstick - Silver Anodized

ES#3023199 - 009354ECS02-03 - Billet Engine Oil Dipstick - Silver Anodized - A more durable and aesthetically pleasing addition to your engine bay - ECS - Audi

A more durable and aesthetically pleasing addition to your engine bay 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3023199
Mfg#:
009354ECS02-03
In Stock
ON SALE! SAVE 25%
$90.99

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

$68.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor With O-Ring & Clip - 4 Pin

ES#264174 - 059919501AKT2 - Coolant Temperature Sensor With O-Ring & Clip - 4 Pin - Updated Green sensor with square/round connector. Please check existing sensor color - Genuine Volkswagen Audi - Audi Volkswagen

Updated <font color='green'>Green</font> sensor with square/round connector. Please check existing sensor color

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
264174
Mfg#:
059919501AKT2
In Stock
$47.91 USD
Free Shipping
on orders $49 and up
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 7 Business Days
ON SALE! SAVE 20%
$149.99

This product was last offered at the strikethrough price on
09-29-2026

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

Zerex Coolant / Antifreeze - Pink G40 (Concentrate) 1 Gallon

ES#4884761 - 0009897110090109 - Zerex Coolant / Antifreeze - Pink G40 (Concentrate) 1 Gallon - MBZ Approval: 325.5 / 325.6 - Genuine Mercedes Benz - Audi Volkswagen Mercedes Benz Porsche

MBZ Approval: 325.5 / 325.6

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
4884761
Mfg#:
0009897110090109
In Stock
2% off MSRP

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

$32.04

This product was last offered at the strikethrough price on
10-02-2026

$31.50 USD
Free Shipping
on orders $49 and up

710N Diverter Valve - Priced Each

ES#2804306 - 06A145710NKT - 710N Diverter Valve - Priced Each - A great upgrade for stock to mildly tuned engines. Includes band clamps - Assembled By ECS - Audi Volkswagen

A great upgrade for stock to mildly tuned engines. Includes band clamps 10X Entries Into Our F80 M3 Sweepstakes
2 required

Brand:
Assembled By ECS - Corporate Logo
ES#:
2804306
Mfg#:
06A145710NKT
In Stock
ON SALE! SAVE 24%
$51.99

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

$39.73 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RS4 K04 Turbochargers - Complete Kit

ES#3658989 - 53049880025/26KT - RS4 K04 Turbochargers - Complete Kit - Comprehensive kit includes the left & right side RS4 K04 turbochargers, 034Motorsport RS4 Inlet Pipe set, and associated installation hardware - Assembled By ECS - Audi

Comprehensive kit includes the left & right side RS4 K04 turbochargers, 034Motorsport RS4 Inlet Pipe set, and associated installation hardware 10X Entries Into Our F80 M3 Sweepstakes
*2003 and 2004 A6 and Allroad 2.7T's with automatic transmissions have a different downpipe design, and some modification is required for installation.*

Brand:
Assembled By ECS - Corporate Logo
ES#:
3658989
Mfg#:
53049880025/26KT
Ships in 1 Business Day
$3718.00

This product was last offered at the strikethrough price on
06-19-2026

$3715.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

K04/K03 Turbocharger Installation Kit

ES#1346 - RS4KO4INSTKIT - K04/K03 Turbocharger Installation Kit - All hardware & gaskets to install new 2.7T turbochargers. - Assembled By ECS - Audi

All hardware & gaskets to install new 2.7T turbochargers. 10X Entries Into Our F80 M3 Sweepstakes
For manual transmission vehicles. For automatic transmission vehicles up to the 2002 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
1346
Mfg#:
RS4KO4INSTKIT
In Stock
$67.99

This product was last offered at the strikethrough price on
05-20-2026

$64.99 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.

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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