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Audi D5 A8 Quattro 4.0T

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Audi D5 A8 Quattro 4.0T Engine Parts & Accessories

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Diverter Valve

ES#4066582 - 06H145710D - Diverter Valve - Superior piston style diverter valve - Hamburg Tech - Audi Volkswagen

Superior piston style diverter valve We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
4066582
Mfg#:
06H145710D
Ships in 4 Business Days
$55.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#5386435 - 0P2121115E - Thermostat - Includes new o-ring - Calorstat - Audi Porsche

Includes new o-ring

Brand:
Calorstat - Corporate Logo
ES#:
5386435
Mfg#:
0P2121115E
Ships in 1 Business Day
$134.00

This product was last offered at the strikethrough price on
05-07-2026

$123.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Air Filter

ES#3572233 - 4N0129620C - Air Filter - Keep clean air running through your engine - Genuine Volkswagen Audi - Audi

Keep clean air running through your engine

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3572233
Mfg#:
4N0129620C
Ships in 1-2 days
8% off MSRP

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

$79.99

This product was last offered at the strikethrough price on
10-03-2026

$73.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Filter Kit - Priced Each

ES#4683931 - 06M198405F - Oil Filter Kit - Priced Each - Keep debris out of your oil and keep your engine running healthily - Vaico - Audi Porsche

Keep debris out of your oil and keep your engine running healthily We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4683931
Mfg#:
06M198405F
Ships on Jan 28, 2027
$21.99 USD
Free Shipping
on orders $49 and up

Upper Tensioner Gasket - Center

ES#284587 - 079109139L - Upper Tensioner Gasket - Center - Seals the center timing chain tensioner to the engine - Genuine Volkswagen Audi - Audi

Seals the center timing chain tensioner to the engine

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
284587
Mfg#:
079109139L
In Stock
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing O-Ring - 80x4mm

ES#3694768 - WHT007809 - Thermostat Housing O-Ring - 80x4mm - 80 X 4 mm - Genuine Volkswagen Audi - Audi Porsche

80 X 4 mm

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3694768
Mfg#:
WHT007809
Ships in 1-2 days
11% off MSRP

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

$27.99

This product was last offered at the strikethrough price on
10-03-2026

$24.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

TGK Motorsport Audi EA824 4.0T 4.5 Bar Map Sensors - 3 Sensors

ES#5477620 - TGK-0303-03 - TGK Motorsport Audi EA824 4.0T 4.5 Bar Map Sensors - 3 Sensors - Upgraded 4.5 Bar MAP sensors that allow your Audi EA824 4.0T to accurately read and manage higher boost pressures for extreme performance tuning. - TGK Motorsport - Audi

Upgraded 4.5 Bar MAP sensors that allow your Audi EA824 4.0T to accurately read and manage higher boost pressures for extreme performance tuning.

Brand:
TGK Motorsport - Corporate Logo
ES#:
5477620
Mfg#:
TGK-0303-03
Ships in 5 Business Days
$89.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Radiator

Fix leaks and keep your cooling system efficient

Brand:
Mahle-Behr - Corporate Logo
ES#:
4839713
Mfg#:
8W0121251H
Ships in 1-2 days
$397.99

This product was last offered at the strikethrough price on
07-15-2026

$253.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

TGK Motorsport Audi 4.0T Billet Oil Fill Kit

A CNC-machined billet aluminum oil fill port for your Audi 4.0T that replaces the flimsy factory plastic and features an integrated 1/8" NPT port to easily monitor real-time crankcase pressure.

Brand:
TGK Motorsport - Corporate Logo
ES#:
5477634
Mfg#:
TGK-0305-13
Ships in 5 Business Days
$249.99 USD
Free Shipping

Thermostat Housing O-Ring - 55x5.33mm

ES#3694769 - WHT007814 - Thermostat Housing O-Ring - 55x5.33mm - 55 x 5.33 mm - Genuine Volkswagen Audi - Audi Porsche

55 x 5.33 mm

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3694769
Mfg#:
WHT007814
Ships in 1-2 days
11% off MSRP

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

$26.99

This product was last offered at the strikethrough price on
10-03-2026

$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Stainless Steel 4.0T Ignition Coil Hardware Kit

ES#4475737 - 97646A327-4.0TKT - Stainless Steel 4.0T Ignition Coil Hardware Kit - Upgraded stainless steel tie down bolts and washers. - ECS - Audi

Upgraded stainless steel tie down bolts and washers. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4475737
Mfg#:
97646A327-4.0TKT
In Stock
ON SALE! SAVE 20%
$32.99

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

$26.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Scorcher High-Performance Ignition Coil - Priced Each

ES#4810282 - 77-92005 - Scorcher High-Performance Ignition Coil - Priced Each - Experience up to 20% more spark energy compared to your factory coils. - AFE - Audi Volkswagen

Experience up to 20% more spark energy compared to your factory coils.

Brand:
AFE - Corporate Logo
ES#:
4810282
Mfg#:
77-92005
Ships in 3 Business Days
21% off MSRP

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

$72.99

This product was last offered at the strikethrough price on
10-03-2026

$58.00 USD
Free Shipping
on orders $49 and up

Titanium 4.0T Ignition Coil Hardware Kit - Set Of Eight

ES#4476326 - TI-M6X1X40-8KT - Titanium 4.0T Ignition Coil Hardware Kit - Set Of Eight - Replace your pesky OEM ignition coil tiedown studs with these titanium bolts! - ECS - Audi

Replace your pesky OEM ignition coil tiedown studs with these titanium bolts! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4476326
Mfg#:
TI-M6X1X40-8KT
In Stock
ON SALE! SAVE 20%
$65.99

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

$52.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing Gasket - Priced Each

ES#3693699 - 0P2121139 - Thermostat Housing Gasket - Priced Each - Two (2) Required - Genuine Volkswagen Audi - Audi Porsche

Two (2) Required

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3693699
Mfg#:
0P2121139
Ships in 1-2 days
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
10-03-2026

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

RacingLine Higher Output Ignition Coil - Grey - Priced Each

ES#4708245 - VWR900002 - RacingLine Higher Output Ignition Coil - Grey - Priced Each - Delivers greater energy output, ensuring a stronger and more consistent spark. A simple plug-and-play upgrade over the OE factory coils. - Racingline - Audi Volkswagen

Delivers greater energy output, ensuring a stronger and more consistent spark. A simple plug-and-play upgrade over the OE factory coils.

Brand:
Racingline - Corporate Logo
ES#:
4708245
Mfg#:
VWR900002
In Stock
ON SALE! SAVE 11%
$55.99

This product was last offered at the strikethrough price on
09-18-2026

$49.57 USD
Free Shipping
on orders $49 and up
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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