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Audi 4M RS Q8 Quattro 4.0T

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Audi 4M RS Q8 Quattro 4.0T Engine Parts & Accessories

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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 2 Business Days
$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

CTS Upgraded Ignition Coils - Set Of Eight

ES#4475618 - CTS-IGN-007-8KT - CTS Upgraded Ignition Coils - Set Of Eight - These are the perfect replacement or upgrade to your FSI/TSI/TFSI engine to keep it running at its peak performance. - CTS - Audi

These are the perfect replacement or upgrade to your FSI/TSI/TFSI engine to keep it running at it’s peak performance.

Brand:
CTS - Corporate Logo
ES#:
4475618
Mfg#:
CTS-IGN-007-8KT
In Stock
$319.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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
ON SALE! SAVE 10%
$55.99

This product was last offered at the strikethrough price on
09-03-2026

$50.15 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RaceChip XLR Throttle Controller With App Control

ES#4708643 - 999591 - RaceChip XLR Throttle Controller With App Control - Eliminate the delay in throttle response times with a simple XLR addition! Allows for Bluetooth connectivity for easy App based control. - Race Chip - Audi

Eliminate the delay in throttle response times with a simple XLR addition! Allows for Bluetooth connectivity for easy App based control.

Brand:
Race Chip - Corporate Logo
ES#:
4708643
Mfg#:
999591
Back Ordered
$299.00 USD
Free Shipping
on orders $49 and up

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 day
14% 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
08-31-2026

$23.99 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

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 day
15% 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
08-31-2026

$22.99 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

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

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 day
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
09-10-2026

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

Spark Plug - Set Of Eight

ES#4475625 - 0p2905601aktKT - Spark Plug - Set Of Eight - Keep your engine running smooth with a set of new plugs - Genuine Volkswagen Audi - Audi

Keep your engine running smooth with a set of new plugs

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4475625
Mfg#:
0P2905601AKTKT
Ships in 2 Business Days
$226.99

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

$223.99 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
ON SALE!
$58.00

This product was last offered at the strikethrough price on
09-01-2026

$55.10 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

Spark Plug

ES#4057943 - 0P2905601A - Spark Plug - Keep your engine running smooth with new plugs - Genuine Volkswagen Audi - Audi

Keep your engine running smooth with new plugs

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4057943
Mfg#:
0P2905601A
In Stock
Limited Qty Sale
$27.99

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

$25.99 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
08-29-2026

$49.57 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankshaft/Camshaft Position Sensor

ES#4625386 - 057906433C - Crankshaft/Camshaft Position Sensor - Also referred to as the impulse sender - Genuine Volkswagen Audi - Audi

Also referred to as the impulse sender

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4625386
Mfg#:
057906433C
Ships in 3 Business Days
7% off MSRP

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

$60.99

This product was last offered at the strikethrough price on
09-10-2026

$56.99 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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