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Audi D4 S8 Quattro 4.0T

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Audi D4 S8 Quattro 4.0T Engine Ignition Parts

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Extended 5/8" (16mm) Magnetic Spark Plug Socket

ES#9340 - S-3858-125 - Extended 5/8" (16mm) Magnetic Spark Plug Socket - The perfect tool for deeply recessed 5/8-inch spark plugs - Schwaben - Audi BMW Volkswagen MINI Porsche
ECS Tuning recommends this product.

The perfect tool for deeply recessed 5/8-inch spark plugs 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Schwaben - Corporate Logo
ES#:
9340
Mfg#:
S-3858-125
In Stock
ON SALE! SAVE 25%
$25.99

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

$19.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

4.0T Performance Ignition Service Kit

ES#4883044 - 056059LA04-ISKT - 4.0T Performance Ignition Service Kit - Featuring ECS Performance Ignition Coils & OEM NGK RS7 spark plugs for increased spark energy! - Assembled By ECS - Audi
ECS Tuning recommends this product.

Featuring ECS Performance Ignition Coils & OEM NGK RS7 spark plugs for increased spark energy! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4883044
Mfg#:
056059LA04-ISKT
In Stock
ON SALE! SAVE 11%
$521.99

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

$466.08 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

APR Upgraded Ignition Coil - Red - Set Of Eight

ES#4461220 - ms100219-8KT - APR Upgraded Ignition Coil - Red - Set Of Eight - Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! - APR - Audi

Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! Call In Or Chat For Best Price!

Brand:
APR - Corporate Logo
ES#:
4461220
Mfg#:
MS100219-8KT
In Stock
$423.60 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Spark Plug - Priced Each

ES#3181830 - 06K905601M - Performance Spark Plug - Priced Each - OE upgrade spark plug originally found in the Audi RS7/RS3. NGK OE# 06K905601M - Genuine Volkswagen Audi - Audi Volkswagen

OE upgrade spark plug originally found in the Audi RS7/RS3. NGK OE# 06K905601M

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3181830
Mfg#:
06K905601M
In Stock
9% off MSRP

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

$27.49

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

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

APR Iridium Pro Spark Plug - Priced Each

ES#4616174 - Z1003100 - APR Iridium Pro Spark Plug - Priced Each - An excellent upgrade for tuned engines. 14X26.5X16mm - Heat Range 9 - APR - Audi Volkswagen Porsche

An excellent upgrade for tuned engines. 14X26.5X16mm - Heat Range 9 Call In Or Chat For Best Price!

Brand:
APR - Corporate Logo
ES#:
4616174
Mfg#:
Z1003100
Back Ordered
11% off MSRP

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

$35.94

This product was last offered at the strikethrough price on
09-15-2026

$31.95 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Ignition Service Kit

ES#4475462 - 06K905601MKT4 - Performance Ignition Service Kit - Includes eight OE spark plugs and eight APR coil packs. - Assembled By ECS - Audi

Includes eight OE spark plugs and eight APR coil packs. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4475462
Mfg#:
06K905601MKT4
Ships in 1-2 days
$628.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Iridium Racing Spark Plugs - Priced Each

ES#4146805 - 5749 - Iridium Racing Spark Plugs - Priced Each - Upgraded spark plug originally found in the Audi RS7/RS3. 14X26.5X16mm - Heat Range 24 (SKU: IKH01-24) - Denso - Audi Volkswagen

Upgraded spark plug originally found in the Audi RS7/RS3. 14X26.5X16mm - Heat Range 24 (SKU: IKH01-24)

Brand:
Denso - Corporate Logo
ES#:
4146805
Mfg#:
5749
In Stock
$52.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Iridium Racing Spark Plugs - Priced Each

ES#4765800 - IKH01-27 - Iridium Racing Spark Plugs - Priced Each - An excellent upgrade for tuned engines. 14X26.5X16mm (Denso #: 5750) - Denso - Audi Volkswagen Porsche

An excellent upgrade for tuned engines. 14X26.5X16mm (Denso #: 5750) For Race Use Only - Colder iridium plug for performance - Heat Range: 27. Commonly used on Stage 3 4.0T Engines.

Brand:
Denso - Corporate Logo
ES#:
4765800
Mfg#:
IKH01-27
In Stock
$54.99

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

$53.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

APR Upgraded Ignition Coil - Red - Priced Each

ES#4461215 - MS100219 - APR Upgraded Ignition Coil - Red - Priced Each - Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! - APR - Audi

Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! Call In Or Chat For Best Price!
Call In, Chat, Or Email, For Best Price! Limited Time Only!

Brand:
APR - Corporate Logo
ES#:
4461215
Mfg#:
MS100219
In Stock
12% off MSRP

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

$59.95

This product was last offered at the strikethrough price on
09-15-2026

$52.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS 4.0T Performance Ignition Coil - Set Of Eight

ES#4883043 - 056059la04-8KT - ECS 4.0T Performance Ignition Coil - Set Of Eight - Increased energy output over OE coils for a stronger, more consistent spark! - ECS - Audi
ECS Tuning recommends this product.

Increased energy output over OE coils for a stronger, more consistent spark! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4883043
Mfg#:
056059LA04-8KT
In Stock
ON SALE! SAVE 15%
$375.99

This product was last offered at the strikethrough price on
07-24-2026

$319.59 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Gap Tool With Feeler Gauge

ES#4690217 - 601-0109 - Gap Tool With Feeler Gauge - A must for installing any spark plugs! - Precision Raceworks - Audi BMW Volkswagen Mercedes Benz MINI Porsche

A must for installing any spark plugs!

Brand:
Precision Raceworks - Corporate Logo
ES#:
4690217
Mfg#:
601-0109
In Stock
$39.99 USD
Free Shipping
on orders $49 and up

APR Iridium Pro Spark Plug - Set Of Eight

ES#4616189 - z1003100-8KT - APR Iridium Pro Spark Plug - Set Of Eight - An excellent upgrade for tuned engines. 14X26.5X16mm - Heat Range 9 - APR - Audi

An excellent upgrade for tuned engines. 14X26.5X16mm - Heat Range 9 Call In Or Chat For Best Price!

Brand:
APR - Corporate Logo
ES#:
4616189
Mfg#:
Z1003100-8KT
Back Ordered
$255.60 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Spark Plug Socket 12" x 5/8" - Bavarian Autosport

ES#3673914 - B8800072 - Spark Plug Socket 12" x 5/8" - Bavarian Autosport - Magnetic insert holds the spark plug securely in place for easy installation. - Bav Auto Tools - Audi BMW Volkswagen MINI Porsche
ECS Tuning recommends this product.

Magnetic insert holds the spark plug securely in place for easy installation. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bav Auto Tools - Corporate Logo
ES#:
3673914
Mfg#:
B8800072
In Stock
ON SALE! SAVE 25%
$37.99

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

$28.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS 4.0T Performance Ignition Coil - Priced Each

ES#4821274 - 056059LA04 - ECS 4.0T Performance Ignition Coil - Priced Each - Increased energy output over OE coils for a stronger, more consistent spark! - ECS - Audi
ECS Tuning recommends this product.

Increased energy output over OE coils for a stronger, more consistent spark! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4821274
Mfg#:
056059LA04
In Stock
ON SALE! SAVE 15%
$46.99

This product was last offered at the strikethrough price on
07-24-2026

$39.94 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Service Tools

ES#2999145 - ic-03KT - Ignition Service Tools - Remove ignition coils and spark plugs without damaging them - Schwaben - Audi Volkswagen
ECS Tuning recommends this product.

Remove ignition coils and spark plugs without damaging them 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Schwaben - Corporate Logo
ES#:
2999145
Mfg#:
IC-03KT
In Stock
ON SALE! SAVE 22%
$55.99

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

$43.48 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Ignition Parts

Modern high-tech ignitions are complex, computer-controlled systems that deliver spark to the cylinders with amazing efficiency and split-second timing, but they don't last forever. That's why ECS Tuning stocks ignition modules, ignition coils, ignition wiring, and spark plugs. Look to us for OEM and aftermarket ignition parts to keep your engine running strong.

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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