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Audi C4 S4 Quattro 20v T 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

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

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

Ignition Control Unit - Priced Each

ES#10206 - 4A0905351A - Ignition Control Unit - Priced Each - Cure misfires and clear the check engine light - Beru - Audi

Cure misfires and clear the check engine light Beru unit that is mounted on right firewall, there is two per car

Brand:
Beru - Corporate Logo
ES#:
10206
Mfg#:
4A0905351A
Ships in 2 Business Days
$79.99

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

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

Titan Swivel Spark Plug Socket Extension

ES#4352826 - TIT62161 - Titan Swivel Spark Plug Socket Extension - Knurled shaft for better grip - Titan - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Knurled shaft for better grip

Brand:
Titan - Corporate Logo
ES#:
4352826
Mfg#:
TIT62161
Ships on Dec 1, 2026
$25.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Spark Plug Socket 16MM 12 Point Swivel

ES#3604875 - CTA4329 - Spark Plug Socket 16MM 12 Point Swivel - Use for cars requiring Swivel Spark Plug Socket 16MM or brisk plugs 6 point - CTA Tools - Audi BMW Volkswagen MINI Porsche

Use for cars requiring Swivel Spark Plug Socket 16MM or brisk plugs 6 point

Brand:
CTA Tools - Corporate Logo
ES#:
3604875
Mfg#:
CTA4329
In Stock
$24.28 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BMS Billet Spark Plug Gapper Tool - 14mm

ES#3691577 - BMSBSPGT14mm - BMS Billet Spark Plug Gapper Tool - 14mm - Get the spark plug gap you are looking for! .018 to .024 thickness - Burger Motorsports - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Get the spark plug gap you are looking for! .018 to .024 thickness

Brand:
Burger Motorsports - Corporate Logo
ES#:
3691577
Mfg#:
BMSBSPGT14MM
Ships in 7 Business Days
$35.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Coil Pack - Each

ES#1917 - 034905101 - Ignition Coil Pack - Each - Replace that dead coil, connector included. - Beru - Audi

Replace that dead coil, connector included.

Brand:
Beru - Corporate Logo
ES#:
1917
Mfg#:
034905101
Ships in 1 day
$141.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Spark Plug Gapper

ES#4336973 - CTA3235 - Spark Plug Gapper - Always check gap on your new spark plugs - CTA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Always check gap on your new spark plugs

Brand:
CTA Tools - Corporate Logo
ES#:
4336973
Mfg#:
CTA3235
In Stock
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

AAN/ABY/ADU Coilpack Update Harness

ES#3209923 - 034-701-0001 - AAN/ABY/ADU Coilpack Update Harness - Do away with costly replacement coils with updated VAG 2.0T FSI coils with built-in power stages - 034Motorsport - Audi

Do away with costly replacement coils with updated VAG 2.0T FSI coils with built-in power stages 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3209923
Mfg#:
034-701-0001
Ships in 2 Business Days
$245.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Ignition Control Unit - Priced Each

ES#4142135 - 4A0905351A - Ignition Control Unit - Priced Each - Cure misfires and clear the check engine light - Hitachi - Audi

Cure misfires and clear the check engine light Beru unit that is mounted on right firewall, there is two per car

Brand:
Hitachi - Corporate Logo
ES#:
4142135
Mfg#:
4A0905351A
Ships in 1 Business Day
$148.99

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

$144.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Control Unit - Priced Each

ES#2795802 - 4A0905351A - Ignition Control Unit - Priced Each - Cure misfires and clear the check engine light - Hamburg Tech - Audi

Cure misfires and clear the check engine light We Price Match - Give Us A Call or Chat!
Mounted on right firewall - two per vehicle

Brand:
Hamburg Tech - Corporate Logo
ES#:
2795802
Mfg#:
4A0905351A
Ships in 1 Business Day
$61.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

9-Wire Spark Plug Gap Gauge

ES#4336975 - CTA3238 - 9-Wire Spark Plug Gap Gauge - Always check gap on your new spark plugs - CTA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Always check gap on your new spark plugs

Brand:
CTA Tools - Corporate Logo
ES#:
4336975
Mfg#:
CTA3238
In Stock
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Extended Spark Plug Socket

ES#3008984 - SUU884506 - Extended Spark Plug Socket - 3/8" drive socket with 5/8" opening for most spark plugs - Sunex - Audi BMW Volkswagen Mercedes Benz MINI Porsche

3/8" drive socket with 5/8" opening for most spark plugs

Brand:
Sunex - Corporate Logo
ES#:
3008984
Mfg#:
SUU884506
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.

$31.99

This product was last offered at the strikethrough price on
09-17-2026

$28.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Control Unit - Priced Each

ES#2594298 - 4A0905351A - Ignition Control Unit - Priced Each - Cure misfires and clear the check engine light - Huco - Audi

Cure misfires and clear the check engine light Mounted on right firewall - two per vehicle

Brand:
Huco - Corporate Logo
ES#:
2594298
Mfg#:
4A0905351A
Back Ordered
$117.99 USD
Free Shipping
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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