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Audi B5 A4 Quattro 1.8T

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Audi B5 A4 Quattro 1.8T Engine Parts & Accessories

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F21 Hybrid Turbocharger

ES#2840950 - f21l - F21 Hybrid Turbocharger - Complete bolt on Turbo upgrade includes exhaust manifold & Turbo inlet hose - FrankenTurbo - Audi

Complete bolt on Turbo upgrade includes exhaust manifold & Turbo inlet hose

Brand:
FrankenTurbo - Corporate Logo
ES#:
2840950
Mfg#:
F21L
Ships in 4 Business Days
$1299.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Ignition Coils - Set Of Four

ES#258813 - 058AEBKT - Ignition Coils - Set Of Four - A common cure for misfire codes - Genuine Volkswagen Audi - Audi Volkswagen

A common cure for misfire codes

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
258813
Mfg#:
058AEBKT
In Stock
$646.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Supertech Piston - .5mm Oversize - Set Of 4

ES#4742768 - P4-VW18T815-N4 - Supertech Piston - .5mm Oversize - Set Of 4 - Supertech .5mm oversized piston set including 20mm wrist pins. - Supertech - Audi Volkswagen

Supertech .5mm oversized piston set including 20mm wrist pins.

Brand:
Supertech - Corporate Logo
ES#:
4742768
Mfg#:
P4-VW18T815-N4
Ships on Aug 20, 2026
$638.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Turbo Oil Line Gasket

ES#1591 - 058145757A - Turbo Oil Line Gasket - Seals the oil return lines to the oil pan - Elring - Audi Volkswagen

Seals the oil return lines to the oil pan 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
1591
Mfg#:
058145757A
In Stock
$5.14 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Impulse Rotor

ES#4135797 - 050105189K - Impulse Rotor - Used by the crankshaft position sensor - Genuine Volkswagen Audi - Audi Volkswagen

Used by the crankshaft position sensor

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4135797
Mfg#:
050105189K
In Stock
7% off MSRP

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

$104.99

This product was last offered at the strikethrough price on
07-27-2026

$97.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat (87°C)

ES#261231 - 050121113C - Thermostat (87C) - Prevent overheating and premature engine wear - Genuine Volkswagen Audi - Audi Volkswagen

Prevent overheating and premature engine wear

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
261231
Mfg#:
050121113C
In Stock
15% off MSRP

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

$61.99

This product was last offered at the strikethrough price on
07-26-2026

$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Fuel Pressure Regulator & Gauge Kit

ES#5705 - 000198501BLK - Adjustable Fuel Pressure Regulator & Gauge Kit - Works as a replacement for most Bosch fuel pressure regulators. Adjustable from 25psi - 75psi - ECS - Audi Volkswagen

Works as a replacement for most Bosch fuel pressure regulators. Adjustable from 25psi - 75psi 10X Entries For Our 25th Anniversary Sweepstakes!

Only for vehicles with rubber fuel lines that can be tapped into

Brand:
ECS - Corporate Logo
ES#:
5705
Mfg#:
000198501BLK
In Stock
ON SALE!
$265.99

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

$252.69 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

EGR Valve - Priced Each

ES#2681440 - 06B131101K - EGR Valve - Priced Each - Also known as the 'combi valve' - Pierburg - Audi Volkswagen

Also known as the 'combi valve' Engine code AWM

Brand:
Pierburg - Corporate Logo
ES#:
2681440
Mfg#:
06B131101K
Ships in 1-2 days
$157.55 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sealing Washer - Priced Each

ES#466245 - N0138149 - Sealing Washer - Priced Each - Install new hardware with your new parts. M14.2x17.9x1.5 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M14.2x17.9x1.5 Seals the coolant supply line/adapter to the turbocharger

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
466245
Mfg#:
N0138149
In Stock
24% off MSRP

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

$4.18

This product was last offered at the strikethrough price on
07-27-2026

$3.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing Washer - Priced Each

ES#9618 - 216-14018 - Sealing Washer - Priced Each - Install new hardware with your new parts. M14x18 - OE Aftermarket - Audi Volkswagen

Install new hardware with your new parts. M14x18 Seals the supply line from the fuel pump to the fuel filter. Two required

Brand:
OE Aftermarket - Corporate Logo
ES#:
9618
Mfg#:
216-14018
In Stock
$2.23 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Diverter Valve

ES#4818434 - 06A145710P - Diverter Valve - A great upgrade for stock to mildly tuned engines - Bremmen Parts - Audi Volkswagen

A great upgrade for stock to mildly tuned engines 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818434
Mfg#:
06A145710P
In Stock
ON SALE! SAVE 20%
$41.99

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

$33.45 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Filter - Priced Each

ES#2158199 - 06A115561B - Oil Filter - Priced Each - Replaces OEM# 06A115561B German quality for your Volkswagen - Hengst - Audi Volkswagen
ECS Tuning recommends this product.

Replaces OEM# 06A115561B German quality for your Volkswagen 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat! Hengst is our preferred OEM filtration supplier!

Brand:
Hengst - Corporate Logo
ES#:
2158199
Mfg#:
06A115561B
In Stock
$11.39

This product was last offered at the strikethrough price on
06-10-2026

$10.49 USD
Free Shipping
on orders $49 and up

Ignition Coil - Priced Each

ES#2528659 - 06B905115E - Ignition Coil - Priced Each - Keep your engine running smooth. - Beru - Audi Volkswagen

Keep your engine running smooth.

Brand:
Beru - Corporate Logo
ES#:
2528659
Mfg#:
06B905115E
In Stock
$57.51

This product was last offered at the strikethrough price on
04-09-2026

$43.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

12.0" 3.75mm (5/32") ID Black Silicone Vacuum Hose

ES#4338188 - 2101 - 12.0" 3.75mm (5/32") ID Black Silicone Vacuum Hose - ECS - Audi BMW Volkswagen Mercedes Benz

10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4338188
Mfg#:
2101
In Stock
ON SALE! SAVE 25%
$33.99

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

$25.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange Replacement Kit

ES#4017762 - CHS0645 - Coolant Flange Replacement Kit - A comprehensive kit designed to service the commonly failing cooling system components in a single repair. - Rein - Audi Volkswagen

A comprehensive kit designed to service the commonly failing cooling system components in a single repair. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with AEB & ATW engine codes with D-shaped coolant temp sensor

Brand:
Rein - Corporate Logo
ES#:
4017762
Mfg#:
CHS0645
Back Ordered
Auto Notify
$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.

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