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Audi C5 A6 Quattro 4.2

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Audi C5 A6 Quattro 4.2 Engine Parts & Accessories

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Expansion Tank Cap

ES#1692 - 1J0121321B - Expansion Tank Cap - Keep proper pressure in your coolant system - Febi - Audi Volkswagen Porsche

Keep proper pressure in your coolant system 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
1692
Mfg#:
1J0121321B
In Stock
ON SALE!
$12.99

This product was last offered at the strikethrough price on
07-14-2026

$12.60 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Brake Fluid Reservoir Cap

ES#2968802 - 6C0611349 - Brake Fluid Reservoir Cap - Clean up your engine bay with a new cap - Genuine Volkswagen Audi - Audi Volkswagen

Clean up your engine bay with a new cap

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2968802
Mfg#:
6C0611349
Ships in 2 Business 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.

$23.99

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

$21.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Valve Guide - Priced Each

ES#2794454 - IEVTVA1 - Valve Guide - Priced Each - Upgrade to new bronze alloy valve guides - Integrated Engineering - Audi Volkswagen

Upgrade to new bronze alloy valve guides 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794454
Mfg#:
IEVTVA1
Back Ordered
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Relay Roller - Priced Each

ES#1871 - 077109244C - Relay Roller - Priced Each - Smaller roller that attaches to the cylinder heads - Ina - Audi Volkswagen

Smaller roller that attaches to the cylinder heads We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
1871
Mfg#:
077109244C
Back Ordered
Auto Notify
$34.83

This product was last offered at the strikethrough price on
06-16-2026

$24.96 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Relay Roller - Priced Each

ES#3234855 - 077109244C - Relay Roller - Priced Each - Smaller roller that attaches to the cylinder heads - Gates - Audi Volkswagen

Smaller roller that attaches to the cylinder heads

Brand:
Gates - Corporate Logo
ES#:
3234855
Mfg#:
077109244C
Ships on Aug 13, 2026
$86.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Premium Oil Service Kit

ES#1891993 - C5A6V83KPMKT - Premium Oil Service Kit - Includes a Mann oil filter and Motul 5w-40 oil - Assembled By ECS - Audi

Includes a Mann oil filter and Motul 5w-40 oil 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
1891993
Mfg#:
C5A6V83KPMKT
In Stock
$172.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Spark Plug - Set Of Eight

ES#4996 - BKR6EQUA-8 - Spark Plug - Set Of Eight - Keep your engine running strong with copper core spark plugs - NGK - Audi Volkswagen

Keep your engine running strong with copper core spark plugs We Price Match - Give Us A Call or Chat!

Brand:
NGK - Corporate Logo
ES#:
4996
Mfg#:
BKR6EQUA-8
In Stock
$85.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Multipurpose Relay - Priced Each

ES#292340 - 165906381 - Multipurpose Relay - Priced Each - Electronic control module relay - Genuine Volkswagen Audi - Audi Volkswagen

Electronic control module relay

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
292340
Mfg#:
165906381
Ships in 3 Business Days
10% off MSRP

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

$47.99

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

$42.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#3618081 - 078121121J - Thermostat Housing - Located on the front right of the engine block - URO - Audi Volkswagen

Located on the front right of the engine block 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3618081
Mfg#:
078121121J
Ships in 1 Business Day
$170.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Belly Pan Clip - Priced Each

ES#6415 - 4A0805163 - Belly Pan Clip - Priced Each - Used in securing the belly pan to the fender liners - Genuine Volkswagen Audi - Audi Volkswagen

Used in securing the belly pan to the fender liners

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
6415
Mfg#:
4A0805163
In Stock
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Allen Bolt - Priced Each

ES#467365 - N10080204 - Allen Bolt - Priced Each - Install new hardware with your new parts. M6x50 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6x50

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
467365
Mfg#:
N10080204
Ships in 2 Business Days
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Timing Belt Damper

ES#2535082 - 078109479E - Timing Belt Damper - Applies pressure to the tensioning roller through the lever - URO - Audi Volkswagen

Applies pressure to the tensioning roller through the lever 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2535082
Mfg#:
078109479E
Ships in 1 Business Day
$41.97 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Solenoid Valve - Priced Each

ES#4883338 - 037906283C - Solenoid Valve - Priced Each - Common cure for DTC P0441 - Rein - Audi Volkswagen

Common cure for DTC P0441 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4883338
Mfg#:
037906283C
In Stock
$54.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Active Engine Mount Cancellation Kit

ES#4730404 - EBFI973801 - Active Engine Mount Cancellation Kit - Allows use of aftermarket engine mounts on vehicles equipped with active engine mounts without causing an error message. - Black Forest Industries - Audi

Allows use of aftermarket engine mounts on vehicles equipped with active engine mounts without causing an error message.

Brand:
Black Forest Industries - Corporate Logo
ES#:
4730404
Mfg#:
EBFI973801
Ships in 2 Business Days
$54.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hightec MULTI SYNTH DPF SAE 5W-30 - 1 Liter

ES#5374165 - 20125-0010-99 - Hightec MULTI SYNTH DPF SAE 5W-30 - 1 Liter - Specially developed engine oil based on selected HC synthetic base oils for modern passenger car Otto and diesel engines with exhaust after-treatment (diesel particulate filters) and turbocharging. - ROWE - Audi BMW Volkswagen

Specially developed engine oil based on selected HC synthetic base oils for modern passenger car Otto and diesel engines with exhaust after-treatment (diesel particulate filters) and turbocharging.

Brand:
ROWE - Corporate Logo
ES#:
5374165
Mfg#:
20125-0010-99
In Stock
$14.99 USD
Free Shipping
on orders $49 and up

Secondary Air Injection Pipe

ES#3130042 - 078131831L - Secondary Air Injection Pipe - Feeds air from the pump to both EGR/Combi valves - Vaico - Audi

Feeds air from the pump to both EGR/Combi valves We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
3130042
Mfg#:
078131831L
In Stock at Vendor
$168.99

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

$163.99 USD
Free Shipping
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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Manufacturer names and/or part numbers are used only for identification purposes.

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