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Volkswagen MK4 Engine Mechanical Parts

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Sealing O-Ring - Priced Each

ES#4375626 - N90067202 - Sealing O-Ring - Priced Each - O-ring used in various locations. 9.5x2.5mm - MTC - Audi Volkswagen

O-ring used in various locations. 9.5x2.5mm Secures the dipstick tube to the engine block

Brand:
MTC - Corporate Logo
ES#:
4375626
Mfg#:
N90067202
Ships in 9 Business Days
$0.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Valve Guide - Priced Each

ES#2801653 - 58103415 - Valve Guide - Priced Each - Ensure your engine valves remain properly aligned and supported with this CRP/Rein Automotive Engine Valve Guide. - Rein - Audi Volkswagen

Ensure your engine valves remain properly aligned and supported with this CRP/Rein Automotive Engine Valve Guide. 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2801653
Mfg#:
58103415
In Stock
ON SALE! SAVE 79%
$10.19

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

$2.15 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cap

ES#2090873 - 06A103485F - Oil Cap - Clean up your engine bay with a new cap - MTC - Audi Volkswagen

Clean up your engine bay with a new cap

Brand:
MTC - Corporate Logo
ES#:
2090873
Mfg#:
06A103485F
Back Ordered
$2.03 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turbo Oil Line - Return and Gasket

ES#5481484 - 06A145735AAKT - Turbo Oil Line - Return and Gasket - Line from stock turbocharger to oil pan and gasket to seal - Assembled By ECS - Audi Volkswagen

Line from stock turbocharger to oil pan and gasket to seal 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with production date up to 7/30/2003

Brand:
Assembled By ECS - Corporate Logo
ES#:
5481484
Mfg#:
06A145735AAKT
In Stock
$136.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Calico Coated ACL Race Rod And Main Bearing Set Standard Clearance

ES#5481267 - cal5m1644hKT - Calico Coated ACL Race Rod And Main Bearing Set Standard Clearance - This high-performance engine bearing package pairs dry-film lubricated rod and main bearings to provide maximum friction reduction and exceptional fatigue resistance under extreme loads. - Integrated Engineering - Audi Volkswagen

This high-performance engine bearing package pairs dry-film lubricated rod and main bearings to provide maximum friction reduction and exceptional fatigue resistance under extreme loads.

Brand:
Integrated Engineering - Corporate Logo
ES#:
5481267
Mfg#:
CAL5M1644HKT
In Stock
$323.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oversized, Back Cut Intake Valve - .5mm - Priced Each

ES#4858489 - 034-201-8015 - Oversized, Back Cut Intake Valve - .5mm - Priced Each - Black Nitride oversize stainless intake valve for all 4v VW/Audi motors including 16v,20v and 32v motors. - 034Motorsport - Audi Volkswagen

Black Nitride oversize stainless intake valve for all 4v VW/Audi motors including 16v,20v and 32v motors. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4858489
Mfg#:
034-201-8015
Ships in 2 Business Days
$43.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oversized Exhaust Valve - 1.5mm - Priced Each

ES#4858493 - 034-201-8016-1.5 - Oversized Exhaust Valve - 1.5mm - Priced Each - 1.5mm oversze Inconel exhuast valve for all 4v VW/Audi motors including 16v,20v and early 32v motors. - 034Motorsport - Audi Volkswagen

1.5mm oversze Inconel exhuast valve for all 4v VW/Audi motors including 16v,20v and early 32v motors. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4858493
Mfg#:
034-201-8016-1.5
Ships in 2 Business Days
$51.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Valve Cover Gasket - Priced Each

ES#5373873 - 051103483A - Valve Cover Gasket - Priced Each - Replace every time you open your valve cover - Ajusa - Volkswagen

Replace every time you open your valve cover For vehicles with AEG engine codes

Brand:
Ajusa - Corporate Logo
ES#:
5373873
Mfg#:
051103483A
Ships in 3 Business Days
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cylinder Head Bolt Set

ES#5346967 - 81019300 - Cylinder Head Bolt Set - Complete cylinder head bolt set - Ajusa - Volkswagen

Complete cylinder head bolt set

Brand:
Ajusa - Corporate Logo
ES#:
5346967
Mfg#:
81019300
Ships in 3 Business Days
$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Autobahn Autoworx 1.8T/2.0 Lightweight Billet Crank Pulley

ES#4500802 - Aut-mk4-cp1 - Autobahn Autoworx 1.8T/2.0 Lightweight Billet Crank Pulley - Lightweight Billet Aluminium Crankshaft Pulley For VW MK4 1.8t and 2.0 - Autobahn Autoworx - Volkswagen

Lightweight Billet Aluminium Crankshaft Pulley For VW MK4 1.8t and 2.0

Brand:
Autobahn Autoworx - Corporate Logo
ES#:
4500802
Mfg#:
AUT-MK4-CP1
Special Order: No Guaranteed ETA
$156.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CSF Universal Large Single-Pass Cooler

ES#5470103 - 8371 - CSF Universal Large Single-Pass Cooler - Universal cooler used for: engine oil, transmission oil, power-steering, differential oil, and as a water/coolant heat exchanger. - CSF - Audi BMW Volkswagen Mercedes Benz MINI

Universal cooler used for: engine oil, transmission oil, power-steering, differential oil, and as a water/coolant heat exchanger. 2X Entries Into Our F80 M3 Sweepstakes
Universal fitment design - modifications may be necessary to run this cooler

Brand:
CSF - Corporate Logo
ES#:
5470103
Mfg#:
8371
Ships in 3 Business Days
$499.00 USD
Free Shipping

Camshaft / Crankshaft Seal - Priced Each

ES#5516476 - 038103085C - Camshaft / Crankshaft Seal - Priced Each - PTFE design to stop oil leaks and prevent internal engine damage - Corteco - Audi Volkswagen

PTFE design to stop oil leaks and prevent internal engine damage

Brand:
Corteco - Corporate Logo
ES#:
5516476
Mfg#:
038103085C
Ships in 1 Business Day
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Crankshaft Seal - With Flange

ES#1848608 - 06A103171A - Rear Crankshaft Seal - With Flange - Also referred to as the 'rear main seal' - Corteco - Audi Volkswagen

Also referred to as the 'rear main seal'

Brand:
Corteco - Corporate Logo
ES#:
1848608
Mfg#:
06A103171A
Ships in 1 Business Day
$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Triple Square Bolt - Priced Each

ES#274995 - 038103714A - Triple Square Bolt - Priced Each - Holds the rocker arm assembly in the cylinder head. M8x90 - Genuine Volkswagen Audi - Volkswagen

Holds the rocker arm assembly in the cylinder head. M8x90 For vehicles with BEW engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
274995
Mfg#:
038103714A
Ships in 1 Business Day
11% off MSRP

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

$27.98

This product was last offered at the strikethrough price on
04-15-2026

$24.90 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Inlet Camshaft Control Valve

ES#3520838 - 066906455F - Inlet Camshaft Control Valve - This can be found near the camshaft adjuster on the intake cam. - Holstein - Audi Volkswagen

This can be found near the camshaft adjuster on the intake cam.

Brand:
Holstein - Corporate Logo
ES#:
3520838
Mfg#:
066906455F
Ships in 1 Business Day
$241.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Oil Pan Assembly

ES#5373899 - 038103603N - Oil Pan Assembly - Includes oil drain plug - Meistersatz - Volkswagen

Includes oil drain plug For vehicles with oil sensor level hole

Brand:
Meistersatz - Corporate Logo
ES#:
5373899
Mfg#:
038103603N
Ships in 3 Business Days
$75.99 USD
Free Shipping
on orders $49 and up

More About Engine Mechanical Parts

Whether you're repairing or upgrading your engine, we have engine parts from the most respected suppliers in the business. Purchase engine parts like connecting rods, valves, camshafts, cylinder heads, engine blocks, pistons, and more from ECS Tuning for your next engine repair or overhaul.

Let us help you find the parts that fit your Volkswagen

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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