Spark Plug 06K-905-601-K
When a spark plug starts to fail, symptoms include difficulty starting the engine, misfires, or a noticeable drop in fuel economy. Ignoring these signs can lead to more extensive engine damage, resulting in costly repairs down the line. Regular inspections and timely replacements can prevent these issues from escalating.
Choosing an OEM spark plug with part number 06K-905-601-K guarantees quality and reliability. This part is engineered to meet the specific demands of your engine, ensuring efficient combustion and longevity. Opting for OEM means trusting in a product that has undergone rigorous testing for performance and durability.
Available in Stores
| Seller | Price | Action |
|---|---|---|
|
Leith Volkswagen
Official Dealer
|
$48 |
| Seller | Price | Action |
|---|---|---|
|
Volkswagen
New
|
$28 $20 | |
|
Capitol Volkswagen
New
|
$64 |
| Seller | Price | Action |
|---|---|---|
|
INTEO на RIA
Used
|
$24 | |
|
Infoparts13.com.ua
Used
|
$28 | |
|
Ford-shop
Used
|
$34 |
| Seller | Price | Action |
|---|---|---|
|
Lewisville Volkswagen
New
|
$32 $29 |
| Seller | Price | Action |
|---|---|---|
|
FR_anc
New
|
$33 | |
|
allbids
Used
|
$28 | |
|
7000obrotow
New
|
$12 |
Vehicle Fitment
Vehicles confirmed compatible with this part
Technical Specifications
| OEM Part Number | 06K905601K |
|---|---|
| Manufacturer | NGK |
| Electrode Material | Iridium (center electrode) |
| Thread Size | M14 x 1.25 |
| Spanner / Socket Size | 16 mm |
| Electrode Configuration | 1 earthed electrode |
| Seat Type | Gasket seat |
| Weight | Approx. 0.06 kg |
| Application | 2.0L VAG engines (VW / Audi) |
The iridium center electrode delivers a sharper, more focused spark compared to standard copper plugs, supporting efficient combustion and longer service intervals.
Manufactured by NGK to Volkswagen Group specifications, this plug installs directly into compatible 2.0L VAG engines without modification or gap adjustment concerns.
Fits multiple Volkswagen and Audi platforms including Atlas, GTI, Tiguan, Jetta GLI, A3, Q3, and TT models spanning 2018–2025 model years.
Compatible Aftermarket Alternatives
The following aftermarket parts are confirmed direct equivalents for OEM 06K-905-601-K, cross-referenced from major manufacturer catalogs.
| Manufacturer | Part Number | Notes | Dimensions (mm) |
|---|---|---|---|
| Bosch | 8501 | Direct OEM-spec equivalent from Bosch; meets VAG iridium plug specifications. Widely available and a trusted choice for 2.0L VAG engines. Recommended | M14 x 1.25, 16 mm hex |
| Champion | OE246 | Listed as a direct equivalent to the OEM part; matches thread size, seat type, and electrode configuration. | M14 x 1.25, 16 mm hex |
| Brisk | — | Brisk offers a compatible equivalent; verify specific part number against your engine code before ordering. | — |
| NGK (OEM Supplier) | 06K905601K | NGK manufactures the OEM plug supplied to VAG. Purchasing the NGK-branded retail equivalent ensures identical construction to the factory part. | M14 x 1.25, 16 mm hex |
Always verify fitment against your VIN before ordering.
How to Replace the Spark Plug
Replacing the 06K905601K spark plugs is a straightforward service task on most 2.0L VAG engines. Always allow the engine to cool completely before starting, and work on one cylinder at a time to avoid mixing up ignition coil positions. The procedure below applies generally to compatible Volkswagen and Audi applications.
-
Let the Engine Cool and Disconnect the Battery
Allow the engine to cool fully to prevent burns and avoid thermal shock to the cylinder head threads. Disconnect the negative battery terminal before beginning work.
-
Remove Engine Covers
Remove any plastic engine covers or intake components that obstruct access to the ignition coils and spark plug wells on the cylinder head.
-
Disconnect Ignition Coil Connectors
Press the tab on each coil electrical connector and pull it free. Label or photograph coil positions if needed to ensure correct reinstallation.
-
Remove the Ignition Coils
Unscrew each ignition coil retaining bolt and pull the coil straight up and out of the spark plug well. Set aside in order.
-
Remove the Old Spark Plugs
Insert a 16 mm spark plug socket with a rubber insert and extension into the plug well. Turn counterclockwise to loosen and remove each old spark plug. Inspect the old plug for fouling, deposits, or electrode wear.
-
Inspect and Install New Spark Plugs
Inspect the 06K905601K plugs before installation. Start each plug by hand to avoid cross-threading, then tighten to the torque specification listed in your vehicle's service manual. Consult a certified technician or the factory workshop manual for the precise torque value.
-
Reinstall Coils and Reconnect Connectors
Slide each ignition coil back into its well, reinstall the retaining bolt, and reconnect the electrical connector until it clicks. Ensure no connectors are left loose.
-
Replace Engine Covers and Reconnect Battery
Refit all engine covers, reconnect the negative battery terminal, and start the engine. Listen for smooth idle and confirm no misfires or warning lights are present.
Signs of a Worn Part
-
Engine Misfire / Check Engine Light
A worn or fouled spark plug may fail to ignite the air-fuel mixture consistently, triggering cylinder-specific misfire codes (P030X) and illuminating the check engine light.
-
Rough or Unstable Idle
Degraded electrode tips cause inconsistent spark timing, resulting in a rough, shaky idle that is especially noticeable when the engine is cold or under light load.
-
Increased Fuel Consumption
Incomplete combustion from a weak spark forces the ECU to compensate with richer fuel trims, noticeably reducing fuel economy over time.
-
Hard Starting or Extended Cranking
A spark plug that cannot generate adequate spark voltage makes it difficult to fire the engine, particularly in cold weather or after extended periods of inactivity.
-
Hesitation or Lack of Acceleration
During hard acceleration, a failing plug may not fire reliably under high cylinder pressure, causing stumbling, hesitation, or a flat spot in the power band.
Replacement Intervals
Replacement intervals are general guidelines. Always refer to the specific model-year owner manual or VW/Audi service schedule for your engine code. Driving style, fuel quality, and oil consumption can all affect actual plug life.
Frequently Asked Questions
Is the 06K905601K a pre-gapped spark plug?
Yes, this OEM iridium plug is supplied pre-gapped to factory specification. However, it is good practice to verify the gap has not shifted during shipping before installation, especially since iridium electrode tips are more delicate than standard copper plugs.
How many spark plugs do I need to order for my vehicle?
Most compatible vehicles use a 4-cylinder 2.0L engine, which requires four spark plugs. Always replace the full set at once to ensure even combustion across all cylinders. Confirm your engine cylinder count before ordering.
Can I use a Bosch 8501 or Champion OE246 instead of the OEM part?
Yes. Both the Bosch 8501 and Champion OE246 are listed as direct equivalents to the 06K905601K and match the OEM thread size, seat type, and electrode configuration. The Bosch 8501 is generally considered the closest aftermarket match for VAG applications.
Do I need to use anti-seize on these spark plugs?
No. Anti-seize is not recommended for this OEM iridium plug. The threads may already have a factory coating, and applying anti-seize would alter the torque values needed for proper seating, potentially leading to over- or under-tightening.
How do I confirm this part is correct for my specific vehicle?
Cross-reference the part using your vehicle's engine code (not just the model name). Compatible applications include 2.0L VAG engines in models such as the VW Atlas, GTI, Jetta GLI, Tiguan, and Audi A3, Q3, and TT. When in doubt, use a VIN-based parts lookup or consult a VW/Audi dealership parts counter.
What happens if I delay replacing worn spark plugs?
Continuing to drive with worn plugs can lead to persistent misfires, which may cause catalytic converter damage due to unburned fuel entering the exhaust. It can also result in increased fuel consumption, rough idle, hard starting, and stored fault codes that may affect emissions testing.
Found an Error?
Help us improve! If you've spotted an error on the site or in the data, let us know and we'll fix it as soon as possible.