OEM Camshaft Adjuster | VANOS & VVT Actuators

Genuine OEM Camshaft Adjusters for European Cars

The camshaft adjuster — also called a variable valve timing actuator, and known by manufacturer names including BMW VANOS, Mercedes camshaft adjuster and Audi cam phaser — rotates the camshaft relative to the timing drive, varying valve timing according to engine load and speed. It is what lets a modern engine deliver low-end torque and high-end power from the same cylinder head.

When it fails, the engine does not stop — it runs progressively worse in ways that get attributed to almost everything else. We supply genuine OEM camshaft adjusters, solenoids and seals across every marque we serve, matched to engine code and production date. Send us your VIN and we will confirm before you order.

Symptoms and What They Usually Mean

A rattle from the front of the engine on cold start, lasting a few seconds and then clearing, is the classic early sign. The adjuster loses oil pressure when the engine stands and rattles until pressure is restored. It is easy to dismiss, and it gets worse.

Rough idle, reduced power and a timing-related fault code — typically camshaft position correlation or an over-advanced or over-retarded timing code. This is where the misdiagnosis usually starts.

Increased fuel consumption with no other obvious cause. An adjuster that is not reaching its commanded position runs the engine on timing that is wrong rather than absent, and the ECU compensates without necessarily setting a light.

Oil quality is the root cause more often than the part. These are hydraulic components operated by engine oil pressure through a fine control solenoid. Extended oil intervals, incorrect viscosity or sludge from short-journey driving block the oil passages and the solenoid screen — which is why the adjuster fails.

Diagnose Before You Order

Check the solenoid before the adjuster. The variable valve timing solenoid controls oil flow to the adjuster, and a blocked or electrically failed solenoid produces identical fault codes at a fraction of the cost. Its filter screen is frequently the actual problem.

Check oil level and condition. Low oil pressure from a low level, a worn oil pump or the wrong viscosity will cause adjuster faults with a perfectly good adjuster fitted.

Rule out timing chain wear. A stretched chain or worn tensioner produces camshaft correlation codes that look exactly like an adjuster fault. On engine families with known chain issues, confirm chain condition first — fitting an adjuster to an engine with a stretched chain does not fix it.

Check battery and charging health. Low voltage produces a cascade of codes including timing faults that clear once voltage is restored.

What to Know Before Ordering

• Adjusters are engine-code specific, not model specific. Two cars in the same body with different engines take different units.
• Intake and exhaust adjusters are separate part numbers on most engines, and on V-configurations there are four.
• Replace the seals and the solenoid where the design allows — the access overlaps and the solenoid is often implicated in the failure.
• Correct oil specification is not optional afterwards. BMW LL-01 and LL-04, MB-Approval 229.5 and 229.52, VW 504 00 and 508 00 — fitting a new adjuster and running the wrong oil repeats the failure.
• Gulf conditions shorten oil life. Heat and short urban journeys accelerate oil degradation, which is precisely what kills these components. Shorten the interval accordingly.

Camshaft Adjusters by Brand

BMW · Mercedes-Benz · Audi · Porsche · Land Rover · Bentley · Maserati · Ferrari · All brands →

Related Categories

Engine parts → · Oil filters → · Service kits → · Electrical parts & sensors → · Emissions & sensors → · Coolant parts →

Why Buy Camshaft Adjusters at EuroParts360?

• Genuine and OEM sourced — correct hydraulic tolerances and phasing range
• Engine-code matching — adjusters mapped to the actual engine, not the model badge
• Intake and exhaust identified separately — with bank position confirmed on V engines
• Solenoids and seals stocked — so the cheaper cause can be ruled out or replaced alongside
• Fast global dispatch — from our US, UK, UAE and Hong Kong warehouses, free shipping across the UAE and USA
• Warranty-backed — every part covered under our standard warranty policy

FAQ

My engine rattles for a few seconds on cold start. That is the classic camshaft adjuster signal — oil pressure drains while the engine stands and the adjuster rattles until it is restored. It gets worse rather than better, so investigate rather than monitor.

I have a camshaft correlation fault — is it the adjuster? Not necessarily. A blocked or failed VVT solenoid, low oil pressure, or a stretched timing chain all produce the same code. Rule those out first — the solenoid in particular is a fraction of the cost.

Why did my adjuster fail? Almost always oil related. These are hydraulic parts operated through fine oil passages and a filter screen; extended intervals, wrong viscosity or sludge blocks them. Fitting a new adjuster without correcting the oil regime repeats the failure.

Do I need to replace intake and exhaust adjusters together? Not necessarily, but the access usually overlaps — worth pricing both if the engine is already open.

How quickly will my order ship? In-stock orders dispatch from our UAE or USA warehouse with full tracking. For assistance, contact us on +1 818-851-0770, WhatsApp +971 568 908 800, or info@europarts360.com.