Catalog

VAG/PORSCHE 059103469AR VALVE COVER

Product Specifications

Product quality
OEM Equivalent Grade
starstarstar
400 sold
Wholesale price USD $31.22
Wholesale price CNY ¥216
bolt MOQ (Minimal order)
300 pcs
local_shipping Production time
28 days
package_2 Shipping Weight: 1.1 kg
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VAG/PORSCHE 059103469AR
VAG/PORSCHE 059103469AQ
VAG/PORSCHE 059103469AT
VAG/PORSCHE 059103469BD
Overview & Operating Principle
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The VALVE COVER is the pressed steel, cast aluminium, or glass-fibre reinforced polymer cover bolted to the top of the cylinder head that encloses the valve train — camshafts, rocker arms or bucket tappets, and valve springs — protecting these components from contamination and retaining the engine oil mist that lubricates the upper valve train within the sealed head cavity. The cover performs three functional roles beyond simple enclosure: it provides the mounting surface and internal baffling for the positive crankcase ventilation (PCV) system that routes blowby gases from the crankcase through an oil separator integrated into or attached to the cover body before directing the de-oiled vapour back to the intake manifold; it houses the spark plug tube seals on engines where the plugs are recessed into the valve cover casting rather than the head; and on modern engines with integrated components, it may carry camshaft position sensor mounts, variable valve timing solenoid ports, or oil filler cap bosses as structural part of the engine's upper architecture. The cover-to-head joint is sealed with a formed rubber gasket that must accommodate the thermal expansion differential between the cover material and the aluminium cylinder head across the full temperature range from cold ambient to sustained high-load operating temperature.

This unit — VAG/PORSCHE 059103469AR — is manufactured to OEM-equivalent specifications: cover body profile and mounting bolt pattern, integrated PCV baffle geometry and port sizes, spark plug tube bore diameters and positions, oil filler cap thread size where applicable, gasket groove profile and dimensions, and all sensor or solenoid mounting boss positions are matched to the original part. Supplied as a direct replacement for standard fitment. Available wholesale from 31.22 USD, MOQ 300 pcs, production lead time 28 days.

Valve covers fail through oil leaks at the cover gasket from gasket compression set after high mileage and repeated heat cycling, from cover warping on plastic or thin steel covers caused by overtightened bolts that distort the sealing flange, and from physical cracks in polymer covers caused by impact or age embrittlement. A valve cover oil leak that drips onto the exhaust manifold produces an oil burning smell but no visible puddle — the oil burns off before reaching the ground — making this one of the most frequently overlooked leak sources at routine inspection. Always inspect the valve cover perimeter and spark plug tube seals at every service interval for early seepage before the leak becomes a fire risk on a hot exhaust surface.

Symptoms & Diagnostics
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Oil burning smell from the engine bay with no visible puddle under the vehicle — oil is seeping from the valve cover gasket perimeter and contacting the exhaust manifold directly below; the oil burns off before reaching the ground; confirm the source by cleaning the valve cover and exhaust area with degreaser, running the engine to operating temperature, and inspecting for fresh oil seepage at the cover joint.
Oil visible on top of the spark plug tubes or inside the spark plug recesses when the plugs are removed — the spark plug tube seals integrated into or beneath the valve cover have failed, allowing oil to migrate down the tube bore to the spark plug; oil-fouled spark plugs produce misfires and may cause catalytic converter damage from unburned fuel entering the exhaust.
Misfires on specific cylinders combined with oil-contaminated spark plugs — failed plug tube seals have allowed oil to foul the plug electrode; clean or replace the affected plugs simultaneously with the cover gasket and tube seals to eliminate fouling as a source of continuing misfire after the oil leak is repaired.
PCV system fault codes or excessive crankcase pressure indicated by oil being pushed past seals — the PCV baffle or oil separator integrated into the valve cover is blocked with sludge from extended oil change intervals, causing crankcase pressure to build and force oil past the rear main seal, front crankshaft seal, and dipstick tube; replacing the cover restores PCV function if the baffle is integral and non-serviceable.
Visible crack in the valve cover body on inspection — polymer covers crack from thermal embrittlement on high-mileage engines and from impact damage; a cracked cover cannot be sealed reliably with sealant and must be replaced; even a hairline crack that is not currently leaking will open under oil pressure and thermal cycling within a short period.
Oil leak at the valve cover that recurs shortly after gasket replacement — the cover sealing flange has been warped by previous overtightening of the mounting bolts; a warped flange cannot compress the new gasket uniformly and produces a leak at the high spots regardless of gasket quality; measure the cover flange flatness with a straight edge and feeler gauge; replace the cover if warpage exceeds 0.1–0.15 mm across the full length.
Logistics & Customs
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International HS Code
8409.99
EAEU Customs Code (TN VED)
8409 99 000 9
Typical Net Weight
1.1 kg
Country of Manufacture
China
Standard MOQ
300 pcs
Production Lead Time
28 days
Always verify the exact 8-digit or 10-digit subheading with your customs broker for the destination country, as tariff schedules and duty rates vary by jurisdiction.
Installation Tips
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  1. Allow the engine to cool fully before removing the valve cover — the cylinder head and valve cover retain heat for an extended period after engine shutdown; hot aluminium alloy is softer than cold alloy and gasket bolt threads in a hot head are more easily stripped; the new gasket should also be fitted to a cold, dimensionally stable surface to achieve correct compression set.
  2. Clean the cylinder head gasket groove and mating face meticulously after removing the old cover — use a plastic scraper to remove all traces of the old gasket material from the head groove without scratching the aluminium; residual old gasket compresses unevenly under the new gasket and creates leak paths; finish with a lint-free cloth soaked in brake cleaner to remove all oil film from the seating surface before fitting the new gasket.
  3. Apply RTV sealant at the four corners where the camshaft bearing caps meet the cylinder head surface, at the front and rear cam seal interfaces, and at any other T-junction point specified in the OEM service procedure — these are the only points where additional sealant is required alongside the formed gasket; applying RTV along the full gasket perimeter traps excess sealant inside the cover where it breaks off and blocks oil return passages or fouls cam journals.
  4. Seat the new gasket in the cover groove before bringing the cover to the engine — confirm the gasket is fully seated in its retaining groove around the full perimeter including all corners; a gasket that pops out of the groove at a corner during installation will pinch and tear as the cover is tightened, producing an immediate leak at that corner.
  5. Tighten all cover bolts in the spiral sequence specified by the OEM, working from the centre outward in two passes — first pass hand-tight to seat the gasket uniformly, second pass to the OEM torque specification — typically 8–12 Nm for aluminium heads and 6–10 Nm for polymer covers; never exceed the specified torque as the plastic inserts in polymer cover bolt holes crush permanently under overtorque, making correct sealing impossible on any future gasket replacement.
  6. Install the new VALVE COVER (VAG/PORSCHE 059103469AR), reconnect all PCV hoses, sensors, solenoids, and ignition coils disturbed during removal, allow any RTV to cure for the OEM-specified time before starting the engine, start the engine and run to operating temperature, then inspect the full cover perimeter and all disturbed connections for oil seepage before returning the vehicle to service.
Tools: plastic gasket scraper, torque wrench (low-range, 0–25 Nm), brake cleaner and lint-free cloths, RTV sealant of correct specification, straight edge and feeler gauge for cover flatness check.
Frequently Asked Questions
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Should the complete valve cover be replaced when only the gasket has failed, or is gasket-only replacement sufficient?
Gasket-only replacement is the correct first repair when the cover body is undamaged and the sealing flange is confirmed flat to within 0.1 mm measured with a straight edge. The cover body itself has an indefinite service life on aluminium and steel designs under normal operating conditions. Cover replacement is necessary when the flange is warped beyond the flatness specification from overtightened bolts, when the cover body is cracked, when integrated spark plug tube seals cannot be replaced separately, or when the integrated PCV baffle is blocked and non-serviceable. ok.parts supplies complete valve covers and gasket-only kits at wholesale MOQ from 31.22 USD per unit.
Why does the valve cover oil leak recur quickly after gasket replacement on some engines?
Recurring valve cover leaks after gasket replacement have four common causes: the cover flange is warped from previous overtightening and cannot compress the new gasket uniformly — measure flatness before fitting the new gasket; the bolt torque was incorrect — too high strips the bolt hole inserts in polymer covers, too low leaves the gasket incompletely seated; RTV was not applied at the cam seal corners and T-junctions where the formed gasket alone cannot seal; or elevated crankcase pressure from a blocked PCV system is forcing oil past a correctly fitted gasket — resolve PCV function before attributing a recurring leak to gasket quality.
How does the OEM-equivalent aftermarket unit compare to the genuine OEM part?
OEM-equivalent units in this catalogue replicate the current OEM design geometry and material specification. Quality is verified against OEM cross-reference data. When ordering in bulk, confirm with our team that the specification matches the latest OEM revision for your application.
Is white-label or custom packaging available for wholesale orders?
Yes. ok.parts works directly with the manufacturing facility and can accommodate neutral white-label packaging or fully branded packaging with your company logo, part numbers, and barcode. Minimum order quantities and lead times for custom packaging may differ from standard stock. Contact the team via the inquiry form to discuss your specific requirements.
Frequently Replaced Together
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PartReason for Combined Replacement
Valve Cover Gasket Set
Perimeter gasket and spark plug tube seals		The valve cover gasket set — comprising the perimeter gasket, spark plug tube seals, and any semi-circular cam seal inserts — must always be replaced when the valve cover is removed for any reason. Refitting a valve cover with an old gasket that has taken a compression set guarantees an oil leak on the first heat cycle. On engines where the tube seals are integral to the cover casting, the complete cover replacement is the only way to renew the tube seals.
Spark Plugs
OEM ref. varies by engine		Spark plugs must be removed to access the plug tube seals and are fully accessible during valve cover removal. Any plugs showing oil fouling, worn electrode gap, or carbon deposits should be replaced simultaneously with the cover gasket — refitting oil-fouled plugs with a new cover gasket allows existing misfire conditions to continue and may cause ongoing catalytic converter damage from unburned fuel in the exhaust.
PCV Valve and Hoses
OEM ref. varies by engine		The PCV valve mounted in or on the valve cover and the associated crankcase ventilation hoses are fully accessible during cover removal. A stuck-closed PCV valve or blocked crankcase hose causes excessive crankcase pressure that forces oil past correctly fitted gaskets and seals throughout the engine. Replacing the PCV valve simultaneously with the cover service eliminates crankcase pressure as a cause of recurring gasket leaks and restores the emission control function of the crankcase ventilation system.