Description
The part number A6510160321 (also rendered as A 651 016 03 21) is a genuine Mercedes‑Benz gasket specifically designed for the rocker/valve cover (tappet cover) on certain Mercedes diesel engine variants (for example OM651 series).
Key features & usage:
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It is categorized as a “Gasket / Gasket set, cylinder head cover / rocker cover gasket” in parts catalogues. AUTODOC+2AUTODOC+2
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One listing describes it as “Tappet Cover Packing … A6510160321” and notes compatibility with multiple Mercedes models including A‑Class W176, B‑Class W246/W242, C‑Class W204/W205, CLA/CLS C117/C218, E‑Class W212, GLA‑Class X156 etc. A to Z Auto Parts
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The gasket is typically pre‑formed elastomer or molded seal style to ensure a tight seal between the valve cover and cylinder head, resisting oil leaks and ensuring proper engine top‑end sealing. For example, a “Elastomer Molded Seal A6510160321” is listed by a parts supplier. LLLparts
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To maintain engine integrity and prevent oil leaks or contamination, this gasket should be replaced whenever the valve cover is removed, or if signs of leakage appear.
Compatibility / Fitment Notes:
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Brand: Mercedes‑Benz
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Part No.: A6510160321 (A 651 016 03 21)
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Category: Valve/Tappet Cover Gasket / Rocker Cover Seal
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Vehicles: Common for Mercedes models with OM651 diesel engine (and possibly other engine variants) as indicated by fitment listings. A to Z Auto Parts+1
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Important: When stocking or selling this part, verify the vehicle’s VIN, engine code, chassis and confirm that it indeed uses this gasket part. Some vehicles may require alternate or updated part numbers.
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Installation Tip: Ensure mating surfaces (valve cover and cylinder head) are clean, dry and free of old gasket residue. Torque bolts in correct sequence and to specified values. For optimal sealing replace the gasket every time cover is removed.
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