RANSOTO Oil Separator Cover & Camshaft Expansion Plug Kit for Mercedes M272/M273 (Black Cover, 65mm + 30mm Plugs) - Direct Fit

RANSOTO's four-piece oil separator cover and camshaft expansion plug kit is a direct-fit replacement set for many Mercedes M272 and M273 gasoline engines, restoring crankcase ventilation sealing and rear camshaft plug integrity.

This kit bundles a black plastic oil separator cover with metal mounting inserts plus one large 65 mm expansion plug and two small 30 mm plugs designed to replace worn or leaking crankcase ventilation and rear sealing parts on selected Mercedes-Benz models (C‑class, E‑class, ML, GL, SLK, and others) equipped with M272 or M273 engines. It matches common factory reference numbers so you can confirm compatibility by checking your engine code and original part stamps before purchase.

Which Mercedes models and engine codes will this kit fit?

The kit is engineered for specific M272 and M273 gasoline-engine variants found across a range of Mercedes vehicles from mid-2000s to early 2010s. It is not suitable for AMG, diesel, M276, or M278 engines, so verify the engine code stamped on your vehicle first.

• Compatible models include: C230/C280/C300/C350, CLK/CLS, E350/E550, ML350/ML450/ML550, GL/GLK/G, SLK, S‑class, SL and others in the 2005–2015 range.
• Engine codes covered: selected M272.x and M273.x families (examples: M272.920, M272.940–.977 series and M273.923, .960–.971 series).
• Not for: M276/M278, AMG-designated engines, or diesel powerplants.

What original part numbers does this kit replace and how should I confirm fit?

The oil separator cover and plugs correspond to common factory reference numbers used on many Mercedes V6 gasoline engines. Always compare the original numbers and physical dimensions on your engine to ensure a match before installing.

• Cover reference: replaces parts listed as 2720100631 (and A2720100631 variants).
• Large rear plug: replaces 0009985690 (A0009985690 equivalent).
• Two smaller plugs: replace 0009986590 (A0009986590 equivalents).

What materials and components are included, and what tools or extras will I need?

The kit contains the core replacement pieces but omits some installation hardware and accessories. The cover uses a durable plastic body with metal inserts for secure bolt retention; the plugs rely on elastic sealing material to seat in the rear openings.

• Included: 1 black oil separator cover with metal mounting inserts, 1 large 65 mm expansion plug, 2 small 30 mm expansion plugs.
• Not included: mounting bolts, breather hoses, gaskets, or hand tools—these must be provided separately.
• Recommendation: inspect original components and bring removed fasteners or hoses to match replacement needs.

How does replacing these components affect engine ventilation and leak points?

Fitting a new separator cover and fresh expansion plugs restores the physical seal at common crankcase ventilation and rear camshaft locations. While this kit addresses mechanical sealing and breather outlet integrity, subsequent testing for leaks is recommended after installation.

• Restores crankcase breather outlet sealing and helps direct ventilation flow as designed.
• Replaces aged plugs that commonly show localized seepage at the camshaft rear area.
• Installation helps reduce oil migration and external seepage when properly installed and torqued.

Who is this for: This RANSOTO kit is suited to independent mechanics, do-it-yourself enthusiasts, and professional shops maintaining Mercedes-Benz vehicles with compatible M272 or M273 gasoline engines. It’s ideal when the original oil separator cover or rear camshaft plugs are cracked, hardened, leaking, or otherwise compromised, and when the vehicle’s engine code and original part numbers match the references provided. If you’re uncertain about fitment, compare your engine code and the stamped part numbers to the replacements listed or consult a qualified technician before purchase.