BMW N46 Engine Complete Gasket Set | Genuine & OE-Spec Overhaul Kit

Description

If your BMW N46 2.0L naturally aspirated petrol engine is leaving oil puddles on your driveway, smoking from under the bonnet due to oil dripping onto the exhaust manifold, or losing coolant, a comprehensive gasket overhaul is long overdue. The N46 engine family is notoriously prone to brittle rubber seals as it ages. We supply complete top-and-bottom-end gasket and seal sets engineered specifically for the BMW N46 4-cylinder platform.

Unlike piecemeal repairs that only fix one leak just for another to spring a week later, our complete overhaul kits provide every essential seal required to completely reseal your engine from the valve cover down to the oil pan.

• Comprehensive Coverage: Includes valve cover gasket, spark plug tube seals, valvetronic motor gasket, intake and exhaust manifold gaskets, front and rear crankshaft seals, oil filter housing gasket, oil pan gasket, and all necessary minor o-rings and crush washers.

• High-Temperature Material Resilience: Manufactured from premium fluoroelastomer (Viton) and multi-layer steel (MLS) designed to withstand the high operating temperatures of the N46 block without hardening, cracking, or shrinking.

• Condition: Brand new, premium OE-spec replacement kit manufactured to strict dimensional tolerances for a 100% leak-free seal.

Critical Considerations for N46 Gasket Replacement:

• Valvetronic & Vacuum Pump Seals: The N46 utilizes an advanced Valvetronic system and a rear-mounted vacuum pump. Pay special attention to the vacuum pump O-ring and Valvetronic semi-circular plugs (“half-moons”); these are the primary culprits behind heavy oil leaks that pool near the back of the engine block onto the gearbox.

• Valve Cover Bolt Torque Sequence: When replacing the valve cover gasket, the magnesium or plastic valve cover must be torqued down in a precise criss-cross pattern to a low specific torque spec. Overtightening will crack the cover instantly.

• Chassis Variations (E90 vs. E87 vs. X3): While the core N46 block remains identical, auxiliary routing, oil cooler sandwich plates, and exhaust manifold configurations can vary slightly depending on whether the engine is installed in an E90 3 Series, E87 1 Series, or E83 X3. Providing your VIN is essential to confirm exact kit compatibility.

Workshop Pro-Tip: Don’t skip the liquid gasket in the corners! When installing the new valve cover gasket and oil filter housing gasket, apply a tiny dab of high-temp RTV silicone only at the factory-specified sharp corners (such as the Valvetronic half-moon recesses and timing chain cover joins). Skipping this step is the #1 reason mechanics experience persistent oil seepage right after a fresh gasket job!

Key Features:

• Model-Specific: Precision-engineered for BMW N46B20 4-cylinder petrol engines.

• All-in-One Solution: Eliminates the guesswork and time wasted sourcing individual dealer seals.

• Quality Assured: Built to resist oil degradation, thermal cycling, and coolant breakdown.