Best Breather Engine Valve Covers of 2026

A-Premium Engine Valve Cover is a professional solution for BMW vehicles with engine problems. It is compatible with various BMW models such as 328i, 128i, Z4, 528i, X3, and X5. This valve cover kit is designed to address common engine issues like oil leaks, engine bay smoking, burning oil smell, and misfiring engine. It helps to restore the breather valve operation and save you money on BMW parts. The package includes the main valve cover gasket, spark plug seals, engine valve cover bolts, and an oil filler cap. With A-Premium Engine Valve Cover, you can easily fix your engine problems and enjoy a smoother driving experience.

The A-Premium Valve Cover Kit is designed to fit a wide range of BMW models equipped with the N55 3.0L twin-turbo engine, including popular series like the 328i, 335i, X3, X5, and more from 2011 to 2019. This kit comes complete with the valve cover, gasket set, bolts, and an oil filler cap, all pre-assembled for easy installation, saving you time and hassle. It’s a reliable replacement that helps fix common engine issues such as oil leaks and misfires by restoring proper breather valve function. With this kit, you can maintain your engine's performance while avoiding costly dealer repairs.

The CNRAQR LS Oil Cap is designed to fit a range of Chevrolet and Pontiac models with LS series engines, ensuring a perfect match for your vehicle. Made from lightweight, high-quality aluminum, this cap resists rust and corrosion, giving you a durable and long-lasting part. Its built-in air filter helps keep dust and impurities out of your engine, which can improve performance and protect your engine's health. The included O-ring prevents oil leaks, helping you maintain a clean engine bay and avoid messy spills. This cap combines functionality and durability for a reliable upgrade to your engine.

These valve covers are made of high-quality aluminum material that can resist high temperatures and prevent oil leakage. The covers have a wide application range and are a direct replacement for the small block Chevy engines. They come with a complete set of two covers with bolts, and are easy to use with long bolt style and added inside clearance. The covers have a perimeter 4 bolt pattern, 1/4" billet rail thickness, and 1 1/4" baffled breather hole. The stain oxidation surface finish ensures a strong and durable product with a prolonged lifespan.

The A-Premium Valve Cover is designed to fit a wide range of BMW models from 2012 to 2018, including popular series like 228i, 320i, 328i, 428i, 528i, X1, X3, X4, X5, and Z4 with the 2.0L N20 engine. This kit includes everything you need such as the valve cover, oil filler cap, gasket, bolts, spark plug seals, and an actuator gasket, making installation straightforward. It addresses common engine problems like oil leaks, engine bay smoke, burning oil smells, and misfires, helping restore your engine’s breather valve function. With this kit, you save money compared to buying from BMW and get a reliable fix for your engine’s performance.

The Dyno Racing Valve Cover Adapter is designed for LSX engines including LS1, LS2, LS3, LS6, and LS7, and fits various Camaro, Corvette, and GTO models. This adapter replaces your original oil fill tube, making it easier to maintain your engine's valve cover. Crafted from CNC-machined billet aluminum, it ensures a precise fit and durable performance. Additionally, the included silicone O-ring helps prevent oil leaks, keeping your engine clean and efficient. The top of the adapter is made to accept a -10 AN hose end, simplifying hose installation and improving your setup's overall convenience.