Best Engine Oil Restrictors of 2025

The Moroso 22010 Oil Restrictor is designed to reduce power-robbing windage in your small or big block Chevy engines. It's easy to install as it screws into the existing lifter gallery. The orifice size is .0625" diameter, which will help to optimize the flow of oil in your engine. This product comes with two per package, plus two spare O-rings.

This LS Oil Galley Diverter Restrictor Barbell is compatible with all GM Chevy LS Series Engines 1997-2014. It replaces the old worn-out oil passage diverter to prevent oil seepage or oil bypassing the oil filter, which can cause engine failure. It installs easily and comes with 1ea oil passage barbell. Z Whip Parts is an AS9100D and ISO 9001:2015 certified manufacturer that produces aerospace parts, ensuring the highest quality for your vehicle.

Introducing the Boost Monkey Oil Feed Restrictor Fitting, designed to fit GT25R, GT28R, GT28RS, GT30, GT35R, and more turbo models. This AN -4, 7/16"-20UNF fitting comes with a restrictor hole size of 0.9mm (0.035"). The restrictor fitting ensures proper oil flow to the turbo, preventing over-oiling and potential damage to the turbocharger. It also helps maintain optimal oil pressure and lubrication, enhancing the turbo's performance and longevity. With the Boost Monkey Oil Feed Restrictor Fitting, you can ensure the smooth operation of your turbo and enjoy its full potential. Upgrade your turbo system with this high-quality fitting from Boost Monkey.

The Allstar Oil Restrictor Pair is designed for small block/big block Chevy engines. These restrictors replace oil galley plugs, directing more oil to bearings for reduced power loss. With a 0.055" hole, they are made of high-quality aluminum with a hex head design. The package includes extra o-ring seals for added convenience, ensuring a secure fit. By restricting oil flow to the top end, these restrictors optimize lubrication, enhancing engine performance and longevity.

The ICT Billet Oil Restrictor is designed to enhance your engine's performance by replacing the fragile factory plastic barbell with a durable billet option. This upgrade helps to eliminate oil seepage in your oil passages, ensuring that your engine runs efficiently. It is compatible with all GM LS series engines, making it a versatile choice for various models. Additionally, the package includes one oil passage barbell, providing you with everything you need for installation. By opting for this high-performance restrictor, you can maintain optimal oil flow and protect your engine from potential leaks.

The Boost Monkey Turbo Oil Feed Adapter is a high-quality aluminum fitting that allows you to connect a TD04 turbo and other compatible turbos to your engine's oil system. With a 4AN size and M12 x 1.5mm thread, this adapter ensures a secure and leak-free connection. The built-in 1.5mm restrictor helps regulate the oil flow, preventing excessive oil pressure and protecting your turbo from damage. This feature is especially useful for high-performance applications where precise oil control is crucial. Made from durable aluminum, this adapter is built to last and withstand the rigors of turbocharged engines. Upgrade your turbo setup with the Boost Monkey Turbo Oil Feed Adapter and experience improved oil flow and turbo reliability.

The Moroso Oil Restrictor, model 22016, is designed for Chevy engines. This vehicle-specific part, equivalent to OEM number 22016, includes oil restrictors for Chevrolet vehicles. The oil restrictors help regulate oil flow, ensuring proper lubrication and engine performance. With this component, you can maintain optimal oil pressure, prevent over-lubrication, and enhance your engine's longevity. Moroso's Oil Restrictor is a reliable choice to safeguard your Chevy engine's health.

The Moroso Oil Restrictor for Ford 302 Engines is a vehicle-specific part from the United States. With part number 22045 and weighing 0.65 pounds, this engine oil restrictor by Moroso is designed to enhance the performance of your Ford 302 engine. It ensures proper oil flow, preventing excessive oil consumption and maintaining engine health. The vehicle-specific fit guarantees easy installation, tailored to your Ford 302 engine. Weighing only 0.65 pounds, it won't add unnecessary weight to your vehicle.

The Mievlyo LS Oil Plug is designed for various GM models, including Buick, Cadillac, and Chevrolet, specifically those with LS engines ranging from 4.8 to 6.2 liters. This plug is made from high-quality materials, ensuring that it effectively prevents engine oil loss, which can enhance performance and longevity. It serves as a direct replacement for the factory plastic barbell, providing a perfect fit for your vehicle. With an easy installation process, this oil galley plug helps maintain optimal oil flow, ensuring your engine runs smoothly and efficiently.

The LKONWEE Oil Diverter Barbell is a high-quality billet aluminum plug designed to replace the factory plastic barbell in GM LS Series Engines. Compatible with various GM Gen III & IV engines, including popular models like LS1, LS2, LS3, and LS6, this oil diverter plug offers several advantages. Firstly, it has a smaller tolerance and a little taper, allowing for smoother oil flow and preventing the loss of engine oil. Secondly, it effectively prevents dust from entering the oil, ensuring cleanliness and optimal engine performance. Lastly, the 1/4-20 threaded hole aids in easy removal, making maintenance hassle-free. Upgrade your engine's oil system with the LKONWEE Oil Diverter Barbell for enhanced performance and longevity.