BBTV 2M4216 Engine Piston Ring

Engine Piston Ring for 3.622 in Bore

This engine piston ring set is built for standard-bore applications with a 3.622-inch, or 92.00 mm, bore size. It uses plasma moly, chrome, phosphate, steel, grey iron, and stainless steel rail materials to support sealing and wear control in the cylinder.

Key Features

• Standard oversize specification for direct engine rebuild use.
• Top ring uses plasma moly surface treatment for improved wear resistance.
• Second ring uses phosphate treatment with grey iron construction.
• Oil ring design combines steel rail and stainless expansion components with chrome treatment.
• Built for four-cylinder engine configurations.

Detailed Description

Part number 2M4216 is an engine piston ring set for standard-bore service in 3.622-inch applications. The ring package includes a steel top ring with plasma moly treatment, a grey iron second ring with phosphate treatment, and an oil control ring assembly using steel rail and stainless expansion materials with chrome surface treatment. These material and coating choices are used to support cylinder sealing, oil control, and ring durability during engine operation. This part cross-references Monroe Shocks & Struts (e.g., 10525KX, E510K) for the same application.

Fitment includes Toyota 4Runner, Toyota Pickup, Mazda MPV, Mazda B2600, and Toyota Celica applications from the listed model years. For Toyota 4Runner and Toyota Pickup engine rebuilds, 2M4216 provides a standard-bore piston ring solution that matches the specified cylinder dimensions and ring groove design. The same part number 2M4216 also appears in interchange listings for related applications.

What It Is Used For

• Restoring cylinder compression in worn engine bores.
• Controlling oil consumption through the oil ring assembly.
• Replacing worn or damaged piston rings during rebuild work.
• Supporting proper combustion sealing in standard-bore engines.
• Addressing blow-by caused by ring wear or loss of tension.

Installation Notes and Tips

Verify bore size, groove dimensions, and oversize specification before installation. Clean the piston ring grooves thoroughly and confirm ring end gaps against the engine builder’s specifications. Follow the service manual for ring orientation and break-in procedures. Fitment is listed for Toyota 4Runner, Toyota Pickup, Mazda MPV, Mazda B2600, and Toyota Celica applications only as shown in the fitment data.

Quality Assurance

Use this part number 2M4216 as a direct reference when matching piston ring specifications to the engine build. Confirm all measurements against the original components and engine machining details before assembly.