BBTV 4660 Engine Piston Ring

Engine Piston Ring for Nissan Applications

This engine piston ring is built for standard-bore 4-cylinder applications and is identified by part number 4660. It uses grey iron and steel rail/stainless exp construction with phosphate and chrome surface treatments for the ring set.

Key Features

• Standard bore size: 89.00 mm / 3.504 in.
• Top ring and second ring use grey iron construction.
• Top ring and second groove are phosphate treated for added surface protection.
• First oil ring uses steel rail/stainless exp material with a chrome surface treatment.
• Designed for 4-cylinder engine configurations.

Detailed Description

Part number 4660 is an engine piston ring set for Nissan 240SX, Altima, Pickup, Axxess, D21, and Stanza applications listed in the fitment data. The ring package is sized for a standard 89.00 mm bore and uses groove dimensions of 1.5 mm for the top and second rings, with a 2.8 mm first oil groove. The material and coating combination is intended to provide consistent sealing and wear resistance in the cylinder block assembly.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Is Used For

• Restoring cylinder compression when ring wear has increased blow-by.
• Addressing oil control issues caused by worn or damaged piston rings.
• Replacing rings during a standard-bore engine rebuild.
• Supporting proper sealing in 4-cylinder Nissan engine assemblies.

Installation Notes and Tips

Verify bore size, groove dimensions, and ring orientation before installation. Clean the piston ring grooves thoroughly and inspect the cylinder walls for wear or scoring before assembly. Confirm the engine matches the listed 89.00 mm standard-bore specification and the fitment shown for the Nissan 240SX, Altima, Pickup, Axxess, D21, and Stanza.

Quality Assurance

Use this part only where the bore, groove sizes, and fitment data match the engine specification. Part number 4660 should be checked against the engine build sheet and measured components before final assembly.