BBTV 5485 Engine Piston Ring

Engine Piston Ring for Ford F-600

This engine piston ring set is built for the 4.050-inch bore and standard oversize specification used in compatible Ford heavy-duty engine applications. Part number 5485 is a direct-fit piston ring option for service work that requires precise groove matching and consistent sealing performance.

• Standard oversize configuration for 4.050-inch bore applications
• Grey iron top ring and second ring for stable wear characteristics
• Chrome-treated first oil ring surface for improved ring land contact
• Phosphate surface treatment on the top and second rings
• Designed for 8-cylinder engine configurations

Detailed Fitment and Construction

Part number 5485 uses a grey iron top ring and grey iron second ring, paired with a steel rail and stainless expander first oil ring. The ring pack is sized with a 3/32 top groove, 5/64 second groove, and 3/16 first oil groove, making it a fitment-focused choice for engine rebuilds that need the correct ring profile and bore specification. Fits 1980-1991 Ford F-600, N/A. This part cross-references Monroe Shocks & Struts (e.g., 700NP-20, 700P) for the same application.

Common Repair Uses

• Restores cylinder sealing when compression has dropped
• Addresses oil control issues caused by worn rings
• Helps reduce blow-by in worn engine assemblies
• Supports rebuilds that require standard bore ring dimensions

Installation Notes and Quality

Verify bore size, groove width, and ring end gap before installation. Clean the piston ring grooves thoroughly and confirm the ring pack matches the engine specification before assembly. Quality is supported by the listed material and surface-treatment details, including chrome and phosphate finishes for the ring set.