BBTV 4790 Engine Piston Ring

Engine Piston Ring Overview

Engine piston ring 4790 is a standard-size ring set for 3.661-inch (93.00 mm) bores. It is built with grey iron top and second rings, plus a steel rail/stainless expander oil ring design for controlled oil management and sealing performance.

Key Features

• Part number 4790 for direct catalog identification
• Standard oversize specification for 3.661-inch / 93.00 mm bore applications
• Grey iron top ring and grey iron second ring construction
• Chrome-treated oil ring rail with stainless expander
• Phosphate surface treatment on the top and second rings
• Fits 8-cylinder engine applications

Detailed Description

This engine piston ring is specified for a range of Chrysler, Dodge, Jeep, Cadillac, and Mitsubishi applications, including 2007 Chrysler Aspen, 2000-2007 Dodge Dakota, 2002-2007 Dodge Ram 1500, and 1999-2007 Jeep Grand Cherokee. The 4790 ring package uses grey iron for the compression rings and a chrome-treated oil control design to support ring sealing and oil control in compatible 3.661-inch bore engines. The phosphate finish on the compression rings adds a protective surface treatment, while the standard bore sizing helps match original engine dimensions without oversize machining.

What It Is Used For

• Restoring compression in worn cylinder bores
• Reducing oil consumption caused by ring wear
• Improving crankcase sealing and combustion control
• Replacing damaged or heat-worn piston rings during engine service
• Supporting rebuild work on 8-cylinder engines with 93.00 mm bores

Installation Notes and Tips

Verify bore size, ring groove dimensions, and cylinder condition before installation. This part number 4790 is listed for standard bore applications, so cylinder measurements should match the engine specification before assembly. Follow the engine builder’s ring gap and break-in procedures for the specific application. Fitment includes 2007 Chrysler Aspen, 2000-2007 Dodge Dakota, 2000-2007 Dodge Durango, 2002-2007 Dodge Ram 1500, 2006-2007 Jeep Commander, 1999-2007 Jeep Grand Cherokee, 1996-1997 Jeep Grand Cherokee, 2006-2007 Mitsubishi Raider, 1996-1997 Jeep Cherokee, 1997 Jeep Wrangler, 1994-1996 Cadillac DeVille, 1993-1996 Cadillac Eldorado, 1993-1996 Cadillac Seville, and 1993 Cadillac Allante.

Quality Assurance

Part number 4790 is cataloged with detailed material and surface-treatment specifications to support accurate engine rebuild selection. Confirm the bore, groove, and application details against the engine before assembly.