BBTV 139 Engine Piston Ring

Engine Piston Ring for V8 Applications

This engine piston ring is built for standard-bore V8 applications with a 4.000-inch cylinder bore and a deep oil groove design. It is listed for a wide range of classic Ford, Chevrolet, GMC, Dodge, and Mercury engines, including Ford F-150, Chevrolet Camaro, and GMC Jimmy applications.

Key Features

• Standard oversize for 4.000-inch engine bores
• Top ring and second ring use grey iron construction
• Phosphate surface treatment on the top and second rings
• Steel rail and stainless expander oil ring design with chrome surface treatment
• Deep oil groove note for compatible engine builds
• Engineered for 8-cylinder applications

Detailed Description

Part number 139 is an engine piston ring set for standard-bore V8 engines that require a 4.000-inch bore and deep oil groove configuration. The ring package uses grey iron for the top and second rings, with phosphate surface treatment on both, while the oil control ring uses a steel rail and stainless expander with chrome treatment. This combination supports consistent ring sealing and oil control in older Ford, Chevrolet, GMC, Dodge, and Mercury engine platforms. Part number 139 is a direct match for many classic truck, van, and performance applications, including Ford F-250, Chevrolet C10, and Dodge D150 engine builds.

What It Is Used For

• Restoring compression in worn engine cylinders
• Reducing oil consumption from ring wear
• Addressing blow-by caused by poor ring sealing
• Replacing damaged or fatigued piston rings during rebuilds
• Supporting proper oil control in deep-groove piston setups

Installation Notes and Tips

Verify cylinder bore size, groove dimensions, and ring end gap before installation. This part is listed for standard bore only, so confirm the engine has not been bored oversize. Follow the engine builder’s ring orientation and break-in procedures for the specific application.

Quality Assurance

Fitment data covers 2,000 vehicle applications across Ford, Chevrolet, GMC, Dodge, Mercury, Lincoln, Buick, Oldsmobile, Pontiac, and Plymouth platforms. This part cross-references Sealed Power (e.g., 272AP, 273AP) for the same application.