Eagle 14129040 8-Cylinder Engine Rotating Assembly Kit

The Eagle Specialty Products 14129040 is a complete engine rotating assembly kit engineered for 8-cylinder applications. Eagle Specialty Products is one of the most recognized names in performance engine building, offering rotating assemblies that are test-fitted in-house to ensure proper component fitment and compatibility right out of the box.

Eagle rotating assembly kits are designed to deliver a complete bottom-end solution, eliminating the need to source individual components separately. Each kit is built around precision-matched parts to support a wide range of performance levels, from street builds to demanding strip applications.

Kit Contents May Include:

• Crankshaft (cast or forged, application-dependent)
• Connecting rods (I-Beam or H-Beam, application-dependent)
• Pistons with rings (hypereutectic or forged, application-dependent)
• Rod and main bearings
• Harmonic damper and flexplate (externally balanced assemblies)

Eagle Rotating Assembly Features:

• Components are test-fitted at the factory for quality assurance
• Available in balanced and unbalanced configurations
• Balanced assemblies (part numbers beginning with "B") require no additional balancing
• Unbalanced assemblies must be balanced by a qualified machine shop prior to installation
• Internally balanced assemblies do not include flexplate or harmonic damper
• Externally balanced assemblies include a Pioneer flexplate and harmonic damper
• Wide selection of compression ratios and bore sizes available across the Eagle lineup

Eagle Specialty Products delivers performance-matched rotating assembly kits built from quality name-brand components, making them a popular choice for engine builders seeking a cost-effective foundation for street, street/strip, and competition 8-cylinder builds.