Eagle 137314155 8-Cylinder Engine Rotating Assembly Kit

The Eagle 137314155 is an 8-cylinder engine rotating assembly kit from Eagle Specialty Products, one of the most trusted names in high-performance engine component manufacturing. Designed to simplify your engine build, this rotating assembly brings together the core reciprocating components needed to get your engine turning reliably and efficiently.

What's Included:

• Crankshaft (cast steel or forged, application-dependent)
• Connecting rods — Eagle SIR I-Beam or H-Beam, depending on configuration
• Pistons sized to application
• Piston rings
• Rod and main bearings

Key Features:

• Factory test-fitted: Eagle rotating assemblies are assembled and verified in-house to ensure proper fitment and component compatibility before shipping
• 8-cylinder application: All eight cylinder sets are included in a single kit, streamlining the engine build process
• Quality components: Eagle sources bearings from industry-leading suppliers such as King or Clevite, and rings are matched to the intended application
• Balanced or unbalanced options: Eagle offers assemblies pre-balanced at the factory or unbalanced for custom machine shop balancing — verify the configuration of this specific part number before ordering
• Externally balanced assemblies from Eagle typically include a harmonic damper and flexplate from Pioneer

Eagle Specialty Products is the largest aftermarket connecting rod manufacturer in the world, and their rotating assembly kits are a go-to choice for street, strip, and performance engine builders looking for a reliable, value-driven solution. Confirm specific stroke, bore, rod length, and compression ratio details with your supplier to ensure this assembly matches your engine build requirements.