Eagle 137904040 Rotating Assembly for Engines - 8-Cylinder

The Eagle 137904040 is a complete rotating assembly kit designed for 8-cylinder engine applications. Eagle Specialty Products is known for producing high-strength connecting rods and crankshafts for performance and racing engines, offering reliable solutions for street and performance builds.

Complete Assembly Kit Includes:

• Cast steel crankshaft with enhanced fillet radiuses for improved strength and rigidity
• Eagle SIR (Super I-Beam Rod) forged 5140 steel connecting rods
• High-quality pistons engineered for performance applications
• Piston rings with proper end gaps
• Rod and main bearings for complete installation

Eagle rotating assemblies are designed to provide excellent value and reliability for engines producing up to 500 horsepower. These kits are popular among engine builders for street performance, street/strip applications, and moderate racing use. Professional balancing and proper installation by a qualified machine shop is recommended for optimal performance and longevity.