Carrillo DC7559S-1 Pro-H HD Connecting Rod with 7/16 CARR Bolt for Cummins 5.9L/6.7L

The Carrillo DC7559S-1 is a single Pro-H Heavy-Duty Connecting Rod featuring a cap relief design and premium 7/16" CARR Multiphase bolt, engineered for Dodge Cummins 5.9L and 6.7L diesel engines. Built for high-performance street, strip, and competition applications, this rod delivers exceptional strength, durability, and dimensional precision in demanding, high-boost environments.

Key Features:

• Pro-H H-Beam design with cap relief — reduces stress concentration on rod bolts by allowing improved flex under extreme load
• Billet/oversized forging construction — ensures proper grain flow and eliminates surface inclusions or conversions from the forging process
• Proprietary chrome-nickel-moly-vanadium alloy — meets VAR (Vacuum Arc Re-Melt) ASTM standards for superior material integrity
• Mar-aged heat treatment — delivers a UTS of 195,000 psi with a yield of 182,000 psi while maintaining low notch-sensitivity and ductility
• 7/16" CARR Multiphase bolt — rated at 285,000 UTS, offering outstanding fatigue resistance and repeatable stretch specifications for high-performance use
• CNC-machined with probing validation — all critical dimensions verified at the machine for precise bearing crush and dimensional integrity
• Double magnaflux inspected and Rockwell tested — each rod is magnafluxed at least twice and heat-treat validated before leaving the facility
• Shot-peened finish — final surface treatment adds compressive stress resistance for long service life

Specifications:

• Center-to-Center Length: 7.559 in. (192.00 mm)
• Style: Pro-H
• Bolt Size: 7/16"
• Bolt Type: CARR Multiphase (285,000 UTS)
• Small End (Pin) Width: 1.526 in. tapered (38.76 mm)
• Big End Width: 1.526 in. (38.76 mm)
• Big End Bore: 2.8740 in. (73.00 mm)
• Pin Size: 1.575 in.
• Total Weight: 1,853 g | Rotating: 1,300 g | Reciprocating: 553 g

The DC7559S-1 is a single-rod unit, ideal for replacement or custom builds where individual rods are required. Carrillo has been the recognized leader in custom connecting rod manufacturing since 1963, supplying rods to virtually every major motorsports and high-performance automotive venue worldwide.