Carrillo SCR5445-6 Pro-H Beam Connecting Rods Nissan TB48 3/8 CARR Bolt

Built to withstand the demands of high-performance and racing applications, these rods are manufactured using Carrillo's proprietary "Carrilloy" steel alloy — a chrome, nickel, moly, vanadium blend that meets all VAR (Vacuum Arc Re-Melt) ASTM standards for maximum strength and consistency.

Key Features:

• Pro-H Beam design — optimized geometry for superior strength-to-weight ratio in high-output applications
• Proprietary Carrilloy steel — chrome, nickel, moly, vanadium alloy meeting VAR ASTM standards
• 3/8" CARR Bolt fasteners — Carrillo's own patented thread-design bolts rated at 220,000 psi UTS (H-11 tool steel) or 285,000 psi UTS (Multiphase™)
• Mar-aged heat treatment — results in 195,000 UTS and 182,000 yield strength while maintaining low notch-sensitivity and ductility
• Oversized forging process — ensures proper grain flow and eliminates surface inclusions
• Double magnaflux inspected — each rod is magnafluxed at least twice during production
• Rockwell hardness tested — every piece validated for heat treat integrity
• Shot peen finished — final controlled shot peen operation relieves tensile stress and improves fatigue life
• CNC probing validation — all critical CNC machines equipped with probing for dimensional accuracy
• Laser-etched job number — individual traceability on every rod
• Made in the USA

CP-Carrillo connecting rods are trusted by professional racers and engine builders worldwide for their unmatched precision, quality control, and reliability. The SCR5445-6 is the ideal choice for builders seeking a serious performance upgrade for the TB48 engine in high-horsepower street, off-road, or competition builds.