This Carrillo connecting-rod bolt is selected by exact manufacturer part number SCR4245-4 for an engine-family and rotating-assembly-specific build. It is not assigned vehicle YMM from an engine code alone, so match the exact engine generation, rod length, crank journal, pin diameter and width, bearing, piston, fastener, clearance, and build target before ordering.

Fitment

Specifications

What’s Included

One new Carrillo product in the exact configuration and quantity identified by manufacturer part number SCR4245-4. Rods, bolts, bearings, bushings, pistons, pins, rings, tools, lubricant, and companion components are included only when expressly stated for this exact part number.

About Carrillo

Carrillo develops forged connecting rods, high-performance rod fasteners, measurement tools, and related rotating-assembly components. Correct selection remains exact-engine, exact-dimension, exact-interface, and exact-part-number specific.

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Browse the Carrillo collection for related connecting rods and engine hardware.

Frequently Asked Questions

How do I confirm these Carrillo rods match my engine build?
Match the exact Carrillo part number, engine family and generation, rod length, crank journal, pin diameter and width, bearing, piston compression height, fastener, target compression ratio, and every required clearance with the engine builder.

Do the rods or bolts need to be measured during assembly?
Yes. Verify every applicable journal, bearing, pin, side, piston, deck, and valve clearance. Use the specified lubricant and measure rod-bolt stretch when required rather than substituting an unverified torque value.

Is balancing required for a performance rotating assembly?
The engine builder should inspect, measure, weight-match, and balance the complete rotating and reciprocating assembly for the exact crankshaft, pistons, pins, rings, bearings, rods, fasteners, RPM range, and power target.

Installation Instructions

Follow the current Carrillo instructions, engine builder specifications, and factory service information for this exact part number. Work in a clean controlled environment, inspect and measure every component, verify bearing and pin fit, confirm rotating and piston-to-valve clearances, use the specified lubricant and fastener-stretch procedure, balance the complete assembly, rotate the engine by hand, prime the oiling system, and verify oil pressure before startup. Professional machining and engine assembly are strongly recommended.