Connecting rods & Pistons - quality and affordable price page 1 of 5

Heavy-Duty Connecting Rods & Pistons for Diesel Engines

Connecting rods and pistons are core components of every diesel engine’s rotating assembly, responsible for transferring combustion energy to the crankshaft and generating power. Our catalog includes connecting rod assemblies, piston kits, piston cooling nozzles, rod bearings, wrist pin bushings, piston/rod sets, and OEM replacement components for leading engine platforms such as Cummins ISB, ISL, ISX15, QSB, QSC; Detroit Diesel Series 60 & DD15; Volvo D12 & D13; Mack E7; Paccar MX13; Caterpillar C13; International MaxxForce and other high-performance heavy-duty diesel engines.

Why connecting rods and pistons are critical for engine performance

The diesel engine connecting rod and piston assembly operates under extreme pressure and heat, converting combustion force into rotational motion. A worn, bent, or cracked connecting rod can cause severe knock, loss of compression, oil dilution, and catastrophic engine failure. Damaged pistons or worn rings can lead to loss of power, excessive blow-by, high oil consumption, overheating, and reduced fuel efficiency – problems especially critical for long-haul trucks, industrial engines, agricultural machinery, and vocational vehicles requiring maximum reliability.

When selecting new connecting rods or pistons, consider:

• compatibility with engine model, displacement, and OEM reference
• whether you need a full set or individual components
• piston cooling method (oil jets, cooling nozzles, reinforced crowns)
• rod material strength, weight class, and bearing type
• operating conditions such as high load, high temperature, or extended duty cycles

Engineered durability for high-load and high-temperature operation

Our inventory includes both OEM and premium aftermarket components designed for extreme durability. Connecting rods are manufactured from forged or heat-treated steel, built to withstand bending, twisting, and tensile stress under repeated combustion cycles. Pistons feature hardened crowns, precision-machined skirts, and wear-resistant ring grooves that maintain compression even under high boost and elevated exhaust gas temperatures. Many kits also include piston cooling oil nozzles, which help reduce piston crown temperature and extend service life.

Whether you’re rebuilding a Cummins ISX15 long block, replacing a worn Detroit Diesel Series 60 connecting rod, installing new Volvo D12 piston cooling nozzles, or refreshing an older Caterpillar C13 engine, these components help restore peak performance, reduce downtime, and support long-term reliability in demanding applications.