Cummins 6B Engine Parts for Canada - Connecting Rod Section

Connecting Rod Components for Cummins 6B Engines

The connecting rod assembly in the Cummins 6B engine plays a critical role in transforming the reciprocating motion of the pistons into the rotational power needed to drive the crankshaft. This section covers a full range of replacement and service components for both non-fractured (traditional two-piece) and fracture-split connecting rods used in Cummins 6B, 6BT, and compatible ISB and QSB series engines.

Whether you are performing a complete engine rebuild or replacing individual wear components, maintaining proper connecting rod integrity ensures optimal power transfer, balanced engine operation, and long-term durability. Diesel Pro Power supplies OEM-quality bearings, bushings, and bolts to keep your Cummins B Series engine performing at its best.

Bearing Sets for Cummins 6B Connecting Rods

Connecting rod bearings provide a smooth, durable interface between the connecting rod and crankshaft journal. Over time, high loads and oil contamination can cause wear, making timely replacement essential.

Standard Size Bearing Sets – Non-Fractured Rods

Designed for earlier 6B engines using traditional non-fractured connecting rods, these bearings are supplied as matched upper and lower shells to service one rod. They are precision-machined for standard crankshaft journal diameters, ensuring proper oil clearance and smooth operation.

Oversize Bearing Sets – Non-Fractured Rods

Available in 0.25 mm and 0.50 mm oversizes, these bearings are used when the crankshaft journal has been ground undersize during reconditioning. The increased bearing thickness restores proper fit and oil clearance.

Standard Size Bearing Sets – Fracture-Split Rods

Fracture-split connecting rods, used in later-model Cummins B Series engines, are manufactured with a unique break-surface cap-to-rod interface for superior alignment. Standard-size bearing sets for fracture-split rods maintain OEM fit and load capacity.

Oversize Bearing Sets – Fracture-Split Rods

Available in 0.25 mm and 0.50 mm oversizes, these bearings match reconditioned crankshafts and ensure correct lubrication film thickness under load.

Connecting Rod Bushings for Cummins 6B Engines

The connecting rod bushing is a precision-machined sleeve located in the small end of the rod, supporting the piston pin. Over time, bushing wear can lead to excess clearance, piston noise, and accelerated pin wear. Our high-quality bronze bushings for 6B, 6BT, ISB, and QSB engines provide:

• Superior oil retention for consistent lubrication

• Precision bore sizing for correct piston pin fit

• Durable material composition for extended service life

Replacing worn bushings during overhaul ensures quiet piston operation and reduces stress on the piston and rod assembly.

Connecting Rod Cap Bolts for Cummins 6B Engines

Cap bolts secure the connecting rod cap to the rod body, clamping the bearing shells firmly in place. Because they are subjected to extreme cyclic loads, they should be replaced whenever rods are reassembled to maintain proper clamping force and prevent cap movement.

Cap Bolts for Non-Fractured Rods

Used on earlier Cummins B Series engines, these bolts are designed for traditional two-piece rods. They provide the tensile strength needed to withstand combustion forces and high engine speeds.

Cap Bolts for Fracture-Split Rods

Fracture-split rods require a specific bolt design to match the irregular mating surface created during manufacturing. These bolts maintain precise alignment and load distribution, critical to rod stability.

Choosing the Correct Connecting Rod Components

When selecting connecting rod parts for your Cummins 6B engine, always verify:

1. Rod Type – Determine whether your engine uses non-fractured or fracture-split rods, as bearings and bolts are not interchangeable.

2. Bearing Size – Measure crankshaft journal diameters to confirm if standard or oversize bearings are required.

3. Bushing Condition – Inspect piston pins and rod bushings for wear; replace bushings during major overhauls.

4. Bolt Integrity – Always install new cap bolts during rod reassembly to maintain OEM torque and stretch specifications.

By matching components to your exact engine configuration, you ensure proper lubrication, quiet operation, and long-term reliability.

Why Choose Diesel Pro Power for Cummins 6B Connecting Rod Parts

With over 40,000 satisfied customers worldwide, Diesel Pro Power supplies Cummins 6B connecting rod components that meet or exceed OEM specifications. Our inventory is organized by engine model for quick selection, with global shipping available to keep your equipment running anywhere in the world. Every product is backed by expert support to ensure you get the correct part the first time.