3678574 Connecting Rod Bolt Cummins

3678574 – Connecting Rod Bolt Cummins

Product Description

The 3678574 connecting rod bolt is a special mounting bolt used to secure the connecting rod cover to the connecting rods of large series Cummins engines, such as ISX15, QSX15, ISX, QSX, and X15. This component ensures a reliable connection between the lower part of the connecting rod and the cover, which is crucial for the stable operation of the engine under heavy load.

OEM bolts of this type are made from high-quality hardened steel, ensuring durability, stable fit, and long service life.

Key Features

OEM Number: 3678574

Type: Hex Head Connecting Rod Bolt

Application: Cummins ISX15, QSX15, ISX, QSX, X15 engines

Material: Hardened high-carbon/alloy steel

Purpose: Provides a secure connection between the connecting rod and the connecting rod cover in the engine assembly

Quantity in engine: Requires several bolts for a complete replacement (usually a set of 24) – one bolt is intended for one pair of connecting rods (cover + connecting rod).

Applications

The 3678574 bolt is widely used in high-strength Cummins diesel engines, including:

ISX15, QSX15, ISX, QSX, X15

Agricultural, industrial, and heavy-duty equipment

Durable high-volume and high-pressure load units