The CUMMINS X15 crankshaft (4925761) is a heavy-duty forged steel component made from 42CrMo steel. As the core rotating part of the X15 engine family, it is built to endure high horsepower, long operating hours, and harsh working environments. This crankshaft is widely used in on-highway trucks such as Peterbilt 579 and Kenworth T680, in large construction equipment like the Komatsu PC4000 excavator, and also in X15-M marine engines and X15-G6 generator sets.

Product Specifications

ENGINE NO	X15	Gross weight(kg)	162
OEM/PART NO	4925761/4925762/4393462	Length(mm)	1258.5
Crankshaft Material	Forged steel 42CrMo	Main journal(mm)	127
Engine type	diesel engine	Crankpin journal(mm)	94
Application		Stroke(mm)	169
Anti-rusty Coating	Yes	Hardness(HRC)	HRC52-58

Features & Advantages

Strong material choice: 42CrMo forging gives the shaft the muscle to handle X15 torque without flex.
Durable journals: Each journal is hardened, so the surface lasts much longer under heavy load. Mechanics often note less bearing wear compared with cast versions.
Precision Machining: CNC finish keeps roundness under 0.005 mm; bearings last longer and oil stays put.
Dynamic Balance: Each 4925761 crankshaft is precision tested to ensure Balanced to ≤10 g-cm/kg.
Good quality at low price: With the quality that can match the original parts, but at a much cheaper price. Developed according to OEM and easy to install
Supplied Gears - We supply the gears to fit this crankshaft and take care of the installation.

Quality Control

Before shipping, every CUMMINS X15 crankshaft (4925761) is checked through:

Ultrasonic and magnetic particle inspection
Hardness and case depth measurement after heat treatment
Dimensional inspection of all journals
Dynamic balance test for stable rotation

Quality records are kept for each batch, and third-party inspection reports can be provided if required.

4925761 ISO certification

Applications

Compatible models for 4925761：

On-highway trucks: Peterbilt 579, Kenworth T680

Excavators: Komatsu PC4000

Marine Engines: Cummins X15-M

Generator Sets: Cummins X15-G6

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Packaging & Delivery

Export-ready plywood cases with rust-preventive coating and plastic journal protectors. Plywood boxes can be replaced with quality raw wood cases at an additional cost if needed. Stock items can usually be shipped within 3 days. Bulk and custom orders follow production scheduling.

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FAQ (Answering Common Questions)

Q: Is this an original crankshaft?

A: No. We are an aftermarket forged-steel crankshaft manufacturer. Each CUMMINS X15 crankshaft is produced to OEM 4925761 dimensions and can be installed as a direct replacement.

Q: What material do you use?

A: 42CrMo forged steel, which offers higher strength and fatigue resistance than cast iron.

Q: What tests are done before shipping?

A: Every crankshaft is checked for dimensions, hardness, ultrasonic integrity and dynamic balance. Over 30 checkpoints are logged.

Q: Do you accept a small trial order?

A: Yes, we often send several pieces first for testing before customers place a larger order.

Q: What after-sales support do you provide?

A: All crankshafts carry a 12-month warranty. If there is any defect, we replace or recall the part at our cost.

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