Need genuine quality 221-9360 or 337-0201 without the wait? We take 42CrMo forgings sourced from a top-tier Chinese mill, machine every CAT C15 crankshaft on our own line, and keep the journals within 0.005 mm roundness. It bolts straight into CAT 356C/D, 374DL excavators and 980G loaders, or C15 generator sets. In certain cases, the C15 engine platform is adapted for marine auxiliary systems, though such applications usually require CAT marine-specific technical support.

Product Specifications

ENGINE NO	C15	Gross weight(kg)	183.4
OEM/PART NO	221-9360,337-0201	Length(mm)	1209.4
Crankshaft Material	Forged steel 42CrMo	Main journal(mm)	120.67
Engine type	diesel engine	Crankpin journal(mm)	97
Application		Stroke(mm)	171.44
Anti-rusty Coating	Yes	Hardness(HRC)	HRC52-58

Product Highlights

Forged Strength – 42CrMo steel forging provides high tensile strength and better fatigue resistance compared to cast iron alternatives.

Extended Service Life – Induction-hardened surface layer (approx. 3–5 mm) with hardness HRC 52–58 ensures wear resistance.

Precision Machining – Journals are ground to fine tolerances, improving smoothness and reducing bearing wear.

Balanced Performance – Each unit passes dynamic balance tests to keep vibration at a minimum.

OEM-Compatible – Designed to match CAT specifications for a direct fit.

Supplied Gears - We supply the gears to fit this CAT C15 crankshaft and take care of the installation.

Quality & Testing

Every CAT C15 crankshaft goes through multiple steps before leaving the factory:

Forging and heat treatment for strength and toughness
Induction hardening and tempering for consistent hardness
Journal grinding for accuracy
Ultrasonic and magnetic inspections to detect hidden flaws
Dynamic balancing with residual imbalance ≤10 g·cm/kg

If required, third-party inspection reports are available to confirm compliance with key standards.

CAT C15 crankshaft ISO certification

Applications

Compatible models for CAT C15 crankshaft：

Excavators: CAT 356C, 356D, 374DL

Wheel Loaders: CAT 980G

Generator Sets: CAT C15 diesel gensets

Other Power Units: In some cases, C15 engines are modified for auxiliary marine systems (such as emergency generators), subject to CAT marine technical support.

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Packaging & Delivery

Each CAT C15 crankshaft is packed in plywood or raw wood, coated with rust-proof oil, and fitted with protective caps. Standard shipments are arranged by sea, while urgent air delivery is also possible. Stock models are usually available for dispatch within a week.

(Plywood is used by default. raw wood is available at an additional cost.)

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FAQ (Answering Common Questions)

Q: What is the difference between forged steel and cast iron crankshafts?

A: Forged steel offers higher strength and toughness, making it more reliable for heavy-duty applications compared to cast iron.

Q: Does the part number 221-9360 and 337-0201 refer to the same crankshaft?

A: Yes, both numbers are valid OEM references for the CAT C15 crankshaft.

Q: Can this crankshaft be used for marine engines?

A: The C15 engine is sometimes adapted for marine auxiliary use, but for certified marine systems you should confirm with CAT marine.

Q: Do you provide test reports?

A: Yes, we can supply internal inspection results and third-party reports upon request.

Q: What is the warranty policy?

A: All crankshafts come with a 12-month warranty covering manufacturing and material defects.

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