Premium Cummins Crankshafts for Heavy-Duty Engines: From 4BT to QSK60 Series.

Description

Cummins Crankshafts: High-Performance Solutions From 4BT to QSK60 Series diesel engine

Reliable. Forged. Precision-Engineered for Mining and Heavy-Duty Industrial Power.

In the demanding world of mining, marine, and power generation, your engine’s heart must be indestructible. At GRT Tech（GRT）, we specialize in providing premium-grade Cummins K Series crankshafts, including the ISF,4B,6B,QSB,M11,NT855,K19, K38, and K50 series. Designed to withstand extreme torque and 24/7 operations, our crankshafts ensure your machinery stays in motion, minimizing costly downtime.

Why Choose Our Cummins K Series Crankshafts?

When it comes to heavy-duty engines like the KTA19, KTA38, and KTA50, quality is not an option—it is a necessity. Our products are engineered to meet or exceed OEM specifications.

• Premium Forged Steel: Unlike standard cast iron, our K-series crankshafts are manufactured from high-tensile forged steel for maximum fatigue resistance.

• Induction Hardened Journals: Each journal undergoes rigorous induction hardening to ensure superior wear resistance and extended bearing life.

• 100% Dynamic Balancing: We eliminate engine vibration at the source. Every unit is dynamic-balance tested to guarantee smooth operation and protect your engine block.

• Precision Machining: Utilizing advanced CNC technology, we achieve micron-level tolerances for oil holes and journals, ensuring perfect lubrication flow.

Explore Our Cummins K-Series Collection

Cummins K19 / KTA19 Crankshafts

The workhorse for mining trucks and industrial excavators. We stock both genuine and high-quality aftermarket K19 crankshafts designed for high-load cycles.

• Common Applications: Komatsu dump trucks, marine propulsion, and construction machinery.

Cummins K38 / KTA38 Crankshafts

Engineered for the K38 V12 engine, these crankshafts are built to handle massive horsepower in power generation and offshore drilling rigs.

• Key Feature: Exceptional torsional rigidity for stable power output.

Cummins K50 / KTA50 Crankshafts

The pinnacle of Cummins heavy-duty power. Our K50 crankshafts support the massive 16-cylinder configuration, providing the backbone for the world’s largest mining fleets.

• Reliability: Tested for extreme thermal stress and high-pressure environments.

Technical Specifications & Cross-Reference

To help you find the exact match for your engine, refer to our common Cummins Part Number reference table:

Part Name	Part No.	Part Name	Part No.
CRANKSHAFT, K38	4912005	CRANKSHAFT,ENGINE	3819624
cummins CRANKSHAFT	4917120	CRANKSHAFT,ENGINE WITH GEAR	3908031
CRANKSHAFT,ENGINE S.S	4925762	CRANKSHAFT,ENGINE WITH GEAR	3908032
CRANKSHAFT,ENGINE	4934566	CRANKSHAFT,ENGINE WITH GEAR	3918986
CRANKSHAFT，ENGINE	4938752	BEARING CRANKSHAFT THRUST	3944168
CRANKSHAFT,ENGINE	4980462	CRANKSHAFT,ENGINE	3944243
CRANKSHAFT,ENGINE	4981642	CRANKSHAFT,ENGINE	3965008
CRANKSHAFT,ENGINE	5289840	CRANKSHAFT,ENGINE	3968066
CRANKSHAFT,ENGINE	5301009	CRANKSHAFT,ENGINE	4095435
CRANKSHAFT,ENGINE S.s	5340179	CRANKSHAFT,ENGINE	4330732
CRANKSHAFT,ENGINE	5349603	CRANKSHAFT,ENGINE	4371597
CRANKSHAFT,ENGINE	5375374	CRANKSHAFT,ENGINE	4900899
CRANKSHAFT,ENGINE	5440758	CORE-CRANKSHAFT, K50	4912004
CRANKSHAFT,ENGINE	5443112	CRANKSHAFT, K38	4912005
CRANKSHAFT,ENGINE	5446857	Cummins CRANKSHAFT	4917120
CRANKSHAFT,QST30	3092922	CRANKSHAFT,ENGINE S.s	4925762
CORE-CRANKSHAFT, K38	3176423	CRANKSHAFT,ENGINE	4934566
CRANKSHAFT,ENGINE	3176424	CRANKSHAFT,ENGINE	4938752
CRANKSHAFT,ENGINE	3331586	CRANKSHAFT,ENGINE	4980462
CRANKSHAFT,ENGINE	3347569	CRANKSHAFT,ENGINE	4981642
CRANKSHAFT,1 CYL CPR	3558749	Cummins CRANKSHAFT	5264841
CRANKSHAFT,1 CYL CPR	3558794	CRANKSHAFT,ENGINE	5288946
Cummins CRANKSHAFT	3630076	CRANKSHAFT,ENGINE	5313645
CRANKSHAFT,ENGINE WIGEAR	3642870	CRANKSHAFT,ENGINE	5362421
CRANKSHAFT,ENGINE	3647087	CRANKSHAFT,ENGINE	5362422
CRANKSHAFT,ENGINE	3648618	CRANKSHAFT,ENGINE	5362423
CRANKSHAFT,ENGINE	3648630	CRANKSHAFT,ENGINE-JP	C6204311201
CRANKSHAFT,ENG ss to 492364600	3681911	CRANKSHAFT,ENGINE ISM11	3042800
CRANKSHAFT,ENGINE	3691444	CRANKSHAFT,ENGINE (V28)RH ROT	3050368
CRANKSHAFT,ENGINE S.s	3692430	CRANKSHAFT 1 CYL NEW 3558749	3064291
CRANKSHAFT,ENGINE	3697859	CRANKSHAFT,ENGINE(N14)	3089796
CRANKSHAFT,ENGINE S.s	3697861	CRANKSHAFT,QSK45 s.STO	3089797
CRANKSHAFT,ENGINE	3698239	CRANKSHAFT,QSK60 s.s	3089962
CRANKSHAFT,ENGINE	3698242	CRANKSHAFT,QSK45	3089963
CCEC K19 Crankshaft	3099881	DCEC 6BT Crankshaft	3907804
CCEC K19 Crankshaft	3418898	DCEC 6CT Crankshaft	3917320
CCEC M11 Crankshaft	3073707	DCEC crankshaft	2830476
CCEC K38 Crankshaft	3096362	DCEC crankshaft	2831067
CCEC NT855 CUMMINS	3049024	DCEC crankshaft	3917320
CCEC NT855 CUMMINS	3608833	DCEC crankshaft	3929037
CCEC NT855 CUMMINS	3051132	DCEC crankshaft	3965010
CCEC NT855 CUMMINS	3044767	DCEC crankshaft	3974538
CCEC NT855 CUMMINS	3418949	DCEC crankshaft	3974539
CCEC K38 Crankshaft	3630075	DCEC crankshaft	4896766
CCEC K38 Crankshaft	3630059	DCEC crankshaft	3929036
CCEC K38 Crankshaft	4099004	DCEC crankshaft	3929037
CCEC K50 Crankshaft	4098998	DCEC crankshaft	3965010
ISF2.8 Crankshaft	5264231F	DCEC crankshaft	3968177
ISF3.8 Crankshaft	5261376F	DCEC crankshaft	3974539
Cummins Crankshaft	2830476	DCEC crankshaft	4934862
M11 Crankshaft	3073707	DCEC crankshaft	4989436
Cummins Crankshaft	3096362	DCEC crankshaft	4999725
Cummins Crankshaft	3608833	DCEC crankshaft	5254839
Cummins Crankshaft	3608833	DCEC crankshaft	5267496
XCEC Crankshaft	3073707X	CORE-CRANKSHAFT,QSK60	3092921

(Note: If your part number is not listed, contact our technical team for a compatibility check.)

Global Logistics & Export-Standard Packaging

We understand that a crankshaft is a precision instrument. To ensure it arrives in perfect condition at your mining site or workshop:

1. Anti-Rust Treatment: Every crankshaft is coated with industrial-grade anti-rust oil.

2. Reinforced Packaging: We use Export-Standard Fumigated Wooden Cases with internal supports to prevent bending or surface scratches during sea or air freight.

3. Fast Dispatch: With a deep inventory of K-series parts, we offer rapid shipping to Southeast Asia,the Middle East,Africa, South America, Australia and CIS countries.

Frequently Asked Questions (FAQ)

Q1: How do I verify the compatibility of a K19 crankshaft?

A: The most reliable way is providing the Engine Serial Number (ESN) or the specific Part Number stamped on your old crankshaft. Our team can cross-reference this in the Cummins QuickServe system.

Q2: What is the difference between forged steel and cast iron crankshafts for K-series?

A: Forged steel offers significantly higher tensile strength and is essential for the high-torque demands of K38 and K50 mining applications. Cast iron is rarely recommended for these heavy-duty series.

Q3: Do your crankshafts come with a warranty?

A: Yes, all our Cummins K-series crankshafts come with a 6-month professional warranty against manufacturing defects.

Contact Us for a Bulk Quote Today

Are you a wholesaler or a mine fleet manager? We offer competitive tiered pricing for bulk orders of Cummins K-series engine parts.