Crankshaft

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About Crankshaft

Replacement Engine Crankshafts for Heavy Equipment

Find replacement engine crankshafts for selected diesel engines used in construction equipment, skid-steer loaders, tractors, and other machinery. FAB Heavy Parts’ crankshaft collection includes crankshafts for a range of engine models, along with related crankshaft components and service tools. Product listings identify applicable engine models, part numbers, and, in some cases, the equipment they fit.

Browse crankshafts for selected Kubota, Caterpillar, Cummins, Perkins, Isuzu, Mitsubishi, Yanmar, Doosan, and Shibaura applications. Examples listed in this collection include Kubota V3800/V3800T, V3307, V2403, V2003, V1903, V2203, and D902 engines; Cummins 6C, ISC, and 6CT8.3 engines; Perkins 1004-series engines; and Caterpillar 3046, 3064, 3054, and C4.4 applications. Availability and exact fitment vary by product.

Find the Right Crankshaft for Your Engine

The crankshaft converts the pistons’ reciprocating motion into rotational motion, transferring engine power to the drivetrain. Because it operates under substantial mechanical loads, selecting the correct replacement is important during an engine repair or rebuild.

Start with the part number from your existing crankshaft or engine parts documentation. Then compare the listed engine model and equipment application. Engine names can cover multiple versions, and crankshafts that appear similar may differ in dimensions, journal specifications, counterweight design, or other details. Do not rely on the equipment brand or engine family alone to establish compatibility.

Crankshaft Parts and Related Service Tools

Alongside crankshafts, this collection includes selected crankshaft dampers and gears, as well as front or rear crankshaft seal installation and removal tools. These products serve different purposes, so review each listing to identify whether it is a replacement crankshaft, a related engine component, or a service tool.

Some listings are identified as new aftermarket replacements, while product descriptions may specify other conditions or designations. Check the individual listing for the stated condition, part number, and application before ordering.

Need Help Finding Crankshaft?

Can't find the replacement part you need? Send FAB Heavy Parts your part number, engine model, or equipment details. Our team can help review your requirements and provide a quotation.

Request a Quote

Frequently Asked Questions

How can I find the right replacement crankshaft for my engine?

Please start with the part number on your original crankshaft or in your engine parts documentation. Then compare it with the engine model and application listed on the product page. If available, please also provide your engine serial number and equipment model. Similar engine models do not always use the same crankshaft, so these details are important when selecting the correct replacement.

Are all products in this collection replacement crankshafts?

No. Along with replacement crankshafts, this collection includes selected related components and service tools, such as crankshaft dampers and seal removal or installation tools. Please check the product title and description carefully to make sure you're ordering the component or tool you need.

How do I know whether a crankshaft is an aftermarket replacement or an original part?

Please check the condition and product description for the individual crankshaft. Some products are explicitly identified as new aftermarket replacements, while others may use different designations. We don't want you to mistake an aftermarket replacement for a genuine OEM part, so please contact us with the product link if you need clarification before ordering.

Should I inspect my existing crankshaft before ordering a replacement?

Yes, please have a qualified technician inspect the crankshaft if you're rebuilding an engine. Important checks include journal condition, measurements against the engine manufacturer's service specifications, and signs of cracking or excessive wear. A visual inspection alone may not confirm whether a crankshaft meets the required dimensions. Please use the appropriate engine service documentation when determining whether the existing part can be reused.

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