4TNV94L crankshaft 129908-21000 129902-21000 Diesel Engine Replacement Spare Parts Aftermarket for Yanmar
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PARTS DESCRIPTION
Product Overview
The crankshaft converts the pistons’ reciprocating movement into rotational output and carries repeated combustion loads through its main and connecting rod journals. The 4TNV94L crankshaft is intended for customers repairing or rebuilding Yanmar 4TNV94L diesel engine applications, with selection based on the confirmed engine or component configuration.
Because selection depends on journal dimensions, stroke configuration, flange and gear interfaces, bearing specification, and part number, confirming the exact configuration before installation is important. Where an OEM reference is listed, use it with the component and model information as a cross-check.
Product Information
Product: crankshaft
Engine Model: 4TNV94L
Part Number: 129908-21000 129902-21000
Brand: ipartkits
Compatible With: For Yanmar 4TNV94L Engine
Why This Part Matters
A crankshaft with the wrong journal size, flange configuration, gear interface, or engine version may not fit the existing bearings and connected components correctly. Correct journal dimensions, bearing fitment, stroke configuration, and balance relationship are essential for smooth rotation and stable support inside the engine block.
Compare the replacement with the part before assembly, especially where dimensions, interfaces, or version changes may affect fitment.
Key Features
- Can be checked against OEM reference numbers before order confirmation
- Compatible rebuild parts can be sourced together for coordinated engine repair
- Designed for the corresponding engine crankshaft layout and journal arrangement
- Supports correct installation with compatible main and connecting rod bearings
- Suitable for professional diesel engine overhaul and crankshaft replacement
- Specified for matching front and rear crankshaft connection points
Fitment & Ordering Note
Crankshaft specifications may vary by engine generation, journal size, and application. Confirm the part number and compare key dimensions before ordering, especially when the existing crankshaft has been previously ground or modified.
Related Engine Parts
Matching main bearings, connecting rod bearings, thrust washers, oil seals, connecting rods, and other bottom-end rebuild parts are also available.
Why Choose
supplies diesel engine replacement and rebuild parts worldwide, with model and part-number verification support before shipment.
- 24-month warranty support
- MOQ 1 for flexible ordering
- 1–5 day dispatch for available stock
Need Help Confirming Fitment?
Send us the engine model, OEM number, or clear photos of the part, and our team will help verify the correct replacement before ordering.