23S-15-21290 PIN KOMATSU

The 23S-15-21290 PIN KOMATSU is a machine-specific transmission pin used in selected Komatsu heavy equipment applications. Public parts references identify the same item under both 23S-15-21290 and 23S1521290, describe it simply as a pin, and connect it with transmission-related assemblies rather than large external linkage points. Public catalog data also supports the dimensional note D=10 and L=80, which matches the compact, straight, cylindrical profile visible in your product images.

From the uploaded photos, this part appears as a slotted cylindrical pin with chamfered ends and a consistent machined finish. That visual form is important because it helps distinguish the 23S-15-21290 PIN KOMATSU from longer internal clutch pins such as the nearby 10 x 285 style parts found in related Komatsu assemblies. In practical buying terms, the 23S1521290 part number points to a shorter 10 x 80 transmission pin intended for precise seating inside a clutch or transmission subassembly, not a general workshop fastener.

For e-commerce use, the value of 23S-15-21290 PIN KOMATSU is not just in the name of the part but in the clarity of fitment. Buyers usually search this product after checking a transmission diagram, reviewing a service parts list, or matching a removed component during repair. That is why a strong product page should use both 23S-15-21290 PIN KOMATSU and 23S1521290 naturally, while also explaining where the part is used and why exact matching matters. Public references place this pin in first clutch and transmission-related assemblies across multiple Komatsu machine families.

Product Overview of 23S-15-21290 PIN KOMATSU

Public parts sources consistently identify 23S-15-21290 PIN KOMATSU as a pin with a 10 mm diameter and 80 mm length. That dimensional detail appears across catalog and supplier references and is reinforced by an industry listing that labels the item as a transmission pin in the 10 x 80 format. The dimensional agreement across multiple public listings makes it reasonable to describe this part as a compact internal locating or retaining pin used in Komatsu transmission assemblies.

The most useful technical context comes from the assembly references. Public catalog snippets place 23S-15-21290 in transmission first clutch sections for Komatsu graders such as GD605A-5, GD621R-1, and GD623A-1. Other application references connect the same part number with crane and dump-truck platforms as well. That tells buyers something very important: the 23S-15-21290 PIN KOMATSU is not a generic shelf pin but a defined component used in a repeatable internal transmission arrangement.

One public catalog snippet lists this pin with a quantity of ten pieces in the first clutch group. That detail suggests the part works as part of a repeated internal pattern, where identical length and diameter help maintain proper assembly geometry. For maintenance teams, that matters because they may need multiple pieces during one overhaul rather than ordering a single unit.

What This Komatsu Pin Does in the Assembly

The 23S-15-21290 PIN KOMATSU is associated with first clutch or transmission clutch sections, which means its role is likely tied to locating, supporting, or retaining internal parts in their intended position. Public parts listings do not provide a full functional narrative, but the assembly location itself is very informative. In any clutch-related transmission group, even a small pin can affect alignment, spring positioning, disc arrangement, and the stability of surrounding parts during repeated engagement cycles.

Your images strengthen that interpretation. The part is not shaped like a pivot shaft, bushing sleeve, threaded fastener, or large undercarriage pin. Instead, it has the appearance of a compact spring-style or slotted locating pin designed to fit into a controlled bore. That makes correct dimensions especially important. If a replacement is too loose, too tight, too short, or poorly finished, the surrounding assembly may not hold its intended relationship under load.

In real workshop conditions, this is exactly why buyers search by the full code 23S-15-21290 PIN KOMATSU instead of using vague terms like transmission pin or Komatsu pin. When a clutch housing is already open, technicians do not want uncertainty. They want a part number that matches the machine, the assembly, and the expected dimensions. Public references support that this item belongs to that kind of precision replacement category.

Technical Details and Specifications

Part number formats

The primary searchable format is 23S-15-21290. The alternate compact format is 23S1521290. Public references use both, so a product page should include both versions naturally for better discoverability across search engines, catalogs, and parts inquiries.

Part name

Public listings identify the item simply as a pin. Some references present it in translated form, while catalog results keep the English “PIN” description. That naming consistency is useful because it confirms that 23S-15-21290 PIN KOMATSU is treated across the market as a defined Komatsu pin rather than a broad hardware substitute.

Size

Public parts references describe this item as PIN, D=10 L=80. A separate industry listing also describes 23S-15-21290 as a transmission pin measuring 10 x 80. That makes the most defensible dimensional description for your website: approximately 10 mm diameter and 80 mm length.

Reference weight in KG

One public application page lists the weight of 23S-15-21290 PIN KOMATSU as 0.05 kg. Because public spare-parts databases can vary slightly in how they display shipping or net weight, it is best to present this as a reference weight rather than a warehouse-measured value. Still, 0.05 kg is the clearest published figure available for this part number.

Assembly context

Public catalog references place this pin in first clutch or transmission sections, including grader transmission pages and application pages that show it used in more than twenty equipment-node relationships. One source also shows the part at position 17 in the assembly and lists it in quantity ten, surrounded by clutch-related components such as plates, discs, springs, hubs, snap rings, and dowel pins. That surrounding context strongly supports describing this Komatsu pin as an internal transmission-clutch component.

Compatible Komatsu Models for 23S-15-21290 PIN KOMATSU

Public fitment references connect 23S-15-21290 PIN KOMATSU with several Komatsu machine families.

Crane applications

LW250L-1H
LW250L-1NH
LW250L-1NX
LW250L-1X

Dump truck applications

HD255-5
HD255-5EO

Grader applications

GD605A-5
GD605A-5S
GD611A-1
GD621A-1
GD621R-1
GD623A-1
GD625A-1
GD661A-1
GD663A-2

Additional catalog snippets reinforce these grader applications by placing the same part number in first clutch transmission pages for GD605A-5, GD621R-1, and GD623A-1 serial-number ranges. That makes the fitment picture much clearer for buyers comparing service parts lists during repair planning.

As always with Komatsu transmission components, final confirmation by machine model and serial number is the safest ordering method. Public parts catalogs often separate fitment by serial breaks, and internal drivetrain parts are exactly the kind of items that can change across production ranges. For a commercial product page, the right balance is to list the public model references while also encouraging serial verification before dispatch.

Why Accurate Fit Matters

The 23S-15-21290 PIN KOMATSU may look simple, but parts in clutch assemblies rarely are. A 10 x 80 locating pin works because its diameter, length, surface condition, and seating behavior all match the surrounding bores and parts. If the fit is wrong, the assembly may develop unwanted movement, inconsistent seating, premature wear, or avoidable rework during installation.

This is why exact code matching matters more than broad descriptive searching. A buyer looking for 23S1521290 usually already knows the job is transmission-related. They are not shopping by appearance alone. They need a part that corresponds to the same dimensional callout shown in public references and belongs to the same clutch grouping shown in Komatsu-oriented catalog pages.

It also explains why short pins like 23S-15-21290 PIN KOMATSU should not be confused with other similar Komatsu pin numbers. Public parts listings show multiple nearby transmission pin references with different sizes, such as 23S-15-21280 at 10 x 285 and 22W-15-21290 at 10 x 65. Even though the naming pattern is similar, the size and application are not the same. For buyers and workshops, that makes exact part-number discipline essential.

When Buyers Replace 23S-15-21290 PIN KOMATSU

This part is commonly relevant during transmission rebuilds, first clutch service, internal inspection work, and preventive parts replacement when the assembly is already open. Workshops may replace the 23S-15-21290 PIN KOMATSU because of visible wear, deformation, uncertain service history, or because it is more practical to refresh repeated small components during a clutch repair than to reuse old pins and risk reopening the unit later.

The public assembly snippets showing ten pieces in the clutch group support that real-world maintenance logic. If one of these pins is damaged or worn, technicians may decide to inspect and replace the complete set used in that clutch section. In equipment downtime terms, replacing small matched parts during one service event is usually more efficient than returning to the same assembly after early failure.

E-Commerce Buying Advantages of a Clear Product Page

A strong product page for 23S-15-21290 PIN KOMATSU should answer the questions serious buyers ask first. Is the part number correct? Is the dimensional note known? Is the machine list available? Is the part linked to a transmission or clutch assembly? What is the reference weight? Can it be shipped quickly?

Public data allows you to answer those questions clearly. The part is identified as 23S-15-21290 / 23S1521290, described as a pin, associated with first clutch and transmission sections, listed in 10 x 80 format, and referenced for Komatsu cranes, dump trucks, and graders including LW250L, HD255, and GD-series machines. That combination of search visibility and application clarity is what makes a listing useful for both Google and AI-assisted search experiences.

3GEN Export Supply Message

At 3GEN Export, we supply 23S-15-21290 PIN KOMATSU as an OEM supplier focused on fast response, accurate identification, and dependable export support. For workshops, fleet operators, rebuild specialists, and international spare-parts buyers, speed matters just as much as fitment. When a transmission job is waiting, every extra sourcing day can extend downtime.

That is why we present this product with worldwide delivery in 5 working days. Instead of using inflated language, the better message is practical: 3GEN Export helps buyers source the correct Komatsu transmission pin quickly, professionally, and with export-ready service. For customers managing grader, crane, or dump-truck maintenance, that shorter lead time can make a real difference in planning and machine availability.

Conclusion

The 23S-15-21290 PIN KOMATSU is a compact 10 x 80 transmission pin used in first clutch and related transmission assemblies on selected Komatsu machines. Public references identify the part under both 23S-15-21290 and 23S1521290, list a reference weight of 0.05 kg, and connect it with crane, dump-truck, and grader applications including LW250L, HD255-5, GD605A-5, GD611A-1, GD621A-1, GD621R-1, GD623A-1, GD625A-1, GD661A-1, and GD663A-2.

If your customer needs a clear, search-friendly, commercially usable listing, this is the right way to position the part: exact code visibility, verified public fitment references, realistic dimensional information, and a direct supply message from 3GEN Export as an OEM supplier with worldwide delivery in 5 working days.

Manufactured in Turkey, these products are made using the latest technologies and built to meet the highest international standards. Each machine is a high-quality copy of the original, ensuring durability, precision, and performance that you can rely on for modern construction and metalworking projects.