Confirmed context
Offered as a six-piece piston and cylinder liner kit for Cummins QSL8.9 engines, covering the piston, ring set, pin, retaining ring, cylinder liner and liner sealing ring.
Part-number sourcing · Cummins QSL8.9 engine reference
Cummins QSL8.9 Piston and Cylinder Liner Kit
Quick answer: This is a six-piece piston and cylinder liner kit for Cummins QSL8.9 engines. The kit references are Piston 5321202; Piston ring set 5320276 + 3928294 + 3921919; Piston pin 3950549; Piston pin retaining ring 3920692; Cylinder liner 5587076; Cylinder liner water blocking ring 5529128. Send the engine model, serial or CPL and old-part markings so the configuration is confirmed before quotation.
- Product type
- Piston and cylinder liner kit
- Engine family
- Cummins QSL8.9
- Kit contents
- Piston, ring set, pin, retaining ring, liner, liner sealing ring
- Application
- Overhaul / rebuild
Confirm the engine model, serial or CPL and the old-part markings before order. Piston and liner variants exist within some engine families.
View Packaging & Export Guide
Kit Part Numbers — Cummins QSL8.9
Part numbers listed for this engine family. Confirm the variant against the engine serial before ordering.
| Part name | Part number | Set requirement |
|---|---|---|
| Piston | 5321202 | 6-cylinder set |
| Piston ring set | 5320276 + 3928294 + 3921919 | 6-cylinder set |
| Piston pin | 3950549 | 6-cylinder set |
| Piston pin retaining ring | 3920692 | 6-cylinder set |
| Cylinder liner | 5587076 | 6-cylinder set |
| Cylinder liner water blocking ring | 5529128 | 6-cylinder set |
These numbers are catalog references for this engine family, supplied as an interchangeable repair kit. They do not imply a genuine Cummins part. Confirm every number against the engine model and old-part markings before substitution.
Compatibility & Identification
Verify before substitution
Match the bore, piston crown, ring groove and kit contents to the engine serial and the old-part markings.
Information needed before order
- Engine model, serial or CPL
- Photos of the old parts and their markings
- Quantity per engine and total order quantity
- Destination country
| Catalog-listed engine context | Buyer guidance |
|---|---|
| Cummins QSL8.9 diesel engines | Confirm with the exact engine serial, CPL and application. |
| Trucks, buses, construction machinery, generator sets and marine applications | Confirm the application and duty before quotation. |
Confirm the bore, piston variant and kit contents before order
This Cummins QSL8.9 kit is offered for overhaul and rebuild work. Bores, piston crowns, ring grooves and kit contents differ between variants, so match the specification together with the application details and engine data.
Verification workflow
- Record the complete engine model, serial or CPL and nameplate information.
- Photograph the old piston, liner and ring set from all sides, including every visible number.
- Record every part number exactly, including composite and superseded forms.
- Compare the offered kit contents with the catalog evidence for this engine family.
- Resolve any bore, piston-variant or contents question before order confirmation.
Quality & Inspection
Available checks, photos, measurements, and documents are confirmed with the quotation.
View inspection requirements
Inspection requirements to request
- Part-number and visible-marking confirmation for every kit component
- Bore, piston height and ring-groove dimension check when target measurements are supplied
- Kit contents and quantity check against the packing list
- Packaging and packing-list review
Include requirements with the enquiry.
Send any target measurements, photo angles, inspection needs, and document requirements for confirmation in the quotation.
Ordering & Export
Packaging
Export-standard packaging with anti-corrosion protection. Packaging method, labeling, grouping, export documents, and receiving requirements are confirmed with the quotation.
Shipping
Provide the destination country and preferred transport mode for quotation.
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Procurement FAQ
What does the Cummins QSL8.9 kit include?
The kit covers one cylinder position: Piston 5321202; Piston ring set 5320276 + 3928294 + 3921919; Piston pin 3950549; Piston pin retaining ring 3920692; Cylinder liner 5587076; Cylinder liner water blocking ring 5529128. Confirm the engine serial and the old-part markings before ordering, because piston and liner variants exist within some engine families.
Are these genuine Cummins parts?
They are offered as interchangeable repair components for Cummins QSL8.9 engines. The numbers listed are catalog references for identification and cross-checking; they do not imply a genuine Cummins part.
How many kits do I need for a full engine?
One kit per cylinder. Confirm the cylinder count and whether any position uses a different piston or liner variant before ordering. This listing is quoted as 6 Cylinders.
How do I verify the kit fits my engine?
Send the engine model, engine serial or CPL and nameplate details, plus photos of the old piston, liner and ring set with their markings. We check every reference against the engine information and confirm the configuration before quotation.
Can I order a single component instead of the full kit?
Yes. Individual pistons, ring sets, liners, pins and retaining rings can be quoted separately. Send the engine details and the specific references you need, for example the piston 5321202.