Confirmed context
Reviewed catalogs associate this gear crown with selected Volvo and Renault AT/ATO I-Shift and SPO Series gearboxes.
Part-number sourcing · Volvo transmission reference
21110728 Gearbox Reduction Gear Crown for Volvo I-Shift Gearboxes
Quick answer: OEM 21110728 is a gearbox reduction gear crown (ring gear) for Volvo and Renault AT/ATO Series (I-Shift) and SPO Series (I-Shift Dual Clutch) gearboxes, cross-referenced with 20726338 and Renault 7421110728.
- Reference
- 21110728
- Product type
- Gearbox reduction gear crown (ring gear)
- Gearbox family
- AT/ATO Series (I-Shift) · SPO Series
- Platform context
- Volvo FH / FM · Renault I-Shift trucks
Catalog association confirmed. Send the gearbox model, nameplate and old-part markings for final compatibility verification before quotation.
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OEM & Reference Number Matching
Scroll horizontally to read catalog relationships and buyer guidance →
| Reference | Catalog / Brand Source | Relationship | Buyer Guidance |
|---|---|---|---|
| 21110728 | Volvo reference context | Cataloged as a gearbox reduction gear crown for Volvo / Renault I-Shift gearboxes | Send this reference with the gearbox model and nameplate. |
| 20726338 | Volvo catalog mapping (TirShop / volvokits) | Mapped to the same crown sprocket | Verify with model, nameplate and old-part markings before substitution. |
| 7421110728 | Renault Trucks catalog mapping | Renault equivalent of 21110728 | Confirm the full reference and gearbox details before order. |
| CEI listing | CEI catalog code | Gearbox reduction gear crown listed against OEM 21110728 | Verify before substitution; send both references for checking. |
Shared catalog references should be verified against the gearbox model, nameplate and existing part markings before substitution. Cross-reference association only; it does not imply a genuine Volvo part.
Compatibility & Identification
Verify before substitution
Match the proposed reference and gear configuration to the supplied gearbox details.
Information needed before order
- Gearbox model and nameplate
- Old-part markings and photos
- Quantity and destination
| Catalog-listed transmission context | Buyer guidance |
|---|---|
| AT/ATO Series (I-Shift) | Confirm with the exact gearbox nameplate. |
| SPO Series (I-Shift Dual Clutch) |
Vehicle applications
Listed for Volvo FH and FM trucks equipped with the corresponding I-Shift gearboxes, and for Renault trucks fitted with the same transmissions. Confirm the exact gearbox model against the vehicle nameplate.
Confirm the gearbox family before order
Reference 21110728 is cataloged as a reduction gear crown for AT/ATO Series (I-Shift) and SPO Series gearboxes. Confirm the gearbox family and complete old-part reference before ordering.
Verification workflow
- Record the complete gearbox nameplate and exact model.
- Photograph the old gear crown from front, side, and all marked areas.
- Record every reference exactly, including spaces and prefixes.
- Compare the offered reference and configuration with the catalog evidence.
- Resolve any substitute, configuration, or measurement 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
- Teeth and visible-condition check
- Selected dimensional checks when target measurements are supplied
- 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
Which Volvo gearboxes does the 21110728 reduction gear crown fit?
Reviewed catalogs list the 21110728 gear crown against Volvo / Renault AT/ATO Series (I-Shift) and SPO Series (I-Shift Dual Clutch) gearboxes. Confirm with the gearbox model and nameplate before order.
Is there a Renault equivalent reference?
Yes. Renault catalogs list 7421110728 as the equivalent reference. Also send Volvo 20726338 if your old part carries it.
How do I verify the 21110728 gear crown fits my gearbox?
Send your gearbox model, nameplate and photos of the old gear crown and its markings. We will cross-reference the OEM number and confirm before order.
How should I organize a multi-part enquiry?
Send the gearbox model, nameplate photo, the old-part markings and the full list of parts you need in one message. We will check each against the catalog and reply with one consolidated quote.
