Confirmed context
Reviewed catalogs associate this synchronizer ring with Volvo and Renault AT/ATO I-Shift and SPO Series gearboxes.
Part-number sourcing · Volvo transmission reference
21482856 Synchronizer Ring for Volvo I-Shift & SPO Gearboxes
Quick answer: OEM 21482856 is a synchronizer ring for Volvo and Renault AT/ATO Series (I-Shift) and SPO Series (I-Shift Dual Clutch) gearboxes, cross-referenced with 23574694 and Renault 7421482856 / 7423574694.
- Reference
- 21482856
- Product type
- Synchronizer ring
- Gearbox family
- AT/ATO Series (I-Shift) · SPO Series
- Platform context
- Volvo FM / FH / VM · Renault 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 |
|---|---|---|---|
| 21482856 | Volvo reference context | Cataloged as a synchronizer ring | Send this reference with the gearbox model and nameplate. |
| 23574694 | Volvo catalog mapping (CEI) | Mapped to the same synchronizer ring | Verify with model, nameplate and old-part markings before substitution. |
| 7421482856 | Renault Trucks catalog mapping (CEI) | Renault equivalent of 21482856 | Confirm the full reference and gearbox details before order. |
| 7423574694 | Renault Trucks catalog mapping (CEI) | Renault equivalent of 23574694 | Confirm the full reference and gearbox details before order. |
| CEI 119.307 | CEI catalog code | Synchronizer ring listed against OEM 21482856 | 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 ring position 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) — C / D / E / F generations | Confirm with the exact gearbox nameplate. |
| SPO Series (I-Shift Dual Clutch) — SPO2812 |
Vehicle applications
Listed for Volvo FM, FH and VM trucks with the corresponding transmissions, and for Renault trucks fitted with the same gearboxes. Confirm the exact gearbox model against the vehicle nameplate.
Confirm the ring position before order
Reference 21482856 is cataloged as a synchronizer ring. Inner, intermediate and outer ring positions are distinct, so match the position together with the complete old-part reference and gearbox data.
Verification workflow
- Record the complete gearbox nameplate and exact model.
- Photograph the old ring from front, side, and all marked areas.
- Record every reference exactly, including spaces and prefixes.
- Compare the offered reference and position 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
- Visible-condition and teeth 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 21482856 synchronizer ring fit?
Reviewed catalogs list the 21482856 synchronizer ring against Volvo / Renault AT/ATO Series (I-Shift) and SPO Series (I-Shift Dual Clutch) gearboxes, covering C, D, E and F generations and SPO2812, and for Volvo FM, FH and VM trucks. Confirm with the gearbox model and nameplate before order.
Is there a Renault equivalent reference?
Yes. Renault catalogs list 7421482856 for 21482856 and 7423574694 for 23574694. Also check Volvo 23574694 if your old part carries it.
How do I verify the 21482856 synchronizer ring fits my gearbox?
Send your gearbox model, nameplate and photos of the old ring 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.
