Confirmed context
Reviewed catalogs associate this synchronizer ring with Volvo and Renault AT/ATO I-Shift and VT/VTO gearboxes.
Part-number sourcing · Volvo transmission reference
1521438 Synchronizer Ring for Volvo I-Shift & VT/VTO Gearboxes
Quick answer: OEM 1521438 is a synchronizer ring for Volvo and Renault AT/ATO Series (I-Shift) and VT/VTO Series gearboxes, cross-referenced with 8171737 / 24003051 and Renault 7408171737 / 7424003051.
- Reference
- 1521438
- Product type
- Synchronizer ring
- Gearbox family
- AT/ATO Series (I-Shift) · VT/VTO Series
- Platform context
- Volvo FM / FH / VM · Renault heavy 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 |
|---|---|---|---|
| 1521438 | Volvo reference context | Cataloged as a synchronizer ring | Send this reference with the gearbox model and nameplate. |
| 8171737 · 24003051 | Volvo catalog mapping (CEI) | Mapped to the same synchronizer ring | Verify with model, nameplate and old-part markings before substitution. |
| 7408171737 · 7424003051 | Renault Trucks catalog mapping (CEI) | Renault equivalents of the mapped references | Confirm the full reference and gearbox details before order. |
| CEI 119.186 | CEI catalog code | Synchronizer ring listed against OEM 1521438 | 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. |
| VT2412B · VT2014B · VT2214B · VT2514B · VT2814B · VTO series |
Vehicle applications
Listed for Volvo FM7, FM9, FM12, FH12 and FH16 trucks, and B12 applications, with the corresponding transmissions. Confirm the exact gearbox model against the vehicle nameplate.
Confirm the ring position before order
Reference 1521438 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 1521438 synchronizer ring fit?
Reviewed catalogs list the 1521438 synchronizer ring against Volvo / Renault AT/ATO Series (I-Shift) and VT/VTO Series gearboxes, covering C, D, E and F generations plus VT2412B and the VT2014B–VT2814B range, and for Volvo FM7, FM9, FM12, FH12 and FH16 trucks. Confirm with the gearbox model and nameplate before order.
Is there a Renault or alternate Volvo reference?
Yes. Renault catalogs list 7408171737 and 7424003051, and Volvo catalogs also map 8171737 and 24003051 to the same ring.
How do I verify the 1521438 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.
