Confirmed context
Reviewed catalogues associate this relay valve with the Volvo transmission models listed below.
Part-number sourcing · Volvo transmission reference
21740038 Relay Valve for Volvo VT/VTO Gearboxes
Quick answer: OEM 21740038 is a relay valve in the Volvo gearbox shift and pneumatic control system. Confirm the reference against the gearbox model and nameplate before quotation.
- Reference
- 21740038
- Product type
- Relay Valve
- System position
- Shift / pneumatic control
- Platform context
- Volvo VT/VTO and AT/ATO (I-Shift) gearbox catalogues
Catalog association reviewed. 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 |
|---|---|---|---|
| 21740038 | Volvo reference context | Cataloged as relay valve | Send this reference with the gearbox model and nameplate. |
| 20775173 | CEI catalogue mapping | Mapped to the same catalog item | Verify with model, nameplate and old-part markings before substitution. |
| 39331 | FEBI aftermarket code | Listed as a related catalog code | 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.
Compatibility & Identification
Verify before substitution
Match the proposed reference and 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 |
|---|---|
| VT1708B · VT2009B · VT2214B · VT2514B · VT2814B | Confirm with the exact gearbox nameplate. |
| VTO2214B · VTO2514B · VTO2814B | |
| AT/ATO and SPO (I-Shift) where catalogued |
Confirm the assembly position—not only the transmission family
Shift and pneumatic control components are position-specific. Match the complete old-part reference and the assembly position with the gearbox data before substitution.
By reference
Match the full old-part number, including any prefixes, against the catalogue evidence.
By position
Confirm where the component sits in the shift or pneumatic circuit before quoting.
By configuration
Confirm any variant or orientation against the removed part.
Verification workflow
- Record the complete transmission nameplate and exact gearbox model.
- Photograph the old part from several angles and record all markings.
- Record every reference exactly, including spaces and prefixes.
- Compare the offered reference and configuration with the catalog evidence.
- Resolve any substitute or configuration 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 quantity 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
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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Volvo Transmission Parts Hub
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View Volvo transmission partsVolvo Transmission Product Category
Browse existing product records by reference.
Browse the product categoryProcurement FAQ
How do I confirm this part fits my gearbox?
Send the gearbox model, nameplate and the full old-part reference. Shift and pneumatic components are position-specific, so the catalogue description and the removed part should be compared before quotation.
Is this an original Volvo part?
This is an aftermarket reference supplied against the part number. Confirm the offered configuration, markings and packaging during quotation.
Can you supply a complete shift-control set?
Send the list of references you need, one per line with quantities, and each will be checked against the catalogue evidence.
What information is needed for export orders?
Provide the destination country, preferred transport mode and any receiving or document requirements; these are confirmed with the quotation.
Final RFQ
Request a quote for Relay Valve 21740038
Send the matching and order details together so compatibility and quotation requirements can be reviewed efficiently.
