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R404a
24V
VALEO TM21
150mm
B1
60 days
20
12 Months
This TM21-type heavy-duty refrigeration compressor is configured with a 24V electromagnetic clutch, a B1 single-groove belt pulley, and a 150 mm pulley diameter. It is an aftermarket replacement option for selected R404A transport refrigeration and mobile cooling systems.
It is supplied for professional repair channels, compressor distributors, importers and fleet-maintenance purchasing programs. A correct selection requires comparison of the original label, clutch voltage, belt drive, pulley measurement, mounting ears and port layout.
This version gives buyers a defined TM21-family configuration rather than a generic compressor-body match. Its 24V clutch, B1 belt drive and 150 mm should be checked as one set against the removed unit.
TM21-family identification must be confirmed separately from TM16, even where external layouts appear similar. The product should not be chosen from a photograph alone because similar housings can be supplied with different clutch coils, pulley profiles and pulley offsets.
Elecdura can review original label images, pulley measurements and photographs of the mounting and ports before a wholesale quotation is prepared.
Matching principle: model family, voltage, belt drive and pulley diameter must all agree before mounting and port details are reviewed.
| Specification | Product Details |
Compressor Type | TM21 Type |
Clutch Voltage | 24V |
Pulley Type | B1 |
Number of Pulley Grooves | 1 |
Pulley Diameter | 150 mm |
Refrigerant Reference | R404A System Configuration |
Application Category | Transport Refrigeration and Mobile Cooling Systems |
Supply Type | Aftermarket Replacement / Wholesale B2B Supply |
The stated 24V rating applies to the electromagnetic clutch coil. A 24V clutch must be used with the matching 24V electrical control circuit, common in many heavy-duty installations.
A visually similar 12V clutch compressor is not an electrical substitute. Incorrect voltage can cause non-engagement, unreliable operation or coil damage.
This product uses a B1 single-groove belt pulley. The B1 arrangement uses one belt groove. It should be matched to the original single-groove drive and belt alignment; adding a second groove or substituting a multi-rib pulley changes the drive interface.
Compare the original belt type with the pulley face and confirm that the belt runs in the same plane as the installation bracket.
Measure the outer edge of the original pulley and compare it with the 150 mm specification. Include pulley offset and belt alignment in the inspection, not diameter alone.
A matching pulley profile with a different diameter can change belt speed and positioning. The original assembly remains the selection reference.
Compatibility cannot be confirmed by the TM21 family name alone. Review the complete electrical, belt-drive and physical configuration before ordering.
Confirm that the original compressor is a TM21-family unit, not a TM16 or another look-alike family.
Verify the original electromagnetic clutch is rated 24V.
Confirm the B1 pulley profile and 1-groove arrangement.
Measure the pulley outer diameter and confirm 150 mm.
Check pulley offset, belt alignment and bracket clearance.
Compare mounting ears, bolt positions and overall mounting geometry.
Compare suction and discharge port positions, head shape and port orientation.
Confirm the original system refrigerant, lubricant specification and oil quantity requirements.
Recommended matching information: send the original compressor label plus front, rear, side and pulley-view photographs before a bulk order.
When a label is damaged or incomplete, photographs with a visible pulley measurement and mounting details provide useful comparison evidence. Final fitment remains subject to the complete compressor and refrigeration-unit configuration.
This TM21-type 24V compressor is intended for selected belt-driven mobile refrigeration systems requiring the B1 drive and 150 mm pulley configuration.
Refrigerated trucks and vans
Cold-chain delivery vehicles
Mobile refrigeration units
Fleet maintenance and repair projects
Aftermarket compressor distribution programs
These are application categories, not guaranteed vehicle or unit fitment. The original label, voltage, drive, mounting and port arrangement must be verified before installation.
For mixed-configuration orders, separating models by clutch voltage and pulley drive prevents avoidable receiving errors. Order details can be reviewed against the agreed product specification before shipment.
TM21 family confirmation
24V clutch specification confirmation
B1 pulley profile and 1-groove inspection
150 mm pulley-diameter check
Visible mounting and port-layout review
Port protection, product appearance and packaging review
Inspection scope, photographs and documentation can be agreed according to order quantity and buyer requirements.
Elecdura supplies TM21-type refrigeration compressors to parts wholesalers, importers, distributors, fleet-service businesses and professional repair channels.
Specification matching from labels, photographs and measurements
Sample-order review before volume purchasing
Mixed-model quotation for compatible compressor requirements
Neutral packaging and labeling discussion
Pre-shipment photograph and packing-information review
MOQ, samples, packaging options and lead time are confirmed against the final model list, quantity and supply conditions.
No. The clutch coil voltage must match the system electrical circuit. A voltage mismatch can prevent correct clutch operation and may damage electrical components.
Do not assume interchangeability. This compressor requires a B1 1-groove drive; belt profile, groove count, pulley offset and alignment must match the removed unit.
Measure across the outer edges of the original pulley at its widest point, then compare the reading with 150 mm. A photograph showing the measuring tool is useful for a matching review.
No. Refrigerant reference is only one selection point. Compressor family, clutch voltage, belt drive, pulley size, mounting, ports and lubricant requirements must also be compatible.
Please provide the original label, front and rear photographs, a pulley photo with voltage and diameter details, mounting and port images, quantity and destination country.
