
Century Threaded Shaft 2 HP 2 Speed 230V Full Rate Motor B2979
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Quick overview
- Two speed 3450 rpm on high and 1725 rpm on low, switched at the motor with a low speed microswitch.
- 2 HP full rate 2.0 HP output on high, service factor 1.2, 230V single phase.
- Fits common two speed pumps Hayward Super Pump, Super II SP3000 series, Northstar and Max Flow, Jacuzzi Magnum, and Jandy HHP and HHPU.
- 56J round flange, threaded shaft 7/16 in. threaded 303 stainless steel shaft.
- Sealed ball bearings on both the drive and opposite drive ends, drip proof enclosure, thermally protected.
- Not for California this motor is not California Title 20 compliant and is not for sale in California.
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Frequently bought together

Century Threaded Shaft 2 HP 2 Speed 230V Full Rate Motor B2979

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Century 1.65 HP Square Flange Pool and Spa Pump Motor, 3450 RPM 48Y, Threaded Shaft, HSQ165
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Product details
The Century B2979 is a two speed, 2 HP full rate replacement motor with a 56J round flange and a threaded shaft. It runs on 230V single phase and drops in on the two speed versions of the Hayward Super Pump, Super II SP3000 series, Northstar and Max Flow, the Jacuzzi Magnum, and Jandy HHP and HHPU pumps. It crosses to Hayward motor SP-1620-Z2-MC.
Two speeds
High speed is 3450 rpm and low speed is 1725 rpm. High speed is switchless, and low speed is selected through a microswitch on the motor. Nameplate current is 10.0 A on high and 2.1 A on low at a 1.2 service factor.
Construction
Sealed ball bearings at both ends, a rolled steel frame, drip proof enclosure, class F insulation and thermal protection. The shaft is 7/16 in. threaded 303 stainless steel, 0.625 in. in diameter with a 2.604 in. extension. Overall length is 13.55 in. and the frame is 8.25 in. long. The motor is UL recognized and CSA listed.
California buyers
This motor is not California Title 20 compliant and cannot be sold into California. Century offers V-Green EVO variable speed motors, models EVC130, EVC165, EVC225, EVQ130, EVQ165 and EVQ225, that meet the CEC standard.
| Brand | Century |
|---|---|
| Manufacturer part number | B2979 |
| UPC | 786674060198 |
| Substitute part number | SP-1620-Z2-MC |
| Horsepower | 2.0 HP high speed |
| Speeds | 2 |
| Speed | 3450/1725 rpm |
| Voltage | 230 V |
| Phase | 1 |
| Frequency | 60 Hz |
| Current | SF 10.0/2.1 A |
| Service factor | 1.2 |
| Frame | Y56J |
| Mounting | Round flange |
| Shaft | 7/16 in. threaded, 303 stainless steel, 0.625 in. diameter, 2.604 in. extension |
| Overall length | 13.55 in. |
| Frame length | 8.25 in. |
| Shipping weight | 35 lb |
| Ships | Parcel |
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