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Description
1621 1973-1987 Buick Cadillac Chevy GM Olds Pontiac Grand National 196 231 350 4.5" water pumpFlowkooler high flow pump 1621 has a 16 vane CNC machined billet impeller. It is shrouded and ported and, with the increased vane count and a reduced impeller clearance, it really pumps the coolant. It achieves greater flow rates, higher head pressure and a more efficient flow. The impeller's color is due to Type II Class II military grade surface coating which protects against corrosive fluids. FlowKooler introduced the first hi flow pumps and
Flowkooler high flow pump 1621 has a 16 vane CNC machined billet impeller. It is shrouded and ported and, with the increased vane count and a reduced impeller clearance, it really pumps the coolant. It achieves greater flow rates, higher head pressure and a more efficient flow. The impeller's color is due to Type II Class II military grade surface coating which protects against corrosive fluids.
FlowKooler introduced the first hi flow pumps and continues to improve impeller design. Why is increased flow so important to cooling a hot engine? Because it has been proven time and time again that reducing the cycle time between the heat source and the heat sink creates more opportunities to shed heat and drop engine temperatures.
From 0-3,300 RPM…Nothing Beats a FlowKooler!
| General Specifications: | ||
|---|---|---|
| Type of Material of Pump Body | Aluminum | |
| Number of Blades on Impeller | 16 | |
| Direction of Rotation | CW | |
| Fan Hub Height | 4 1/2" | |
| Shaft Diameter | 5/8" | |
| Hose Connections: | 1st | 2nd |
| Gender | M | NA |
| Diameter | 3/4" | NA |
| Threaded | Yes | NA |
| Other Special Features: | ||
|
||
| Parts Contained in Box: | ||
| Mounting Gasket, Installation Sheet, FlowKooler Decal | ||
| Make | Model | Year | Block | CID | Liters |
|---|---|---|---|---|---|
| buick | apollo | 75-73 | V8 | 350 | 5.7L |
| buick | centurion | 1973 | V8 | 350 | 5.7L |
| buick | century | 77-73 | V8 | 350 | 5.7L |
| buick | century | 79-78 | V6 | 196 | 3.2L |
| buick | century | 81-75 | V6 | 231 | 3.8L |
| buick | electra | 81-77 | V8 | 350 | 5.7L |
| buick | electra | 84-80 | V6 | 252 | 4.1L |
| buick | estate wagon | 1973 | V8 | 350 | 5.7L |
| buick | estate wagon | 80-78 | V8 | 350 | 5.7L |
| buick | lesabre | 80-73 | V8 | 350 | 5.7L |
| buick | lesabre | 84-80 | V6 | 252 | 4.1L |
| buick | lesabre | 85-76 | V6 | 231 | 3.8L |
| buick | regal | 77-73 | V8 | 350 | 5.7L |
| buick | regal | 79-78 | V6 | 196 | 3.2L |
| buick | regal | 84-82 | V6 | 252 | 4.1L |
| buick | regal | 87-75 | V6 | 231 | 3.8L |
| buick | grand national | 87-84 | V6 | 231 | 3.8L |
| buick | riviera | 78-77 | V8 | 350 | 5.7L |
| buick | riviera | 84-81 | V6 | 252 | 4.1L |
| buick | riviera | 85-79 | V6 | 231 | 3.8L |
| buick | skyhawk | 1978 | V6 | 231 | 3.8L |
| buick | skyhawk | 77-75 | All | All | |
| buick | skyhawk | 80-79 | All | All | |
| buick | skylark | 76-75 | V8 | 350 | 5.7L |
| buick | skylark | 79-75 | V6 | 231 | 3.8L |
| cadillac | deville | 82-80 | V6 | 252 | 4.1L |
| cadillac | eldorado | 82-81 | V6 | 252 | 4.1L |
| cadillac | fleetwood | 82-80 | V6 | 252 | 4.1L |
| cadillac | seville | 82-81 | V6 | 252 | 4.1L |
| chevrolet | camaro | 81-80 | V6 | 231 | 3.8L |
| chevrolet | caprice | 85-80 | V6 | 231 | 3.8L |
| chevrolet | el camino | 85-78 | V6 | 231 | 3.8L |
| chevrolet | impala | 85-80 | V6 | 231 | 3.8L |
| chevrolet | malibu | 83-78 | V6 | 231 | 3.8L |
| chevrolet | monte carlo | 87-78 | V6 | 231 | 3.8L |
| chevrolet | monza | 79-78 | V6 | 196 | 3.2L |
| chevrolet | monza | 80-78 | V6 | 231 | 3.8L |
| gmc | caballero | 84-78 | V6 | 231 | 3.8L |
| oldsmobile | 98 | 83-81 | V6 | 252 | 4.1L |
| oldsmobile | cutlass | 81-77 | V6 | 231 | 3.8L |
| oldsmobile | cutlass | 87-85 | V6 | 231 | 3.8L |
| oldsmobile | cutlass calais | 84-78 | V6 | 231 | 3.8L |
| oldsmobile | cutlass cruiser | 83-78 | V6 | 231 | 3.8L |
| oldsmobile | cutlass salon | 81-78 | V6 | 231 | 3.8L |
| oldsmobile | cutlass salon | 87-85 | V6 | 231 | 3.8L |
| oldsmobile | cutlass supreme | 87-77 | V6 | 231 | 3.8L |
| oldsmobile | delta 88 | 85-77 | V6 | 231 | 3.8L |
| oldsmobile | omega | 76-75 | V8 | 350 | 5.7L |
| oldsmobile | omega | 79-77 | V6 | 231 | 3.8L |
| oldsmobile | starfire | 1975 | All | All | |
| oldsmobile | starfire | 77-76 | L4 | 140 | 2.3L |
| oldsmobile | starfire | 80-75 | V6 | 231 | 3.8L |
| oldsmobile | toronado | 84-81 | V6 | 252 | 4.1L |
| pontiac | bonneville | 1982 | V6 | 252 | 4.1L |
| pontiac | bonneville | 80-78 | V8 | 350 | 5.7L |
| pontiac | bonneville | 86-80 | V6 | 231 | 3.8L |
| pontiac | catalina | 1981 | V6 | 231 | 3.8L |
| pontiac | firebird | 1989 | V6 | 231 | 3.8L |
| pontiac | firebird | 81-77 | V6 | 231 | 3.8L |
| pontiac | grand am | 1979 | V6 | 231 | 3.8L |
| pontiac | grand lemans | 81-77 | V6 | 231 | 3.8L |
| pontiac | grand prix | 1982 | V6 | 252 | 4.1L |
| pontiac | grand prix | 87-78 | V6 | 231 | 3.8L |
| pontiac | lemans | 81-77 | V6 | 231 | 3.8L |
| pontiac | parisienne | 85-83 | V6 | 231 | 3.8L |
| pontiac | phoenix | 79-77 | V6 | 231 | 3.8L |
| pontiac | sunbird | 80-76 | V6 | 231 | 3.8L |
| pontiac | ventura | 1977 | V6 | 231 | 3.8L |
| pontiac | ventura | 76-75 | V8 | 350 | 5.7L |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Good Value
Color: Black
Good quality SS cup. Not much else to say.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2026
★★★★★ 5
Absolutely fantastic
Color: Black, Color: Black
Absolutely solid product and would recommend this to anybody as a wide mouth espresso measuring cup.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026
★★★★★ 5
Nice cup!
Color: Silver
Nice measuring cup. I appreciate the pretty wooden handle. Using this espresso measuring cup has upped my latte game considerably!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 28, 2025
★★★★★ 4
Decent 3oz measurer
Color: Black, Color: Black
I like it, it works. However it is a bit heavy on the handle side. You think somebody like maestri house would get it correct. Could have used heavier metal on the measuring cup. Anyways I keep it it's nice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
★★★★★ 5
Expresso
Color: Silver
I like it. Each coffee perfectly measured
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 25, 2026
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