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Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
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Description
1673 1965-1973 Chevy GMC 396 400 427 454 502 Short 5-3/4" water pumpIs your big block running hot? Flowkooler designed a high flow water pump with a CNC machined billet impeller with 16 vanes, integrated shrouding and a reduced casting to impeller vane clearance. It achieves greater flow rates, higher head pressure and a more efficient flow. The impeller 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
Is your big block running hot? Flowkooler designed a high flow water pump with a CNC machined billet impeller with 16 vanes, integrated shrouding and a reduced casting-to-impeller vane clearance. It achieves greater flow rates, higher head pressure and a more efficient flow. The impeller 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 BBC 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 | Cast Iron | |
| Number of Blades on Impeller | 16 CNC Aluminum | |
| Direction of Rotation | CW or CCW | |
| Pilot shaft | 5/8" | |
| Fan Hub Working Height | 5 3/4" | |
| Hose Connections: | 1st | 2nd |
| Gender | F | F |
| Diameter | 3/4" | 3/4" |
| Threaded | Yes | Yes |
| Other Special Features: | ||
|
||
| Parts Contained in Box: | ||
| Mounting Gaskets, 3/4" x 1 1/2" Threaded Heater Hose Extension , Installation Sheet, FlowKooler Decal | ||
| Make | Model | Year | Block | CID | Liters |
|---|---|---|---|---|---|
| chevrolet | bel air | 1965 | V8 | 396 | 6.5L |
| chevrolet | bel air | 1968 | V8 | 427 | 7.0L |
| chevrolet | biscayne | 1968 | V8 | 427 | 7.0L |
| chevrolet | biscayne | 67-65 | V8 | 396 | 6.5L |
| chevrolet | c10/c1500 pickup | 69-68 | V8 | 396 | 6.5L |
| chevrolet | c10/c1500 pickup | 72-71 | V8 | 402 | 6.6L |
| chevrolet | c1500 suburban | 69-68 | V8 | 396 | 6.5L |
| chevrolet | c1500 suburban | 72-71 | V8 | 402 | 6.6L |
| chevrolet | c20/c2500 pickup | 69-68 | V8 | 396 | 6.5L |
| chevrolet | c20/c2500 pickup | 72-70 | V8 | 402 | 6.6L |
| chevrolet | c2500 suburban | 69-68 | V8 | 395 | 6.5L |
| chevrolet | c2500 suburban | 72-70 | V8 | 402 | 6.6L |
| chevrolet | c30 pickup | 69-68 | V8 | 396 | 6.5L |
| chevrolet | c30 pickup | 72-70 | V8 | 402 | 6.6L |
| chevrolet | camaro* | 68-65 | V8 | 396 | 6.5L |
| chevrolet | caprice* | 68-66 | V8 | 396 | 6.5L |
| chevrolet | caprice* | 68-66 | V8 | 427 | 7.0L |
| chevrolet | chevelle* | 68-65 | V8 | 396 | 6.5L |
| chevrolet | chevy ii* | 1968 | V8 | 396 | 6.5L |
| chevrolet | corvette | 1965 | V8 | 396 | 6.5L |
| chevrolet | corvette* | 1970 | V8 | 454 | 7.4L |
| chevrolet | corvette* | 69-66 | V8 | 427 | 7.0L |
| chevrolet | el camino* | 68-66 | V8 | 396 | 6.5L |
| chevrolet | impala* | 68-65 | V8 | 396 | 6.5L |
| chevrolet | impala* | 68-66 | V8 | 427 | 7.0L |
| chevrolet | k10/1500 pickup | 69-68 | V8 | 396 | 6.5L |
| chevrolet | k10/k1500 suburban | 1972 | V8 | 400 | 6.6L |
| chevrolet | k10/k1500 suburban | 69-68 | V8 | 396 | 6.5L |
| chevrolet | k20/k2500 pickup | 69-68 | V8 | 396 | 6.5L |
| chevrolet | k20/k2500 suburban | 1969 | V8 | 396 | 6.5L |
| chevrolet | k30/k3500 pickup | 1969 | V8 | 396 | 6.5L |
| chevrolet | malibu | 67-66 | V8 | 396 | 6.5L |
| chevrolet | p30 van | 1972 | V8 | 400 | 6.6L |
| gmc | c15/c1500 pickup | 69-68 | V8 | 396 | 6.5L |
| gmc | c15/c1500 pickup | 72-70 | V8 | 402 | 6.6L |
| gmc | c15/c1500 suburban | 69-68 | V8 | 396 | 6.5L |
| gmc | c15/c1500 suburban | 72-70 | V8 | 402 | 6.6L |
| gmc | c25/c2500 pickup | 69-68 | V8 | 396 | 6.5L |
| gmc | c25/c2500 pickup | 72-70 | V8 | 402 | 6.6L |
| gmc | c25/c2500 suburban | 69-68 | V8 | 396 | 6.5L |
| gmc | c35/c3500 pickup | 69-68 | V8 | 396 | 6.5L |
| gmc | c35/c3500 pickup | 72-70 | V8 | 402 | 6.6L |
| gmc | k15/k1500 suburban | 72-68 | V8 | 400 | 6.6L |
| gmc | k25/k2500 pickup | 69-68 | V8 | 396 | 6.5L |
| gmc | k25/k2500 suburban | 69-68 | V8 | 396 | 6.5L |
| gmc | k35/k3500 pickup | 71-68 | V8 | 396 | 6.5L |
| gmc | p35/p3500 van | 1972 | V8 | 400 | 6.6L |
| pontiac | acadian | 71-70 | V8 | 454 | 7.4L |
- Corvette/Chevelle/GM OEM 3906656 Deep Double Groove Pulley may require a shim to prevent rubbing
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
4.3 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
Authentic flavor
Size: 20 Ounces
Exactly as the website says. Very strong and very easily to enjoy every single moment.
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Reviewed in the United States on January 29, 2026
★★★★★ 4
The quality looks quite good considering where it was manufactured.
Size: 11.8 Ounces
Looks great, haven’t used the machine yet. However, it arrived timely and it looks to be
Very nice piece of equipment. I look forward the first cup.
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Reviewed in the United States on October 21, 2025
★★★★★ 5
Great product, thoughtful design, great customer service
Color: Black, Size: 40 oz
I don't write a lot of reviews, but I felt like this product deserved one. This is an excellent cold brew maker. It is very easy to use and has a great 1,200 mL capacity. The plastic construction is more versatile (less fragile) than other brewers made from glass. The filtration system eliminates the sludge that other brew systems leave. The packaging is very thoughtful - a scoop and sponge are included. The scoop is easily overlooked, but it is the perfect size to clean the used grounds out of the filter. The sponge is an unexpectedly useful form factor to help with cleaning. Hopefully the sponges can be ordered separately, since sponges don't last forever.
Some minor downsides:
Cleaning is moderately easy, but the only component that is recommended for the dishwasher is the pitcher (which is also easiest to clean by hand). All of the other elements are recommended for hand washing, which doesn't take long.
The way the filter is configured, the pitcher will work most effectively if stored (at least for part of the brew cycle) on its side. However, there is a vent in the lid that is prone to leaking when the pitcher is stored on its side. Brewing upright can lead to the top grounds not getting exposed to water.
Unfortunately, one of the pieces broke during routine use after a couple of months: the pitcher lid is attached with a couple of hinges that snap the lid into place on the pitcher. One of the hinge attachments broke. I contacted customer service and a replacement pitcher arrived four days later. I'd recommend being careful with these hinge attachments as they seem prone to break. At the same time, the customer service is very responsive and suggests that they take support of their products seriously.
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Reviewed in the United States on May 1, 2025
★★★★★ 5
Nice little cold brew pitcher
Color: Black, Size: 40 oz
Easy to use and very easy to clean. We have made one batch of cold brew so far and are very pleased with the results, the suggested measurements produced a very smooth tasting coffee. Definitely worth trying for the price.
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Best cold brew ever
Color: Black, Size: 40 oz
How did I live without this?? My ice coffee made in this is the best I have ever had. It is very easy to use and also very easy to clean. I was very impressed with the quality of the pitcher. It is very thick acrylic and cleans up great with absolutely no staining or discoloration. I am going to be ordering another for my brother! I highly recommend this one!
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Reviewed in the United States on April 19, 2026