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Description
1781 1973-1991 Jeep AMC 304 360 401 water pumpFlowkooler high flow pump 1781 has a CNC machined billet impeller designed with an increased vane count and a reduced impeller clearance to achieve greater flow rates, higher block pressure. A Type II Class II military grade anodize surface coating protects against corrosive fluids. We developed this hi flow pump because Jeeps tend to overheating in traffic and on the trail. Tight engine space and limited airflow plague the cooling system but it has
Flowkooler high flow pump 1781 has a CNC machined billet impeller designed with an increased vane count and a reduced impeller clearance to achieve greater flow rates, higher block pressure. A Type II Class II military grade anodize surface coating protects against corrosive fluids.
We developed this hi flow pump because Jeeps tend to overheating in traffic and on the trail. Tight engine space and limited airflow plague the cooling system but it has been proven time and time again that reducing the cycle time between the heat source and the heat sink drops engine temperatures for slow speed rock crawling and stop and go traffic.
From 0-3,300 RPM…Nothing Beats a FlowKooler!
| General Specifications: | ||
|---|---|---|
| Type of Material of Pump Body | Aluminum | |
| Number of Blades on Impeller | 8 CNC Aluminum | |
| Direction of Rotation | CW | |
| Fan Hub Working Height | 4-13/16" | |
| Shaft Diameter | 5/8" | |
| Inlet Outside Diameter | 1 7/8" | |
| Fan hub thread | 5/16-24" | |
| Hose Connections: | 1st | 2nd |
| Gender | M | M |
| Diameter | 7/8" | 7/8" |
| Threaded | NA | NA |
| Other Special Features: | ||
|
||
| Parts Contained in Box: | ||
| Mounting Gaskets, Installation Sheet, FlowKooler Decal | ||
| Make | Model | Year | Block | CID | Liters |
|---|---|---|---|---|---|
| AMC | AMBASSADOR | 74-73 | V8 | 304 | 5.0L |
| AMC | AMX | 74-73 | V8 | 304 | 5.0L |
| AMC | AMX | 79-78 | V8 | 304 | 5.0L |
| AMC | CONCORD | 79-78 | V8 | 304 | 5.0L |
| AMC | GREMLIN | 76-73 | V8 | 304 | 5.0L |
| AMC | HORNET | 77-73 | V8 | 304 | 5.0L |
| AMC | JAVELIN | 74-73 | V8 | 304 | 5.0L |
| AMC | MATADOR | 77-73 | V8 | 304 | 5.0L |
| AMC | PACER | 79-78 | V8 | 304 | 5.0L |
| AMC | SPIRIT | 1979 | V8 | 304 | 5.0L |
| AMC | AMBASSADOR | 74-73 | V8 | 360 | 5.9L |
| AMC | AMX | 74-73 | V8 | 360 | 5.9L |
| AMC | HORNET | 77-73 | V8 | 360 | 5.9L |
| AMC | JAVELIN | 74-73 | V8 | 360 | 5.9L |
| AMC | MATADOR | 78-73 | V8 | 360 | 5.9L |
| AMC | AMBASSADOR | 74-73 | V8 | 401 | 6.6L |
| AMC | AMX | 74-73 | V8 | 401 | 6.6L |
| AMC | JAVELIN | 74-73 | V8 | 401 | 6.6L |
| AMC | MATADOR | 76-73 | V8 | 401 | 6.6L |
| JEEP | CJ SERIES | 81-73 | V8 | 304 | 5.0L |
| JEEP | COMMANDO | 1973 | V8 | 304 | 5.0L |
| JEEP | DJ SERIES | 1974 | V8 | 304 | 5.0L |
| JEEP | JEEPSTER | 1973 | V8 | 304 | 5.0L |
| JEEP | CHEROKEE | 83-74 | V8 | 360 | 5.9L |
| JEEP | GRAND WAGONEER | 91-84 | V8 | 360 | 5.9L |
| JEEP | J SERIES PICKUP | 88-73 | V8 | 360 | 5.9L |
| JEEP | WAGONEER | 83-73 | V8 | 360 | 5.9L |
| JEEP | CHEROKEE | 78-74 | V8 | 401 | 6.6L |
| JEEP | J SERIES PICKUP | 78-74 | V8 | 401 | 6.6L |
| JEEP | WAGONEER | 78-74 | V8 | 401 | 6.6L |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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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]
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4.7 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 1
To flat dosent stay cool wish I would of ordered a more expensive one that stays cool and fluffier
Color: Black and White
Not as described wish I would of ordered a more expensive one that stays cooler and fluffer
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 6, 2026
★★★★★ 5
Perfect pillow
Color: Black and White
I love this pillow! At first I was afraid it was too thick but it's perfect. I have a lot of neck issues and this pillow has stopped all the pain that I used to feel when waking up! The price is good and it works great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 13, 2025
★★★★★ 5
Comfortable
Color: Black and White
I have slept so good after I got this pillow I wake up with no more neck pain and get a full nights rest and and love how my pillow stays nice and cool all the time
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 27, 2025
★★★★★ 5
Finally a Cooling Blanket That Actually Works for Hot Sleepers
Size: Queen (90" * 90"）, Color: Luxury Grey, Size: Queen (90" * 90"）, Color: Luxury Grey
I first got to know this brand when they released their cooling pillow. At the time, I was very skeptical because I’ve tried many “cooling” pillows and pillowcases from other brands, and almost all of them failed to stay cool throughout the night. Surprisingly, this brand was the first one that actually worked for me.
Going through menopause has been extremely difficult, especially dealing with the constant heat and night sweats. I kept thinking that if they could somehow use the same cooling technology in a blanket, it would be amazing — and they actually did it.
This blanket has honestly been a lifesaver for me. One side has the cooling fabric while the other side feels more like a regular blanket, so you can switch depending on the temperature or season. I’ve been using a silk comforter before this, and while it was comfortable, it really didn’t help much with overheating at night. This cooling blanket made a noticeable difference almost immediately.
What impressed me most is that the cooling effect doesn’t just disappear after a few minutes. It stays comfortably cool and lightweight through the night without feeling damp or overly thin. Since using it, I’ve actually been tracking improvements in my sleep using my WHOOP device, and over the past 20 days I’ve noticed my deep sleep readings improving consistently.
The blanket also feels well made, soft, and lightweight without feeling cheap. For the quality and performance, I think the price is very fair, especially compared to other “cooling” bedding products that overpromise and underdeliver.
If you struggle with hot sleeping, night sweats, or menopause-related heat issues, I would absolutely recommend giving this a try. It genuinely improved my sleep quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
★★★★★ 5
Great blanket for keeping cool, but doesn't magically defy physics.
Size: King（103“*90”）, Color: Luxury Grey
This blanket is pretty awesome, and functions exactly as stated; however you might get the wrong impression from the image of the blanket in a the snowy mountains glowing blue as if its actively cooling. The blanket has two sides, the "cold" and "normal" side -- the cold side is the one that has the Q-max 0.45 effect, it actually feels cool to the touch. That being said, covering yourself with this blanket feels pretty similar to using a down blanket with a silk (or some cooler) fabric. It feels quite cool initially but eventually your body puts out enough heat and it "runs out" of cooling.
Although this blanket doesn't magically actively generate cooling, its quite effective because it operates fundamentally differently from most blankets. Most blankets are engineered to keep you warm by trapping heat in; this blanket is explicitly designed to draw heat away from your body. As such, it is extremely effective if you use a fan or run the AC, because your body heat is drawn away from the top surface and the inner surface can "grab" and remove more heat. As you probably know, air is a great insulator so this blanket has to be making contact with your body to achieve the cooling effect. If you are familiar with the way "Under Armor" works, I believe this blanket uses a similar principle to keep you cool.
This blanket is quite light weight and comfortable, with a very silky (polyester) feeling outer surface. I have not owned this for a year yet, but I'm quite confident that this blanket would be suitable for winter (in Southern California); except if you live in a snowy region.
5/5 for a somewhat high tech blanket that keeps you cool; its the best in cooling you can get without resorting to "active" cooled blankets such as ones with water circulation.
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Reviewed in the United States on May 5, 2026
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