SKU: 77725866835

1781 1973-1991 Jeep AMC 304 360 401 water pump

Sale price$122.35 Regular price$135.95
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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:
  • CNC Machined aluminum impeller with 16 vanes
  • Protected with a military grade Type II Class II surface coating
  • Impeller chamber is directional to clockwise rotation
  • Lower radiator hose exits left front side (driver's side)
  • Fits American Motors, Jeep products
  • Alternative Part Numbers 3227694, 3234411, 3234427, 8122306, 8125131, EA259, F8125131, J3227694, J3234427, J8122306, J8125131, JR775050
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:
  1. 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
SKU: 77725866835

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Patrick Wright
Massapequa, US
★★★★★ 5
Check if your Subaru has / needs a plastic tray
Size: 72880-FL00A
Works great for my 2015 Subaru Outback, not so much for my 2013 Impreza in terms of installation, missing plastic holder for 2013 Subaru Impreza, while 2015 outback does not require the plastic holder
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
T
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Taryn L. Law
Los Angeles, US
★★★★★ 5
Perfect fit. 2024 Crosstrek.
Size: 72880-FL00A
Perfect fit 2024 crosstrek!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
R
Verified Purchase
Riggs
Birmingham, US
★★★★★ 5
Fits my 2026 civic sport perfect!
Size: AF151
No issues, fitment is perfect. Great quality for an excellent price. Dealer wanted like $24 for a basic one. Nah I'm good I'll just go on Amazon and get it for $8. Took 30 seconds from start to finish can't get any easier.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
A
Verified Purchase
Ant Farmer 1
Houston, US
★★★★★ 5
Fits well and installs easily.
Size: AF997
This filter looked about the same as the OEM filter. It installed in about a minute. The quality appeared to be fine. It was protected in a cardboard box. It fit my 2014 Subaru Outback perfectly. I just installed it an hour ago so I don’t have any long term observations about longevity or effectiveness. I can’t see any reason why it would not work as well as the original, it seemed identical.
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Reviewed in the United States on May 29, 2026
N
Verified Purchase
Nicholas K
Boise, US
★★★★★ 5
Great filter
Size: AF259
This fit my Mazda CX-5 perfectly. I'm happy with the seal and quality. Great price. I will certainly reorder for my next replacement.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026

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