SKU: 77725866835

1781 1973-1991 Jeep AMC 304 360 401 water pump

Sale price$122.35 Regular price$135.95
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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9

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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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BoxerJoe
Massapequa, US
★★★★★ 4
Worth The Price
Size: Medium, Color: Black
Arrived on time with no issues. Quality was fine for the low price. I needed some summer shirts after losing weight and did not want to spend a lot. Solid purchase for the price, so I ordered several. Sixty-five pounds later, they served their purpose.
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Reviewed in the United States on April 23, 2026
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JDGuent
Charlottesville, US
★★★★★ 5
Fit well at my size
Size: XX-Large, Color: White
Fit well at my size. Good shirt
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Reviewed in the United States on April 15, 2026
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Sandy Bourn
Charlottesville, US
★★★★★ 5
Good
Size: XX-Large, Color: Black
Good material and true to size
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Reviewed in the United States on April 15, 2026
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Kaneisha Johnson
Draper, US
★★★★★ 5
Great Quality
Size: Large, Color: Light Blue
Very nice
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Reviewed in the United States on April 1, 2026
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Amber A
Omaha, US
★★★★★ 3
Nice shirt, odd fit
Size: X-Large, Color: Dark Grey, Size: X-Large, Color: Dark Grey
This shirt looks and feels very nice, and there's no weird stitching or loose threads, but the fit was a little off. It was a little short on my husband who is 6'1", but if he stands with his hands down it doesn't really LOOK too short. It's when he raises his arms for anything that it seems weirdly tight across his the chest and it pulls the hem of the shirt up quite a lot. This could just be a body type thing, but he doesn't have that issue in other shirts the same size and style. It's a shame because the shirt itself seems really nice.
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Reviewed in the United States on February 7, 2026

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