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Our offices are closed for Thanksgiving. Orders placed online will be processed on Monday 12/1/2025.

Our offices are closed for Thanksgiving. Orders placed online will be processed on Monday 12/1/2025.

John Deere 4-Cylinder 400 Series Thermostats and Water Pumps

Discover our large selection of high-quality aftermarket cooling system parts for John Deere 4-270 engines, including Thermostats and Water Pumps.

If you do not see the John Deere part you are looking for, please use our quote request form or call us at 888.687.0539: our knowledgeable inside sales staff will gladly assist you.


WATER PUMP (CASTING R26337, R27547, R34982, R41318, R44122)

$173.30

WATER PUMP REPAIR KIT (EARLY STYLE WITH HAIR PIN CLIP)

$74.35

WATER PUMP REPAIR KIT (LATE STYLE WITHOUT CLIP IN HOUSING)

$72.85

WATER PUMP OVERHAUL KIT - 4-270D / 6-404D

$117.45

THERMOSTAT (180degF)

$18.09