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Craftsman
Water Pump

Model # 3902521 Official Craftsman pump

Here are the diagrams and repair parts for Official Craftsman 3902521 pump, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 34 parts  |
0-ring U9-226
#19

Pump only diagram

0-ring

Part #U9-226

$10.71
In Stock
Pump Impeller J105-40PE
#8

Pump only diagram

Pump impeller

Part #J105-40PE

$139.59 | 
8% OFF Phone Price : $151.59
In Stock
Pump Venturi N32P-66
#12

Pump only diagram

Pump venturi

Part #N32P-66

$57.40
In Stock
Connector L43-5C
#30

Pump only diagram

Connector

Part #L43-5C

$19.77
Back Order
Pump Body Jet Insert N76-29P
#14

Pump only diagram

Pump body jet insert

Part #N76-29P

$71.79 | 
8% OFF Phone Price : $77.79
Back Order
Pump Check Valve (replaces N12-12p) N166-5P
#20

Pump only diagram

Pump check valve (replaces n12-12p)

Part #N166-5P

$123.89 | 
9% OFF Phone Price : $135.89
Back Order
Draincock U212-68T
#22

Pump only diagram

Draincock

Part #U212-68T

The manufacturer no longer makes this part, and there's no substitute part

Pad Motor C35-11
#27

Pump only diagram

Pad motor

Part #C35-11

This item is not returnable
$6.27
In Stock
Pump Nozzle N34P-19
#13

Pump only diagram

Pump nozzle

Part #N34P-19

$22.73
In Stock
Pump Motor Base C4-42P
#25

Pump only diagram

Pump motor base

Part #C4-42P

$118.62
In Stock

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