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  • AP AIR, INC.
  • 805 13th Street North
  • Humboldt, IA 50548
  • 800-806-5312
  • 1101 Center Street
  • Redding, CA 96001
  • 855-984-8511

CATERPILLAR 621K MOTOR SCRAPER

Blower Motors

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Blower Speed Resistor - Variable - 12V
220-544

Variable Fan Resistor - 12V

125-9740

Fits WTA , WTE, WTL, WTP

385-7511 - OE Caterpillar Blower Motor - 24 Volt, 5/16 Shaft
BM11264

Pressurizer Motor

321-3374, 385-7511

Fits WTA

24 Volt Single Speed, 2 Wire, 5/16 Shaft, Caterpillar
BM24226

Blower Motor, 24V

316-1927

Fits WTE

466-7341 - Blower Motor with Wheel, 24V - Caterpillar
BM3512

Blower Motor with Wheel

466-7341

Fits WTA , WTE, WTL, WTP

5 1/2 Diameter, 5/16 Shaft, CW - Blower Wheel
BW238

Blower Wheel

3E-0400

Fits WTE, WTP - With BM24226 Dual Shaft Blower Motor

Condenser Motor Assembly
TBA 391-8893

Condenser Motor Assembly

391-8893

Fits WTA , WTE, WTL, WTP

Cab Products/Filters

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Cab Filter
TBA 268-6704

Cab Filter

268-6704

Fits WTE, WTP

Charge Air Coolers

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Charge Air Cooler
TBA 324-8952

Charge Air Cooler

324-8952

Fits WTA, WTE

Charge Air Cooler
TBA 380-1341

Charge Air Cooler

380-1341

Fits WTL, WTP

Compressors

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OE Sanden Compressor SD7H15HD - 133mm, 8 Groove Clutch, 24V
509-683

OE Sanden Compressor SD7H15HD - 133mm, 8 Groove Clutch, 24V

320-1291, 472-0559

Fits WTA , WTE, WTL, WTP

Alternative Compressor SD7H15 - 133mm, 8 Groove Clutch, 24V
509-6833

Alternative Compressor SD7H15 - 133mm, 8 Groove Clutch, 24V

320-1291, 472-0559

Fits WTA , WTE, WTL, WTP

Condensers

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394-6377 - Caterpillar Condenser
400-9031

Condenser

394-6377, 320-2151

Fits WTA , WTE, WTL, WTP

Evaporators

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Evaporator
TBA 320-2149

Evaporator

320-2149

Fits WTA , WTE, WTL, WTP

Evaporator
TBA 339-6505

Evaporator

339-6505

Fits WTE, WTP - With BM24226 Dual Shaft Blower Motor

Expansion Valves

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EC2500-01S - Orifice Tube, Red
905-925

Orifice Tube

7X-2049

Fits WTA , WTE, WTL, WTP

Heater Actuators

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Heater Actuator - Electronic
TBA 563-0397

Heater Actuator - Electronic

563-0397

Fits WTA , WTE, WTL, WTP

Heater Valves

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Heater Valve
TBA 521-2576

Heater Valve

521-2576

Fits WTA , WTE, WTL, WTP

Heaters, Heater Cores

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Heater Core
TBA 130-9224

Heater Core

130-9224

Fits WTE, WTP - With BM24226 Dual Shaft Blower Motor

Heater Core
TBA 238-8839

Heater Core

238-8839

Fits WTA , WTE, WTL, WTP

Radiators

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Radiator
TBA 334-1682

Radiator

334-1682

Fits WTA, WTE

Radiator
TBA 356-0883

Radiator

356-0883

Fits WTL, WTP

Rec Driers/Accumulators

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2.5 x 10.75 Pad Mount - Dry-Tech Series
800-1376

Heavy Duty Dry-Tech Series Receiver Drier

320-0562, 320-0563

Fits WTA , WTE, WTL, WTP

4 x 8 1/2 Pad Mount - Dry-Tech Series
804-5368

Heavy Duty Dry-Tech Series Accumulator

320-0564

Fits WTA , WTE, WTL, WTP

Switches/Electrical

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Preset Thermostatic Switch - Caterpillar
210-973

Thermostatic Switch

3E-5464

Fits WTE, WTP - With BM24226 Dual Shaft Blower Motor

355-3148 - Binary Pressure Switch, Normally Open
220-10612

Binary Pressure Switch with Aftermarket Wire Harness and OE Connector

355-3148

Fits WTA , WTE, WTL, WTP

Eliminates Pin Connection at Pressure Switch
For Switch Only Order a 220-1061

355-3148 - HD Binary Pressure Switch with OE Wire Harness, Normally Open
220-1061HD

Binary Pressure Switch with HD OE Wire Harness and Connector

355-3148

Fits WTA , WTE, WTL, WTP

For Switch Only Order a 220-1061

308-2525 - Caterpillar Temperature Sensor
220-4757

Temperature Sensor

308-2525

Fits WTA , WTE, WTL, WTP

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