Home Electrical & Electronics Basic Components Heat Sinks 5N-9421: EXCITER A
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Electrical & Electronics Basic Components Heat Sinks 5N-9421: EXCITER A 5N-9421: EXCITER A
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Factory Fit This part is designed to fit your Cat equipment based on the manufacturer’s specifications.
Any changes to the manufacturer’s configuration might result in the product not fitting your Cat equipment. Please consult your Cat Dealer before purchasing to ensure that this part is appropriate for your Cat equipment in its current condition and assumed configuration. This indicator cannot guarantee compatibility for all parts.
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Parts See All Categories AttachmentsAttachments See All Attachments Adapters Augers Backhoes Bale Grabs Bale Spears Blades Brooms Brushcutters Buckets - Backhoe Buckets - Compact Wheel Loader Buckets - Medium Wheel Loader Buckets - Mini Hydraulic Excavator (0 - 10T) Buckets - Skid Steer Loader Buckets - Small Wheel Loader Cold Planers Compactors Couplers Flail Mowers Forks Grapple HammersHammers See All Hammers Hammer Brackets Hammer Lines Hammer Tools Hammers Material Handling Arms Mulchers Rakes Rippers Saws Smart Grader Blades Snow Blowers Snow Plows Snow Pushes CabsCabs See All Cabs Alarms & HornsAlarms & Horns See All Alarms & Horns Alarms Horns Cab Assemblies Cab Canopies Cab Displays & GaugesCab Displays & Gauges See All Cab Displays & Gauges Cab Displays Cab Gauge Clusters Gauges Cab DoorsCab Doors See All Cab Doors Cab Door Assemblies Cab Door Handles Cab Grab Handles Cab Hand Levers Cab Latches Cab Entertainment SystemsCab Entertainment Systems See All Cab Entertainment 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Mufflers Other Exhaust System Components Wastegate FEAD & Housing SystemsFEAD & Housing Systems See All FEAD & Housing Systems Crankshaft Adapters FEAD & Fan Drive Brackets Fan Adapters Fan Drive Groups Front & Rear Housings Pump & Auxiliary Adapters Fuel SystemFuel System See All Fuel System Actuators Carburetors & Governors Fuel Injectors Fuel Lines/High Pressure Lines Fuel Pressure Fuel Pumps Fuel Rails Fuel System Valves Fuel Tanks Injector Nozzles Other Fuel System Components Seals for Fuel Systems Ignition/Electrical SystemIgnition/Electrical System See All Ignition/Electrical System Alternators Ignitions Oil Mist Detectors Spark Plugs Starters Lubrication SystemLubrication System See All Lubrication System Breathers Closed Crankcase Ventilation (CCV) Disposal & OCV Lines Oil Fills Oil Lines Oil Pans Oil Pump Components Oil Pumps Oil Renewal System Valve Assembly Other Lubrication Components Regulators Turbo SystemTurbo System See All Turbo System Diffusers & Nozzles Housings & 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Lips Base Edge Assemblies Base Edges Cast Lips Bucket Corners & Corner GuardsBucket Corners & Corner Guards See All Bucket Corners & Corner Guards Bucket Corner Guards Bucket Corners Bucket Cutting Edges & Edge ProtectionBucket Cutting Edges & Edge Protection See All Bucket Cutting Edges & Edge Protection Bucket Cutting Edge Segments Bucket Cutting Edges Bucket End Bits Bucket Leveling Edges Half Arrow Cutting Edges Half Arrow End Bits Half Arrow Segments Modular Shrouds Shrouds Top Covers Bucket Teeth & Adapter SystemsBucket Teeth & Adapter Systems See All Bucket Teeth & Adapter Systems Adapter Covers Adapters Box Teeth Bucket Teeth Lip & Adapter Repair Noses Tooth Bars Tooth Couplers Compactor Wheel Ground Engaging ToolsCompactor Wheel Ground Engaging Tools See All Compactor Wheel Ground Engaging Tools Compactor Wheel Teeth Compactor Wheel Tooth Assemblies Compactor Wheel Tooth Bases Grader Bit SystemsGrader Bit Systems See All Grader Bit Systems Grader Bit Adapter Boards Grader Bit Angling Plates Grader Bits Grader Cutting Edges & End BitsGrader Cutting Edges & End Bits See All Grader Cutting Edges & End Bits Grader Cutting Edges Grader End Bit Overlays Grader End Bits Ground Engaging Tool Hardware & RetentionGround Engaging Tool Hardware & Retention See All Ground Engaging Tool Hardware & Retention CapSure Locks CapSure Sleeves Ground Engaging Tool Bolts Ground Engaging Tool Caps & Plugs Ground Engaging Tool Mounting Lugs Ground Engaging Tool Nuts Ground Engaging Tool Pins Ground Engaging Tool Retainers Ground Engaging Tool Washers Rock Deflectors Ground Engaging Tool Service Tools & GaugesGround Engaging Tool Service Tools & Gauges See All Ground Engaging Tool Service Tools & Gauges Ground Engaging Tool Gauges Ground Engaging Tool Service Tools Other Ground Engaging ToolsOther Ground Engaging Tools See All Other Ground Engaging Tools Mulcher Teeth Wire Rope Paving Ground Engaging ToolsPaving Ground Engaging Tools See All Paving Ground Engaging Tools Paving Cutting Bits Paving Screed Plates Ripper & Scarifier Ground Engaging ToolsRipper & Scarifier Ground Engaging Tools See All Ripper & Scarifier Ground Engaging Tools Ripper Shank Protectors Ripper Shank Repair Noses Ripper Shanks Ripper Teeth Scarifier Shanks Scarifier Teeth Rock Drill Ground Engaging ToolsRock Drill Ground Engaging Tools See All Rock Drill Ground Engaging Tools Down-The-Hole Hammer Adapters Down-The-Hole Hammer Assemblies Down-The-Hole Hammer Bits Tricone Drill Bits Tricone Drill Nozzles Scraper Ground Engaging ToolsScraper Ground Engaging Tools See All Scraper Ground Engaging Tools Scraper Cutting Edges Scraper Elevator & Ejector Parts Scraper Router Bits Side Cutters & Sidebar ProtectionSide Cutters & Sidebar Protection See All Side Cutters & Sidebar Protection Side Cutters Sidebar Protector Shear Blocks Sidebar Protectors Wing Shrouds Wear PlatesWear Plates See All Wear Plates Back Drag Bars Base Edge Wear Plates Bucket Rear Wear Plates Heel Plates Liner Wear Plates Sidebar Wear Plates Ski Plates Sole Plates Wear ProtectionWear Protection See All Wear Protection Base Edge End Protectors Bolt Savers Chocky Bars Heel Shrouds Mechanically Attached Wear Plate System (MAWPS) Roll Bars Wear Bars Wear Blocks Wear Buttons Wear Lugs Hardware, Seals, & ConsumablesHardware, Seals, & Consumables See All Hardware, Seals, & Consumables Bars, Plates, & Angle BracketsBars, Plates, & Angle Brackets See All Bars, Plates, & Angle Brackets Angle Brackets Flat Common Shape Plates Irregular Plates Other Bar, Plates, & Angle Brackets Square, Hex, & Round Bars Bearings & BushingsBearings & Bushings See All Bearings & Bushings Caps Leg Pockets Other Bearings & Bushings Retainers Ring Half Rolling Elements Sleeves Spherical Plains Trunnions Belts & PulleysBelts & Pulleys See All Belts & Pulleys Belts Pulleys Channels & TubesChannels & Tubes See All Channels & Tubes Standard Channels Structural Tubes U-Channels Foam, Insulation, & LinersFoam, Insulation, & Liners See All Foam, Insulation, & Liners Cab Insulation Heat Shields Insulation Groups & Assemblies Irregular Round Square Rectangle Triangles Tubular Exhaust Sleeves Handles, Latches, & Hand LeversHandles, Latches, & Hand Levers See All Handles, Latches, & Hand Levers Cab Door Handles Cab Grab Handles Cab Hand Levers Cab Latches HardwareHardware See All Hardware Bumpers Clamps Fasteners Grommets Hinges Isolation Mounts Keys Lifting Components Link Brackets & Components Other Hardware Pins Retaining/Snap Rings Rod Ends & Control Rods Spherical Balls Springs Washers & Spacers Wire Ropes, Cables, & Chains Hardware Kits Hoses & Tubes Information, Messages, & MarkingsInformation, Messages, & Markings See All Information, Messages, & Markings Films Other Identification Components Plates Tags Linkage Pins & Sleeve BearingsLinkage Pins & Sleeve Bearings See All Linkage Pins & Sleeve Bearings Flag Pin Assemblies & Components Headed Pins Keeper Bar Pins & Components Linkage Pins Multiple OD Pins Other Linkage Pins & Sleeve Bearings Other Pins & Pin Assembly Plain Pins Retaining Ring Pins Sleeve Bearings Tapered Fit Pins O-Ring Kits Seals, Gaskets, & O-RingsSeals, Gaskets, & O-Rings See All Seals, Gaskets, & O-Rings Backup Rings Bulk Seals D-Rings Gaskets Kits Loose Lip Pistons Metal Rings O-Rings Other Seals Press-In-Place Quad Rings Rectangular Seals & Rings Rotating Sealing Washers Seals for Fuel Systems Weatherstrips Window & Panel Seals Hoses & TubesHoses & Tubes See All Hoses & Tubes Adapters, Couplings, & FittingsAdapters, Couplings, & Fittings See All Adapters, Couplings, & Fittings Adapters & Components Couplings Custom Adapters Fittings Caps & PlugsCaps & Plugs See All Caps & Plugs Caps Other Caps & Plugs Plugs Stoppers Hoses, Hose Assemblies, & Hose ComponentsHoses, Hose Assemblies, & Hose Components See All Hoses, Hose Assemblies, & Hose Components Bulk Hoses Coolant Hoses Engine & Brake Hoses Fixed Length Hoses Fuel Hoses Heating & Air Conditioning Hoses High Pressure 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Motors Hydraulic Repair & Service KitsHydraulic Repair & Service Kits See All Hydraulic Repair & Service Kits General Hydraulics Repair & Service Kits Hydraulic Cylinder Seal Kits Hydraulic Tanks, Reservoirs, & Other Tank ComponentsHydraulic Tanks, Reservoirs, & Other Tank Components See All Hydraulic Tanks, Reservoirs, & Other Tank Components Hydraulic Tank Components Hydraulic Tanks & Reservoirs Hydraulic Valve Groups & ComponentsHydraulic Valve Groups & Components See All Hydraulic Valve Groups & Components Hydraulic Brake Valves Hydraulic Cartridge Valves Hydraulic In-Line Valves Hydraulic Joystick Valves Hydraulic Main Control Valves Hydraulic Valve Components Manually Operated Valves Other Hydraulic Valves Other Hydraulic Components Structures & Other Systems ComponentsStructures & Other Systems Components See All Structures & Other Systems Components Custom Structures Fire Suppression System & ComponentsFire Suppression System & Components See All Fire Suppression System & Components Actuators Controllers & Modules Extinguishers Nozzles Grease Lubrication SystemsGrease Lubrication Systems See All Grease Lubrication Systems Grease Zerks Lube Valves & Injectors Lubrication Pumps Guard Assembly Structures Heavy Frame & Body FabricationsHeavy Frame & Body Fabrications See All Heavy Frame & Body Fabrications Compactor Wheels Counterweight & Ballasts External ROPS Grab, Lift, & Push Structures Machine Frame Other Heavy Fabrications Payload Carrying Structure Track Frames Truck Bodies & Liners Light Frame & Body FabricationsLight Frame & Body Fabrications See All Light Frame & Body Fabrications Enclosures & Doors Grates, Grills, & Screens Handrails Ladders Levers & Links Other Light Fabrications Stairways Steps Track Fenders Tread Plates Walkways & Platforms Wheel Fenders Other Covers & SupportsOther Covers & Supports See All Other Covers & Supports Custom Supports Custom Tubular Supports Metallic Covers Non-Metallic Covers & Supports Scraper Elevator & Ejector Systems Tanks & ComponentsTanks & Components See All Tanks & Components Air Tanks DEF Tanks Fuel Tanks Gauges Other Tank Components Pressure Caps Washdown Tanks Washer Fluid Tanks UndercarriageUndercarriage See All Undercarriage BogiesBogies See All Bogies Bogies Pin Assembly and Cartridges Guards Rolling ComponentsRolling Components See All Rolling Components Bottom Rollers Carrier Roller Groups Carrier Roller Rim Assemblies Cast and Forged Idlers Collars Fabricated Idler Components Front Idler Groups Idler Assemblies Idler Groups Miscellaneous Rolling Components Mounting Caps, Blocks, and Bearing Mounts Rims Shafts Sliders Sprockets and Segments Track Roller Groups Track Roller Rim Assemblies Rubber Track Undercarriage ComponentsRubber Track Undercarriage Components See All Rubber Track Undercarriage Components Idlers Miscellaneous Components Multi Terrain Loader Rollers Sprockets Rubber Tracks SealsSeals See All Seals Backup Rings and Rectangular Seals Duo Cone Groups O-Rings Rings Toric Rings StructuresStructures See All Structures Frame Assemblies Plates and Brackets Track AdjustmentTrack Adjustment See All Track Adjustment Equalizer Parts Recoil Groups and Parts Track Tensioner and Adjuster Components Track ComponentsTrack Components See All Track Components Bearing Sleeves Cartridge Assembly Inserts Link Assemblies Miscellaneous Track Components Track Group Segments Track Groups Track Links Track Pads Track Pins Track Seals Track Shoes Undercarriage HardwareUndercarriage Hardware See All Undercarriage Hardware Bolts Nuts Washers Undercarriage KitsUndercarriage Kits See All Undercarriage Kits Carrier Roller Group Kits Guard Kits Idler Group Kits Link Group Kits Sprocket Group Kits Track Pad Group Kits Track Roller Group Kits Undercarriage Arrangements Undercarriage Miscellaneous PartsUndercarriage Miscellaneous Parts See All Undercarriage Miscellaneous Parts Bushings and Bearings Pins Shafts Spacers Upgrade & Repair KitsUpgrade & Repair Kits See All Upgrade & 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Parts See All Categories AttachmentsAttachments See All Attachments Adapters Augers Backhoes Bale Grabs Bale Spears Blades Brooms Brushcutters Buckets - Backhoe Buckets - Compact Wheel Loader Buckets - Medium Wheel Loader Buckets - Mini Hydraulic Excavator (0 - 10T) Buckets - Skid Steer Loader Buckets - Small Wheel Loader Cold Planers Compactors Couplers Flail Mowers Forks Grapple HammersHammers See All Hammers Hammer Brackets Hammer Lines Hammer Tools Hammers Material Handling Arms Mulchers Rakes Rippers Saws Smart Grader Blades Snow Blowers Snow Plows Snow Pushes CabsCabs See All Cabs Alarms & HornsAlarms & Horns See All Alarms & Horns Alarms Horns Cab Assemblies Cab Canopies Cab Displays & GaugesCab Displays & Gauges See All Cab Displays & Gauges Cab Displays Cab Gauge Clusters Gauges Cab DoorsCab Doors See All Cab Doors Cab Door Assemblies Cab Door Handles Cab Grab Handles Cab Hand Levers Cab Latches Cab Entertainment SystemsCab Entertainment Systems See All Cab Entertainment Systems Antenna Power Sockets Radio Accessories Radios Speakers & Grills USB Ports Cab HVAC SystemsCab HVAC Systems See All Cab HVAC Systems Cab Accumulators, Receivers, & Dryers Cab Air Conditioning Assemblies Cab Air Conditioning Compressors Cab Air Filters Cab Blowers Cab Ducting Cab Evaporators Cab Thermostats Louvers Other Cab HVAC Components Cab InteriorCab Interior See All Cab Interior Cab Dash & Trims Cab Emergency Exit Components Cab Floormats Cab Insulation Cab Seats & Components Cab Storage Cab Security Cab VisibilityCab Visibility See All Cab Visibility Mirrors Other Visibility Components Other Window & Glass Components Shades Vision Systems Visors Washer Fluid Tanks Windows & Glass Windshield Wipers, Washers, & Components Cab Windows & Panel Weatherstrips & SealsCab Windows & Panel Weatherstrips & Seals See All Cab Windows & Panel Weatherstrips & Seals Weatherstrips Window & Panel Seals Electric Cab Operator ControlsElectric Cab Operator Controls See All Electric Cab Operator Controls Cab Buttons & Knobs Cab Switches Cameras HVAC Joystick Components Joysticks Keypads Other Cab Controls Rotary & Jog Dial Modules Stalks Wiper Switches Mechanical Cab Operator ControlsMechanical Cab Operator Controls See All Mechanical Cab Operator Controls Foot Pedals Mechanical Control Levers Other Operator Control Components Steering Wheels Other Cab Components Telematics DrivetrainDrivetrain See All Drivetrain Axles & ComponentsAxles & Components See All Axles & Components Axle Components Axles Brakes & ComponentsBrakes & Components See All Brakes & Components Brake Drums Brake Hubs Brake Linings Brake Master Cylinders Brake Reservoir Tanks Brake Shoe Assemblies Brakes Camshafts Hydraulic Brake Valves Other Brake Components Parking Brake Discs Clutches & ComponentsClutches & Components See All Clutches & Components Clutch Housing Clutch Plates Clutch-Brake Hub Clutches DifferentialsDifferentials See All Differentials Differential Bearing Kits Differential Bearings Differential Carriers Differential Case & Housing Assemblies Differential Cases Differential Friction Discs Differential Gears Differential Groups Differential Plates Differential Spiders Other Differential Components Drive Chains & SprocketsDrive Chains & Sprockets See All Drive Chains & Sprockets Drive Chains Drive Sprockets Driveshafts & JointsDriveshafts & Joints See All Driveshafts & Joints Driveshaft Plates Driveshafts Joints Other Driveshaft & Joint Components Drivetrain Filters & FluidsDrivetrain Filters & Fluids See All Drivetrain Filters & Fluids Drivetrain Filters Drivetrain Fluids Drivetrain Repair & Service KitsDrivetrain Repair & Service Kits See All Drivetrain Repair & Service Kits Drivetrain & Steering Kits Drivetrain Bearing Kits Drivetrain Gasket Kits Final DriveFinal Drive See All Final Drive Final Drive Bearing Kits Final Drive Bearings Final Drive Damper Plates Final Drive Duo Cone Seals Final Drive Gears Final Drive Plates Final Drives Friction Discs Other Final Drive Components GearsGears See All Gears Other Gears Planet Gears Pump Gears Ring Gears Sun Gears Other Drivetrain ComponentsOther Drivetrain Components See All Other Drivetrain Components Adapters & Couplings Drive Groups Drivetrain Friction Discs Drivetrain Pump Valves Drivetrain Separator Plates Drivetrain Shafts & Shaft Assemblies Drivetrain Structural Components Other Drivetrain Components SteeringSteering See All Steering Other Steering Components Steering Friction Discs Steering Plates Tires & RimsTires & Rims See All Tires & Rims Mounting Discs Mudflaps Rim Components Rims Tire & Tire Components Torque Converters & ComponentsTorque Converters & Components See All Torque Converters & Components Torque Converter Bearings Torque Converter Components Torque Converters Transmissions & ComponentsTransmissions & Components See All Transmissions & Components Other Transmission Components Transmission Arrangements Transmission Bearing Kits Transmission Bearings Transmission Cases & Assemblies Transmission Friction Discs Transmission Gasket Kits Transmission Gears Transmission Plates Transmission Rotor Wheels Yokes & Yoke AssembliesYokes & Yoke Assemblies See All Yokes & Yoke Assemblies Yoke Assemblies Yokes Electrical & ElectronicsElectrical & Electronics See All Electrical & Electronics Alarms & HornsAlarms & Horns See All Alarms & Horns Alarms Horns Basic ComponentsBasic Components See All Basic Components Alternators Bus Bars Capacitors Circuit Breakers & Fuses Coils Diodes Generators Heat Sinks Motors Rectifiers Regulators Relay Resistors Solenoids Starters Transducers BatteriesBatteries See All Batteries Battery Components General Duty Heavy Duty Other Batteries Uninterruptible Power Supply Cab Displays & GaugesCab Displays & Gauges See All Cab Displays & Gauges Cab Displays Cab Gauge Clusters Cab Gauges Cab Entertainment SystemsCab Entertainment Systems See All Cab Entertainment Systems Antenna Power Socket Radio Accessories Radios Speaker & Grill USB Port 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