It looks like your browser does not have JavaScript enabled. Please read our
supported browser policy
for the best browsing experience.
Menu
FinditParts
Login
All orders proudly shipped from the U.S.A.
Close search
(888) 312-8812
Cart
Login
FinditParts
Find a Part
Shop by Manufacturer
Shop by Category
Shop by Truck
Track/Return Order
Contact Us
About FinditParts
Join FinditParts Pro
Industry News & Insights
Back
Average Truck Driver
Salaries
Truck Stop Safety
Dangerous Truck Roads
Safe Driving Around Semi Trucks
Truck Accident Statistics
Semi Truck Repair & Maintenance
Trucking Business Tips
View All Articles
Need help? We're here!
(888) 312-8812
Login
Signup
Electrical & Lighting
Engine & Drivetrain
Brakes, Suspension, & Steering
Body
Tire & Wheel
Other Parts & Supplies
Top Searches
Electrical, Lighting and Body
Air Bag System
Anti-Theft System
Body Actuators and Motors
Body Wiring Harness and Components
Brackets, Flanges and Hangers
Control Modules
Electrical Connectors
TOP SELLER
Electrical Sockets
Flasher Units, Fuses, and Circuit Breakers
Gaskets and Sealing Systems
Glass, Windows and Related Components
Hardware, Fasteners and Fittings
Lighting - Exterior
TOP SELLER
Lighting - Instrumentation
Lighting - Interior
Mobile Multi-Media
Power Outlets
Relays
Sensors
Steering Column
Steering Wheel
Switches, Solenoids and Actuators
TOP SELLER
Towing
Trunk Lid and Compartment
Warning Buzzers
Wire, Cable and Related Components
Electrical, Charging and Starting
Alternator / Generator and Related Components
Battery and Related Components
Brackets, Flanges and Hangers
Electrical Connectors
TOP SELLER
Hardware, Fasteners and Fittings
Relays
Starter and Related Components
Switches, Solenoids and Actuators
TOP SELLER
Voltage Regulator
Close
Engine
PAI Engine Kits
Cylinder Block Components
Filters
TOP SELLER
Gaskets and Sealing Systems
Hardware, Fasteners and Fittings
TOP SELLER
Valve Train Components
Driveline and Axles
Axle Shaft
Bearings
Differential
Drive Shaft
Gaskets and Sealing Systems
Hardware, Fasteners and Fittings
TOP SELLER
Hubs and Related Components
Power Take Off (PTO) and Components
Service Kits
Switches, Solenoids and Actuators
Wheel Bearings, Seals, and Related Components
Air and Fuel Delivery
Carburetion
Filters
TOP SELLER
Fuel Injection System and Related Components
Fuel Pumps and Related Components
Fuel Storage
Hardware, Fasteners and Fittings
TOP SELLER
Wire, Cable and Related Components
Transmission
Hardware, Fasteners and Fittings
TOP SELLER
Manual Transmission Components
Transmission Components
Exhaust
Exhaust and Tail Pipes
Hardware, Fasteners and Fittings
TOP SELLER
Mufflers
Ignition
Emission Control
EGR and Related Components
Emission Components
Sensors
Belts and Cooling
Accessory Drive Belt System Components
TOP SELLER
Cooling Fan, Clutch and Motor
Hardware, Fasteners and Fittings
TOP SELLER
Hoses and Pipes
Radiators, Coolers and Related Components
Thermostat and Housing
Water Pump and Related Components
HVAC
A/C Accumulator / Receiver Drier
A/C Clutch and Compressor
A/C Condenser and Evaporator
A/C Flow Restrictors
Filters
TOP SELLER
Hardware, Fasteners and Fittings
TOP SELLER
Hoses and Pipes
Motors, Core, Case and Related Components
Switches, Solenoids and Actuators
Close
Suspension
Alignment
Brackets, Flanges and Hangers
Bushings
Hardware, Fasteners and Fittings
TOP SELLER
Hoses and Pipes
Instrument Panel
Sensors
Shocks and Struts
Steering, Gear and Related Components
Suspension, Springs and Related Components
TOP SELLER
Switches, Solenoids and Actuators
Valves
TOP SELLER
Wire, Cable and Related Components
Steering
Bearings
Brackets, Flanges and Hangers
Filters
Gaskets and Sealing Systems
Hardware, Fasteners and Fittings
TOP SELLER
Power Steering Hoses, Pumps, and Related Components
Sensors
Steering Column
Steering, Gear and Related Components
Brake
ABS Components
Body Wiring Harness and Components
Brackets, Flanges and Hangers
Brake Hydraulics
Brake System Service
Bushings
Control Cables
Control Modules
Disc Pads and Brake Shoes
Drums and Rotors
Electrical Connectors
Filters
Gaskets and Sealing Systems
Hardware, Fasteners and Fittings
TOP SELLER
Hoses and Pipes
Relays
Sensors
Service Kits
Switches, Solenoids and Actuators
Universal
Valves
TOP SELLER
Wire, Cable and Related Components
Close
Body
Aero Ground Effects and Body Kits
Brackets, Flanges and Hangers
Bumper
Bushings
Console
Cowl
Dashboard
Doors
TOP SELLER
Fenders
Floor
Frame
TOP SELLER
Gaskets and Sealing Systems
Glass, Windows and Related Components
Glove Box
Grille
Hardware, Fasteners and Fittings
Hood
Horns
Instrument Panel
Mirrors
TOP SELLER
Quarter Panel
Rear Body
Rocker Panel
Roof
Seats
Sensors
Service Kits
Side Body
Sleeper Cab
Steering Wheel
Switches, Solenoids and Actuators
Tailgate and Midgate
Towing
Truck Box
Truck Cab
Trunk Lid and Compartment
Universal
Vacuum Power System
Valves
Wire, Cable and Related Components
Wiper and Washer
Control Modules
Door Wiper Arm, Blade, and Related Components
Hardware, Fasteners and Fittings
Motors
Switches, Solenoids and Actuators
Windshield Washer and Related Components
Windshield Wiper Arm, Blade, and Related Components
Windshield Wiper Motor
Close
Tire and Wheel
Brackets, Flanges and Hangers
Control Modules
Electrical Connectors
Gaskets and Sealing Systems
Hardware, Fasteners and Fittings
TOP SELLER
Hoses and Pipes
TOP SELLER
Sensors
Spare Tire and Wheel
Tire
Wheel
TOP SELLER
Close
Hardware and Service Supplies
Assortments
Bearings
Brackets, Flanges and Hangers
Bushings
Control Cables
Displays and Merchandisers
Electrical Connectors
Gaskets and Sealing Systems
TOP SELLER
Hardware, Fasteners and Fittings
TOP SELLER
Tubing
Valves
Water System Service
Wire, Cable and Related Components
Vehicles, Equipment, Tools, and Supplies
A/C Service
Air Tools
Battery Service
Brake System Service
Engine Service
Fuel Storage
Hand Tools
Hardware, Fasteners and Fittings
TOP SELLER
Hoist, Lift and Support
Hubs and Related Components
Hydraulic System Service
Information Labels
Paint Equipment, Tools and Accessories
Power, Air, and Hand Tools and Accessories
TOP SELLER
Safety Equipment, Tools and Accessories
Shop Equipment, Tools and Accessories
Suspension, Springs and Related Components
Tire Service
Winch
Oil, Fluids and Chemicals
Adhesives, Sealants and Tape
Cleaners and Removers
Functional Fluid, Lubricant, Grease (including Additives)
Paint and Coatings
Multifunction Terms
Flasher Units, Fuses, and Circuit Breakers
Hardware, Fasteners and Fittings
TOP SELLER
Undercar
Underhood
Accessories
Brackets, Flanges and Hangers
Decals and Emblems
Exterior Accessories
Filters
Information Labels
Interior Accessories
Miscellaneous Merchandise
RV and Marine Accessories
Close
Air Brake
Automatic Slack Adjuster
Bumper Bracket
Bumper Cover
Bumper Guard
Bumper Parts
Bumper Plate
Bumper Step
Console Cover
Console Cup Holder
Cowl Cover
Cowl Panel
Disc Brake Rotor
Door Hinge
Door Latch Striker Plate
Door Lock Actuator
Door Lock Kit
Door Lock Striker
Door Sill Plate
Fender
Fender Brace
Fender Bracket
Fender Cover
Fender Flare
Fender Liner
Fender Parts
Fender Support
Fender Trim
Hood Support
License Plate Bracket
Manual Slack Adjusters
Rear View Mirror Bracket
Side Skirt
Slack Adjuster
Steering Wheel Parts
Tow Hook Cover
Trailer Hitch Cover
Trailer Tow Hitch
Truck Bed Parts
Valance Panel
Window Crank Handle
Close
FREE ECONOMY SHIPPING
ON QUALIFYING ORDERS OVER $499
Manufacturer
Mack
Electrical, Lighting and Body
Sensors
Humidity Sensor
Mack Humidity Sensor
Searching...
1-1 of
1 result
Change Filters
Sort:
Sort by relevancy
Sort by bestselling
Sort by Price - Low to High
Sort by Price - High to Low
Sort by Manufacturer - A to Z
Sort by Manufacturer - Z to A
2 filters active
Clear all
Sorted by Vehicle
Mack 21129540
Humidity Sensor
Manufacturer
Mack
Part Type
Humidity Sensor
Our Price
Fetching our lowest price...
$
$302.99
In stock
Checking stock...
View MACK Truck and Auto Parts Directory
Related Articles
Anatomy and Parts of a Semi-Truck Explained
How to Replace a Semi-Truck Battery Yourself: A Step-by-Step Guide
How To Keep Your Truck Cab Clean
