null

Heat & AC Parts

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • BESTfit 3 X 4.75 Inch 1 Speed Vented Blower Motor - Replaces 2809-541-176

    BESTfit 3 X 4.75 Inch 1 Speed Vented Blower Motor - Replaces 2809-541-176

    BESTFIT TRUCK PARTS

    $151.99
    BESTfit Red Dot 12V Stud Mount Blower Motor* High Quality Blower Motor* 12 Volts* 4.75 Inch Length OA Body* Wire Type 2 Wire Harness* 3 Inch Motor Diameter* 4 Motor Length* Stud Mount* CW Roation* 1...
    29-150300007
    SKU:
    29-150300007
    Truck Class:
    Heavy Duty
    Diameter Options:
    3 Inch
    Length Options:
    4 Inch
    Make:
    Mack
    Product Type:
    Interior
    $151.99
    Qty in Cart: 0
    Price:
    $151.99
    Subtotal:
  • BESTfit 12V Brushless Blower Motor Replaces BOA94350, BOAD8587, 85104207 For Freightliner, Volvo

    BESTfit 12V Brushless Blower Motor Replaces BOA94350, BOAD8587, 85104207 For Freightliner, Volvo

    BESTFIT TRUCK PARTS

    $331.99
    BESTfit Vented Variable Speed Flange Mount Blower Motor With Wheel & Single 5/16 Inch Diameter Shaft* High Quality Blower Motor* 12 Volts* Clockwise Rotation* 1 Speed* Plug Wire Type* Flange Mount...
    29-150300001
    SKU:
    29-150300001
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Product Type:
    Interior
    $331.99
    Qty in Cart: 0
    Price:
    $331.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Blower Motor Replaces ABP N83 301028, HA15250, HA1525, 203142BSM For Peterbilt & Kenworth

    Blower Motor Replaces ABP N83 301028, HA15250, HA1525, 203142BSM For Peterbilt & Kenworth

    OPP - ORIGINAL PARTS PROGRAM

    $143.99
    Blower Motor Fits Peterbilt & KenworthThis Blower Motor is a dependable replacement solution for Peterbilt and Kenworth HVAC systems experiencing airflow issues. Designed to replace OEM part numbers...
    29-1503000
    SKU:
    29-1503000
    Diameter Options:
    3 Inch
    Truck Class:
    Heavy Duty
    Length Options:
    4 Inch
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Interior
    $143.99
    Qty in Cart: 0
    Price:
    $143.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Cab Fresh Replacement HVAC Pre-Filter For Peterbilt & Kenworth

    Cab Fresh Replacement HVAC Pre-Filter For Peterbilt & Kenworth

    CAB FRESH FILTER CO.

    $14.27
    Air Filter HVAC Pre-FilterKeep your HVAC system running clean and efficient with this replacement pre-filter designed to fit inside the existing housing assembly. It helps capture dust, debris, and...
    29-091301
    SKU:
    29-091301
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Make:
    Kenworth
    Ready To Ship:
    Yes
    Product Type:
    Interior
    $14.27
    Qty in Cart: 0
    Price:
    $14.27
    Subtotal:
  • FREE SHIPPING OVER $249
    Cab Fresh HVAC Pre-Filter W/ Black Housing For Peterbilt & Kenworth

    Cab Fresh HVAC Pre-Filter W/ Black Housing For Peterbilt & Kenworth

    CAB FRESH FILTER CO.

    $50.99
    Air Filter HVAC Pre-FilterHelp protect your cab's HVAC system with this complete pre-filter assembly featuring a durable housing and replaceable filter element. Designed to capture dust, debris, and...
    29-091300
    SKU:
    29-091300
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $50.99
    Qty in Cart: 0
    Price:
    $50.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 4 PSI Kick-Off Low Air Switch With 1/8-27 NTP Thread, 2 Blade Connector - Replaces FSC-1749-2134

    BESTfit 4 PSI Kick-Off Low Air Switch With 1/8-27 NTP Thread, 2 Blade Connector - Replaces FSC-1749-2134

    BESTFIT TRUCK PARTS

    $7.33
    BESTfit Low Air Pressure Switch With 2-6 Lb. Cutoff & Thread Sealant* High Quality Air Pressure Switch * Specifications: - 4 PSI - 2 - 6 Lb. Cutoff- 1/8 - 27 NTP Connecting Thread- 2 Blade Connector...
    29-071000003
    SKU:
    29-071000003
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Product Type:
    Engine Parts
    $7.33
    Qty in Cart: 0
    Price:
    $7.33
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Stop Lamp Switch Normally Open 1/8-27 NTP Replaces FSC-1749-1907 For Freightliner

    BESTfit Stop Lamp Switch Normally Open 1/8-27 NTP Replaces FSC-1749-1907 For Freightliner

    BESTFIT TRUCK PARTS

    $12.47
    BESTfit 65 PSI Actuation, 75 PSI Deactuation Stop Lamp Switch* High Quality Stop Lamp Switch * Connecting Thread 1/8-27 NTP* 2-Blade Connector Type * Actuation: 65 PSI* Deactuation: 75 PSI * Threaded...
    29-071000002
    SKU:
    29-071000002
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $12.47
    Qty in Cart: 0
    Price:
    $12.47
    Subtotal:
  • FREE SHIPPING OVER $249
    136MM Aluminum Fuel Filter Housing Replaces 8-97372-009-2 For Chevrolet, Isuzu

    136MM Aluminum Fuel Filter Housing Replaces 8-97372-009-2 For Chevrolet, Isuzu

    DAYTON / DORMAN

    $199.99
    136MM Aluminum Fuel Filter Housing Fits Chevrolet & Isuzu* High Quality Fuel Filter Housing* Color: Silver* Length: 136 Mm* Material: Aluminum* Mounting Bracket Included: No* Package Contents: 1 Fuel...
    29-070300000
    SKU:
    29-070300000
    Truck Class:
    Heavy Duty
    Make:
    Chevrolet
    Make:
    Isuzu
    Material Options:
    Aluminum
    Product Type:
    Engine Parts
    $199.99
    Qty in Cart: 0
    Price:
    $199.99
    Subtotal:
  • BESTfit AC Evaporator For Red Dot Sleeper Unit 307110, MVA19246, NA1040

    BESTfit AC Evaporator For Red Dot Sleeper Unit 307110, MVA19246, NA1040

    BESTFIT TRUCK PARTS

    $315.99
    BESTfit AC Evaporator Fits Peterbilt, Freightliner & Western Star With Red Dot Sleeper* High Quality Evaporator* 8 Inch Height* 3 1/8 Inch Width* 8 MM O Ring Inlet / Outlet* Type Tube-Fin* R12/R134a*...
    29-070070
    SKU:
    29-070070
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $315.99
    Qty in Cart: 0
    Price:
    $315.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit AC High Pressure Switch A22-45194-001 For Freightliner & Western Star

    BESTfit AC High Pressure Switch A22-45194-001 For Freightliner & Western Star

    BESTFIT TRUCK PARTS

    $38.45
    AC High Pressure Switch By BESTfitMaintain reliable AC performance in your Freightliner and Western Star trucks with the BESTfit AC High Pressure Switch A22-45194-001. Engineered for durability, it...
    29-070051
    SKU:
    29-070051
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Product Type:
    Engine Parts
    $38.45
    Qty in Cart: 0
    Price:
    $38.45
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit AC Expansion Valve, Block Style 329403, 329413, 3916182, For Freightliner & Other Models

    BESTfit AC Expansion Valve, Block Style 329403, 329413, 3916182, For Freightliner & Other Models

    BESTFIT TRUCK PARTS

    $28.90
    BESTfit AC Expansion Valve* High Quality AC Expansion Valve* Made Of Aluminum* Block Style* Max Operating Pressure: 0.55+0.035* 4 Superheat* 2 Tonnage* (1) 5/8 x 18 Inlet Port* (1) 7/8 x 14 Inlet...
    29-070047
    SKU:
    29-070047
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $28.90
    Qty in Cart: 0
    Price:
    $28.90
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit AC Expansion Valve For Kenworth & Freightliner

    BESTfit AC Expansion Valve For Kenworth & Freightliner

    BESTFIT TRUCK PARTS

    $25.53
    BESTfit AC Expansion Valve* High Quality Valve* Block Style* Sold Individually* Warranty On A/C Expansion Valves Against Defects In Workmanship & Material From Date Of Purchase** Please Verify OE...
    29-070046
    SKU:
    29-070046
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Kenworth
    Product Type:
    Engine Parts
    $25.53
    Qty in Cart: 0
    Price:
    $25.53
    Subtotal:
  • BESTfit AC Compressor With SD7H15 2 Groove Clutch Replaces F4HT-19D629CA For Ford & Sterling

    BESTfit AC Compressor With SD7H15 2 Groove Clutch Replaces F4HT-19D629CA For Ford & Sterling

    BESTFIT TRUCK PARTS

    $269.99
    BESTfit Air Conditioning Compressor With Clutch 2 Groove* High Quality AC Compressor* SD7H15 Assembly With 2 Groove Clutch* 12 Volt With 3 Wire Connector* Sold Individually* Warranty On A/C...
    29-070044
    SKU:
    29-070044
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Sterling
    Product Type:
    Engine Parts
    $269.99
    Qty in Cart: 0
    Price:
    $269.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit AC Expansion Valve, Block Style For Peterbilt & Kenworth

    BESTfit AC Expansion Valve, Block Style For Peterbilt & Kenworth

    BESTFIT TRUCK PARTS

    $29.88
    BESTfit Block Style AC Expansion Valve* High Quality Valve* Sold Individually* Warranty On Expansion Valve Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...
    29-070042
    SKU:
    29-070042
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    $29.88
    Qty in Cart: 0
    Price:
    $29.88
    Subtotal:
  • BESTfit 13 X 10 X 2.625 Inch AC Evaporator For International & Volvo

    BESTfit 13 X 10 X 2.625 Inch AC Evaporator For International & Volvo

    BESTFIT TRUCK PARTS

    $144.99
    International & Volvo AC Evaporator By BESTfitEnsure consistent and efficient cooling in your International and Volvo trucks with the BESTfit 13 X 10 X 2.625 Inch AC Evaporator. Built to precise 13...
    29-070033
    SKU:
    29-070033
    Truck Class:
    Heavy Duty
    Make:
    Volvo
    Make:
    International
    Product Type:
    Engine Parts
    $144.99
    Qty in Cart: 0
    Price:
    $144.99
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD Red AC Orifice Tube For Peterbilt & Sterling

    TPHD Red AC Orifice Tube For Peterbilt & Sterling

    TPHD

    $1.73
    Orifice Tube Fits Sterling & Peterbilt RedAre you working on an AC project? 4 State Trucks carries an aftermarket, replacement red AC orifice tube that measures 6 x 5 x 3 inches and has a 1-year...
    29-070031
    SKU:
    29-070031
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Sterling
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $1.73
    Qty in Cart: 0
    Price:
    $1.73
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit AC Expansion Valve, Block Style For PACCAR C8OZ19849A, ABPN83308011 For Peterbilt 1970-2002

    BESTfit AC Expansion Valve, Block Style For PACCAR C8OZ19849A, ABPN83308011 For Peterbilt 1970-2002

    BESTFIT TRUCK PARTS

    $18.33
    Peterbilt Air Conditioning EX9404C Expansion ValveMaintain efficient air conditioning performance with the BESTfit Block Style AC Expansion Valve for Peterbilt trucks from 1970-2002. Designed as a...
    29-070022
    SKU:
    29-070022
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    Style Options:
    Paccar
    $18.33
    Qty in Cart: 0
    Price:
    $18.33
    Subtotal:
  • BESTfit 2 Terminal Binary Switch High 270/120, Low 15/40 - Replaces RD5-4640-0

    BESTfit 2 Terminal Binary Switch High 270/120, Low 15/40 - Replaces RD5-4640-0

    BESTFIT TRUCK PARTS

    $125.99
    BESTfit Female Binary Switch For Red Dot Applications With 2 Terminals* High Quality Binary Switch* Metric Fitting Style* Normally Open:  - High: Off 270 PSI, On 120 PSI  - Low: Off 15 PSI, On 40...
    29-070000029
    SKU:
    29-070000029
    Truck Class:
    Heavy Duty
    Make:
    Volvo
    Make:
    Mack
    Product Type:
    Engine Parts
    $125.99
    Qty in Cart: 0
    Price:
    $125.99
    Subtotal:
  • BESTfit AC Expansion Valve, Block Style - Replaces 329-403, RD-5-7015-0M

    BESTfit AC Expansion Valve, Block Style - Replaces 329-403, RD-5-7015-0M

    BESTFIT TRUCK PARTS

    $37.23
    BESTfit Expansion Valve With 2 Ton Rating* High Quality Block Style Expansion Valve* Rating: 2 Ton* Mount Type: Block Type* Mounting Type: Block* Refrigerant Type: R12/R134A* Hose Inlet Size: #6*...
    29-070000020
    SKU:
    29-070000020
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $37.23
    Qty in Cart: 0
    Price:
    $37.23
    Subtotal:
  • BESTfit 12V Preset Thermostatic Switch With 24 Inch Capillary Tube - Replaces A46-3122-30

    BESTfit 12V Preset Thermostatic Switch With 24 Inch Capillary Tube - Replaces A46-3122-30

    BESTFIT TRUCK PARTS

    $59.99
    BESTfit Preset AC Thermostat SwitchThis thermostatic switch is perfect for multi-fit applications, running on 12 volts and replacing OE numbers A46-3122-30. It's compatible with R12 and R134a...
    29-070000015
    SKU:
    29-070000015
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $59.99
    Qty in Cart: 0
    Price:
    $59.99
    Subtotal:
  • Total: items /

Adding your products to cart

Frequently Asked Questions About Heat & AC Parts

How do I know if a heater or AC component will fit my truck?

Heat and AC parts are often specific to the make, model, and year of your truck, as well as the cab configuration. Check the product listing for compatible makes and models before purchasing, and compare part numbers with your existing component whenever possible. If you are unsure, our customer service team can help confirm fitment before you order.

Can I install a heater core, blower motor, or AC component myself, or do I need a professional?

Many components, such as blower motors, resistors, and control switches, can be replaced by drivers or shop technicians comfortable with basic electrical and mechanical work. However, jobs involving the AC refrigerant system, such as compressors, condensers, or evaporators, require certified equipment to safely recover and recharge refrigerant, so these are typically best left to a qualified technician.

What is the difference between OEM and aftermarket heat and AC parts?

OEM parts are made to match the original specifications of your truck and are often priced higher, while aftermarket parts are manufactured by third parties to fit and function similarly, usually at a lower cost. Both can be reliable options, so it often comes down to your budget, the specific part you need, and any preference for original manufacturer branding.

Why is my truck's AC or heater not working as well as it used to?

Reduced heating or cooling performance is commonly caused by issues like a failing blower motor, a clogged heater core, low refrigerant, a worn compressor, or electrical problems with switches and resistors. Diagnosing the exact cause usually requires checking airflow, listening for unusual noises, and inspecting for leaks or worn components before selecting a replacement part.

Do heat and AC parts come with a warranty?

Warranty coverage varies by manufacturer and specific part, so we recommend checking the warranty information listed on each product page before purchasing. If you have questions about a warranty on a specific item, our customer service team is available to help clarify coverage and terms.


Introducing the Official 4 State Trucks Mobile App – Gear Up On the Go!