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International WorkStar Air Springs & Level Valves

Discover a range of air springs and level valves tailored for International WorkStar trucks. These components enhance your vehicle's suspension for smoother rides and better handling. Whether you need replacements or upgrades, these parts offer the performance and reliability for heavy-duty use. Find your perfect fit at 4 State Trucks for your International WorkStar.
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  • Air Spring Rolling Lobe With Plastic Base Replaces 69133, 1R10-101, W01-358-5770, 1003535770C

    Air Spring Rolling Lobe With Plastic Base Replaces 69133, 1R10-101, W01-358-5770, 1003535770C

    AFTERMARKET

    $218.99
    Replacement Ridewell Watson and Chalin Air Spring Rolling Lobe* High Quality Air Spring* Rolling Lobe Type* Plastic Bottom Plate* With Bumper* Dimensions:  - 4.20 Inch Minimum Height  - 11.40 Inch...
    29-05100044
    SKU:
    29-05100044
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Style Options:
    Rolling Lobe
    Height Options:
    4 Inch
    Make:
    Trailer
    Diameter Options:
    11 Inch
    $218.99
    Qty in Cart: 0
    Price:
    $218.99
    Subtotal:
  • Parking Valve W/ 2 Way Check Valve 401029

    Parking Valve W/ 2 Way Check Valve 401029

    AFTERMARKET

    $71.99
    Tractor Trailer Park Valve W/2-Way Check ValveThe Parking Valve with a Two-Way Check Valve is used in air brake systems for heavy-duty vehicles. It has a 1/4 inch NPT inlet for connecting air lines,...
    09-05170058
    SKU:
    09-05170058
    Product Type:
    Frame & Chassis
    Truck Class:
    Universal
    Make:
    Universal Items
    $71.99
    Qty in Cart: 0
    Price:
    $71.99
    Subtotal:
  • Parking Valve W/ 2 Way Check Valve 401084

    Parking Valve W/ 2 Way Check Valve 401084

    AFTERMARKET

    $71.99
    Parking Valve W/2 Way Check ValveThe parking valve with a 2-way check valve lets you use either the primary or secondary air supply to operate the spring brakes on your tractor and trailer...
    09-05170056
    SKU:
    09-05170056
    Product Type:
    Frame & Chassis
    Truck Class:
    Universal
    Make:
    Universal Items
    $71.99
    Qty in Cart: 0
    Price:
    $71.99
    Subtotal:
  • Air Spring Rolling Lobe 6360

    Air Spring Rolling Lobe 6360

    AFTERMARKET

    $225.99
    Trailer Air Spring Rolling Lobe* High Quality Air Spring* Rolling Lobe Type* 5700 Load At 80 PSI* 7200 Load At 100 PSI* 81 CPM Natural Frequency* Plastic Bottom Plate* With Bumper* Dimensions:  - 7...
    29-05100017
    SKU:
    29-05100017
    Product Type:
    Frame & Chassis
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Style Options:
    Rolling Lobe
    Height Options:
    12 1/2 Inch
    Diameter Options:
    12 1/2 Inch
    Make:
    Trailer
    $225.99
    Qty in Cart: 0
    Price:
    $225.99
    Subtotal:
  • Air Spring Rolling Lobe Replaces 9033, 1R12-351, 64430, 90044198, 90557012

    Air Spring Rolling Lobe Replaces 9033, 1R12-351, 64430, 90044198, 90557012

    AFTERMARKET

    $170.99
    Replacement Air Spring Rolling Lobe* High Quality Air Spring* Rolling Lobe Type* 5700 Load At 80 PSI* 7200 Load At 100 PSI* 81 CPM Natural Frequency* Plastic Bottom Plate* With Bumper* Dimensions:  -...
    29-05100039
    SKU:
    29-05100039
    Product Type:
    Frame & Chassis
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Diameter Options:
    9 Inch
    Height Options:
    12 1/2 Inch
    Style Options:
    Rolling Lobe
    $170.99
    Qty in Cart: 0
    Price:
    $170.99
    Subtotal:
  • Air Spring Rolling Lobe Replaces 9031, 1R12-350, 64433

    Air Spring Rolling Lobe Replaces 9031, 1R12-350, 64433

    AFTERMARKET

    $214.99
    Replacement Air Spring Rolling Lobe* High Quality Air Spring* Rolling Lobe Type* 5700 Load At 80 PSI* 7200 Load At 100 PSI* 81 CPM Natural Frequency* Plastic Bottom Plate* With Bumper* Dimensions:  -...
    29-05100040
    SKU:
    29-05100040
    Product Type:
    Frame & Chassis
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Height Options:
    7 Inch
    Style Options:
    Rolling Lobe
    Diameter Options:
    9 Inch
    Make:
    Trailer
    $214.99
    Qty in Cart: 0
    Price:
    $214.99
    Subtotal:
  • Air Spring Rolling Lobe Replaces OE 68617. 9 9K-12 P 100, 8959, W01-358-8959

    Air Spring Rolling Lobe Replaces OE 68617. 9 9K-12 P 100, 8959, W01-358-8959

    AFTERMARKET

    $266.99
    Heavy Duty Semi Truck Air Spring* High Quality Air Spring* Rolling Lobe Type* 5000 Load At 80 PSI* 6250 Load At 100 PSI* Plastic Bottom Plate* With Bumper* Dimensions:  - 10.00 Inch Design Height  -...
    29-0510023
    SKU:
    29-0510023
    Product Type:
    Frame & Chassis
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Style Options:
    Rolling Lobe
    Height Options:
    15 1/2 Inch
    Make:
    Trailer
    $266.99
    Qty in Cart: 0
    Price:
    $266.99
    Subtotal:
  • Air Spring Single Convoluted SP1B150

    Air Spring Single Convoluted SP1B150

    AFTERMARKET

    $504.99
    Firestone Airide Single Convoluted Air Spring* High Quality Air Spring* Single Convoluted* Dimensions:  - 2.99 Inch Minimum Height  - 5.90 Inch Maximum Height* Top Plate:  - (3) Stud Holes  - 6.30...
    29-05100001
    SKU:
    29-05100001
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $504.99
    Qty in Cart: 0
    Price:
    $504.99
    Subtotal:
  • Air Spring Rolling Lobe 1DK23F

    Air Spring Rolling Lobe 1DK23F

    AFTERMARKET

    $237.99
    Trailer Air Spring Rolling Lobe* High Quality Air Spring* Rolling Lobe Type* 5500 Load At 80 PSI* 7000 Load At 100 PSI* 81 CPM Natural Frequency* Plastic Bottom Plate* With Bumper* Dimensions:  - 7...
    29-05100018
    SKU:
    29-05100018
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Height Options:
    13 1/2 Inch
    Style Options:
    Rolling Lobe
    $237.99
    Qty in Cart: 0
    Price:
    $237.99
    Subtotal:
  • Air Spring Rolling Lobe With Plastic Base - 9643, 69658, 58995002 For Hendrickson

    Air Spring Rolling Lobe With Plastic Base - 9643, 69658, 58995002 For Hendrickson

    AFTERMARKET

    $285.99
    Hendrickson Rolling Lobe Air SpringExperience a smooth ride with the Rolling Lobe Air Spring With Plastic Base. Engineered to keep trucks moving smoothly, it minimizes vibration and maintains ride...
    29-05100238
    SKU:
    29-05100238
    Material Options:
    Plastic/Poly
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $285.99
    Qty in Cart: 0
    Price:
    $285.99
    Subtotal:
  • Paralift Beam Assembly For Hendrickson

    Paralift Beam Assembly For Hendrickson

    AFTERMARKET

    $506.99
    Choose Option(s) to see description.Paralift Beam Assembly - Replaces D147841 For HendricksonHendrickson Beam Assembly For Driver Side Inboard or Passenger Outboard* High Quality Beam Assembly*...
    PPR_298967
    SKU:
    PPR_298967
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $506.99
    Qty in Cart: 0
    Price:
    $506.99
    Subtotal:
  • Gabriel Shock Mounting Bushing For 2.39 Inch OD Eye Ring

    Gabriel Shock Mounting Bushing For 2.39 Inch OD Eye Ring

    GABRIEL

    $3.29
    Urethane Bushing For Mounting Gabriel Shock* High Quality Mounting Accessory* 1.859 Inch * Urethane Bushing* Sold Individually* Warranty On Mounting Accessories Against Defects In Workmanship &...
    09-05000000
    SKU:
    09-05000000
    Diameter Options:
    1 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $3.29
    Qty in Cart: 0
    Price:
    $3.29
    Subtotal:
  • Axle Connection Kit - SRK-03 For Watson & Chalin

    Axle Connection Kit - SRK-03 For Watson & Chalin

    AFTERMARKET

    $302.99
    Single Wheel Axle Connect Kit Replaces SRK-03* High Quality Axle Connection Kit* Consists Of  - (2) Cap Screw 1-1/8 In X 8-1/2 In  - (2) Lock Nut 1-1/8 In  - (4) U Bolt Washer 1-1/8 In - (2) Pivot...
    29-05090017
    SKU:
    29-05090017
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $302.99
    Qty in Cart: 0
    Price:
    $302.99
    Subtotal:
  • 1-5/16 Inch ID -12 TPI Nut For 9541 & 9547 Air Springs

    1-5/16 Inch ID -12 TPI Nut For 9541 & 9547 Air Springs

    AUTOMANN USA

    $16.52
    1 1/2 OD, 1-5/16 ID Air Spring NutStrengthen your air spring assemblies with this 1-5/16 Inch ID -12 TPI Nut, designed for 9541 and 9547 air springs. With a 1.5-inch outer diameter and 0.925-inch...
    09-05250073
    SKU:
    09-05250073
    Truck Class:
    Universal
    Material Options:
    Brass
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $16.52
    Qty in Cart: 0
    Price:
    $16.52
    Subtotal:
  • Spacer Washer, 3 Inch ID

    Spacer Washer, 3 Inch ID

    AUTOMANN USA

    $13.87
    Spacer Washer Bushing For Rear Drive Air* High Quality Spacer Washer* Dimensions:  - 4.225 Inch O.D.  - 3.000 Inch I.D.  - 0.306 Inch Thickness* Sold Individually* Warranty On Spacer Washers Against...
    29-05250044
    SKU:
    29-05250044
    Diameter Options:
    3 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $13.87
    Qty in Cart: 0
    Price:
    $13.87
    Subtotal:
  • Load-Share Single Side Air Bag Replacement Kit for 4 Inch Round Top U Bolt & Double Convolute

    Load-Share Single Side Air Bag Replacement Kit for 4 Inch Round Top U Bolt & Double Convolute

    LOAD-SHARE SUSPENSIONS

    $585.99
    Single Side Air Bag Replacement Kit for 4 Inch Round Top U Bolt & Double Convolute* High Quality Air Bag Replacement Kit* Single Side * Replacement Kit For 4 Inch Round Top U Bolt* Sold Individually*...
    29-051013
    SKU:
    29-051013
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $585.99
    Qty in Cart: 0
    Price:
    $585.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Air Bag For Steer Axle Kit-Replaces W01-358-6926

    Air Bag For Steer Axle Kit-Replaces W01-358-6926

    AUTOMANN USA

    $146.99
    Double Convoluted Air BagUpgrade your vehicle's steer axle system with this premium Air Bag, designed to replace OEM W01-358-6926. Featuring a double convoluted design, it delivers exceptional load...
    29-051006
    SKU:
    29-051006
    Truck Class:
    Heavy Duty
    Style Options:
    Double Convolute
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $146.99
    Qty in Cart: 0
    Price:
    $146.99
    Subtotal:
  • BESTfit Air Spring Rolling Lobe - 716111

    BESTfit Air Spring Rolling Lobe - 716111

    BESTFIT TRUCK PARTS

    $203.99
    BESTfit Replacement Air Spring Rolling Lobe* High Quality Air Spring* Rolling Lobe Type* 2600 Load At 80 PSI* 3300 Load At 100 PSI* 80 CPM Natural Frequency* Steel Bottom Plate* Without Bumper*...
    29-0510020
    SKU:
    29-0510020
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Style Options:
    Rolling Lobe
    Height Options:
    10 Inch
    Material Options:
    Steel
    $203.99
    Qty in Cart: 0
    Price:
    $203.99
    Subtotal:
  • Load-Share Bottom Mounting Bracket For Double Side 2 Air Springs Per Side

    Load-Share Bottom Mounting Bracket For Double Side 2 Air Springs Per Side

    LOAD-SHARE SUSPENSIONS

    $137.99
    Bottom Mounting Bracket* High Quality Mounting Bracket* For Double Side   - (2) Air Springs Per Side* Sold Individually* Warranty On Mounting Brackets Against Defects In Workmanship & Material From...
    29-050975
    SKU:
    29-050975
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $137.99
    Qty in Cart: 0
    Price:
    $137.99
    Subtotal:
  • Load-Share Single Side Air Bag With Controller And Bracket

    Load-Share Single Side Air Bag With Controller And Bracket

    LOAD-SHARE SUSPENSIONS

    $495.99
    Single Side Air Bag With Controller And Bracket* High Quality Air Bag* Single Side * With Controller And Bracket* Sold Individually* Warranty On Air Bags Against Defects In Workmanship & Material...
    29-050960
    SKU:
    29-050960
    Truck Class:
    Heavy Duty
    Material Options:
    Rubber
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $495.99
    Qty in Cart: 0
    Price:
    $495.99
    Subtotal:
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Adding your products to cart

Explore a wide selection of air springs, level valves, and suspension components for your International WorkStar truck. From airbags and leveling valves to mounting hardware and accessories, you'll find everything needed to maintain and upgrade your suspension. Whether replacing worn parts or improving performance, these durable components are built for the demands of commercial trucking, ensuring optimal comfort, stability, and load-bearing capacity.

Frequently Asked Questions About International WorkStar Air Springs & Level Valves

What do air springs and level valves actually do on my International WorkStar?

Air springs support the weight of the cab or suspension and provide a cushioned ride by adjusting air pressure as load changes. The level valve works with the air springs to automatically regulate air pressure, keeping the vehicle riding at a consistent height regardless of load. Together, these components help maintain ride quality, stability, and proper axle alignment.

How do I know if my air spring or level valve needs to be replaced?

Common signs include a sagging cab or chassis, an uneven ride height from side to side, a rough or bouncy ride, visible cracks or bulges in the air spring bellows, or audible air leaks near the suspension or cab mounts. If you notice the truck settling lower over time or leaning to one side, the level valve linkage or the air spring itself may be worn out.

Will these air springs and level valves fit my specific WorkStar model and year?

Fitment can vary by model year, cab configuration, and whether the part is for the cab suspension or chassis suspension. Always check the listed part number and specifications against your truck's VIN or existing OEM part number before ordering. If you are unsure, our team can help confirm fitment based on your truck's details.

Can I install a replacement air spring or level valve myself?

Many experienced DIY mechanics and fleet technicians replace these parts themselves, but the job typically involves working with the truck's air system, so a basic understanding of air brake and suspension systems is helpful. You will need to safely support the vehicle, relieve system air pressure, and properly reconnect and adjust the level valve linkage afterward. If you are not comfortable working around air systems, having a qualified technician handle the installation is recommended.

Are these air springs and level valves OEM or aftermarket, and what is the quality difference?

Our catalog includes both OEM and quality aftermarket options. OEM parts are built to match the original manufacturer's exact specifications, while aftermarket parts are manufactured to fit and function similarly, often at a lower cost. Each product listing notes whether the part is OEM or aftermarket so you can choose based on your budget and preference for original equipment matching.


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