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  • Freightliner
    • Freightliner Models
    • Cascadia
    • Century
    • Classic
    • Columbia
    • Coronado
    • M2 Buisness Class
    • FLB
    • FLD
    Freightliner Bestseller
    Freightliner FLD Headlight Turn Signal Assembly & Bezel
    Freightliner FLD Headlight Turn Signal Assembly & Bezel

    Freightliner FLD Headlight Turn Signal Assembly...

    $60.29 $55.27
    Chrome Hood Mirror For Freightliner Cascadia - A22-66565-002 A22-66565-003
    Chrome Hood Mirror For Freightliner Cascadia - A22-66565-002 A22-66565-003

    Freightliner Cascadia Hood Mirror

    Replace: A22-66565-002, A22-66565-003

    ...
    $96.64 $41.85
  • Kenworth
    • Kenworth Models
    • Kenworth W900
    • Kenworth T800
    • Kenworth T680
    • Kenworth T880
    • Kenworth T300
    • Kenworth T600
    • Kenworth T660
    • Kenworth T700
    • Kenworth T170
    • Kenworth T2000
    • Kenworth K100
    Kenworth Bestsellers
    Kenworth T2000 Corner Light
    Kenworth T2000 Corner Light

    Kenworth T2000 Corner Light

    Replaces: P54-1019-4

    ...
    $18.73
    Kenworth T660/T700 Projector Headlights 2008-16
    Kenworth T660/T700 Projector Headlights 2008-16
    Headlights fitment models:  Kenworth T660/T700 Projector...
    $159.05 $110.98
    Bushing, Steering Shaft For Kenworth - (R131014)
    Bushing, Steering Shaft For Kenworth - (R131014)

    Notes: Kenworth Trucks

    Crossref: R131014

    $42.85
  • Peterbilt
    • Peterbilt Models
    • Peterbilt 389
    • Peterbilt 388
    • Peterbilt 380
    • Peterbilt 379
    • Peterbilt 370
    Peterbilt Bestseller
    Peterbilt 388 & 389 Headlights
    Peterbilt 388 & 389 Headlights

    Headlights fitment models:  Peterbilt 388 389...

    $221.05 $170.95
    Cabin Mount Bushing For Peterbilt 357/365/378/379/385/389 - (2008257)
    Cabin Mount Bushing For Peterbilt 357/365/378/379/385/389 - (2008257)

    Notes: Peterbilt 357, 365, 378, 379,...

    $7.66
  • International
    • International models
    • International ProStar
    • International DuraStar
    • International PayStar
    • International 9900I
    • International IHC
    International Bestseller
    Chrome Hood Mirror For International Prostar - 3594843C3, 3594844C3
    Chrome Hood Mirror For International Prostar - 3594843C3, 3594844C3

    International Prostar Hood Mirror

    Replace:  3594843C3, 3594844C3

    ...
    $83.41 $54.99
    Kit Hood Latch For International Prostar - (3544924C1)
    Kit Hood Latch For International Prostar - (3544924C1)

    Notes: Navistar International 4100/4200/4300/4400/7300/7400/7500/7600/8500, Prostar Linehaul...

    $52.52
  • Volvo
    • Volvo Models
    • Volvo VHD
    • Volvo VNL
    • Volvo VNM
    • Volvo VNR
    • Volvo VNX
    • Volvo VM
    • Volvo FL
    • Volvo FE
    • Volvo FM
    • Volvo FH
    • Volvo FH16
    • Volvo FMX
    Volvo Bestseller
    Cabin Mount Bushing For Volvo VBN/VN - 8074666, M203054
    Cabin Mount Bushing For Volvo VBN/VN - 8074666, M203054

    Notes: Volvo VBN, VN Series Trucks

    ...
    $39.08
    Hood Mirror For Volvo Vn Vnl with Mounting Plates - 82361058 82361059
    Hood Mirror For Volvo Vn Vnl with Mounting Plates - 82361058 82361059
    • Vehicle Fitment -2004-2016 
    • The Best...
    $96.87 $69.98
    Volvo VNL Chrome Housing Headlight
    Volvo VNL Chrome Housing Headlight


    • Fits Volvo VN/VNL models...
    $235.95 $185.98
  • Mack
    • Mack Models
    • Mack F Series
    • Mack R Series
    • Mack U Series
    • Mack B Series
    • Mack CH Series
    • Mack CL Series
    • Mack CV Series
    • Mack CX Series
    • Mack DM Series
    • Mack CHN Series
    • Mack CXN Series
    • Mack GU Series
    • Mack Granite
    • Mack Vision
    Mack Bestseller
    Hood Hinge Bush Assembly For Mack CH - (M24414)
    Hood Hinge Bush Assembly For Mack CH - (M24414)

    Notes: Mack CH and CNX Series...

    $17.71
    Mack Power Steering Pump - 38QC367P6
    Mack Power Steering Pump - 38QC367P6

     FORTPRO - POWER STEERING PUMP

      ...
    $174.53 $159.99
    Cabin Mount Assembly For Mack CH - (30QS3373M)
    Cabin Mount Assembly For Mack CH - (30QS3373M)

    Notes: Mack CH Series Trucks

    Crossref:...

    $65.29
  1. Home
    2. ›
  2. Brakes
    3. ›
  3. Brake Valves
    4. ›
  4. Safety Valves
    5. › ST-4 Safety Valve. 3/8” P.T.
    ST-4 Safety Valve. 3/8” P.T.
    ST-4 Safety Valve. 3/8” P.T.

    ST-4 Safety Valve. 3/8” P.T.

    • Vendor: Fortpro
    • Product Code: F224601
    • Availability: In Stock
    $13.62
    Crossref: 131081 Notes: 3/8” P.T. 250 Psig Cracking Pressure
    • Print
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    • Reviews

    Crossref: 131081

    Notes: 3/8” P.T. 250 Psig Cracking Pressure

    Related Product

    276793 TC-2 Control Trailer Valve 276793 TC-2 Control Trailer Valve

    276793 TC-2 Control Trailer Valve

    $46.01
    Crossref: 276793, 20QE351AP3 Notes: All Ports 1/4” P.T. Repair Kit: FortProUSA#: F224647. Replaces: 276122
    A 1000S Emergency Relay Valve A 1000S Emergency Relay Valve

    A 1000S Emergency Relay Valve

    $58.07
    Crossref: A1000S Notes: Supply Port (1) 1/2” P.T. Delivery Ports (4) 1/4” P.T. Control Port (2) 1/4” P.T. Emergency Supply...
    Adjustable Linkage - 48100225 Adjustable Linkage - 48100225

    Adjustable Linkage - 48100225

    $8.95
    A common trailer suspension linkage used by , several OE manufacturers., Linkage can be cut to obtain desired linkage length....
    Adjustable Linkage - 48100367

    Adjustable Linkage - 48100367

    $4.59
    Crossref: 48100367
    Air Control D-2 Governor replace Bendix 27549 Air Control D-2 Governor replace Bendix 27549

    Air Control D-2 Governor replace Bendix 27549

    $8.96 $12.95
    This should fit all trucks equipped with air systems. This is a replacement part for Bendix #275491 and Midland #18530....
    Auxiliary Lift Axle Valve

    Auxiliary Lift Axle Valve

    $14.52
    Crossref: 90054079
    BP-R1 Relay Valve BP-R1 Relay Valve

    BP-R1 Relay Valve

    $36.62
    Crossref: 065146 Notes: Delivery Ports (2) 1/2” , (2) 3/8” P.T. Supply Port (1) 1/2” P.T. Control Port (1) 1/8”...
    DC-4 Double Check Valve. 3/4 inch MP 1/4 inch 3/8 inch FM DC-4 Double Check Valve. 3/4 inch MP 1/4 inch 3/8 inch FM

    DC-4 Double Check Valve. 3/4" MP 1/4" 3/8" FM

    $13.36
    Crossref: 289296, KN25080, 20QE2199, 278598 Notes: Male Port (1) 3/8” P.T. Female Ports (1) 1/4” P.T., (2) 3/8” P.T.
    DC-4 Double Check Valve. All Ports 3/8 inch DC-4 Double Check Valve. All Ports 3/8 inch

    DC-4 Double Check Valve. All Ports 3/8"

    $10.85
    Crossref: 278614, 283321, KN25060, 20QE2222R, 20QE283R, 764368C92 Notes: All Ports 3/8” P.T.
MAXITRUCKS is an e-commerce store specialize in truck and trailer parts. We are committed to offering the best quality parts at very competitive prices, for the satisfaction and trust of our customers. We serve customers nationwide.

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  Email: admin@maxitrucks.com

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  • Freightliner
    • Freightliner Models
    • Cascadia
    • Century
    • Classic
    • Columbia
    • Coronado
    • M2 Buisness Class
    • FLB
    • FLD
    Freightliner Bestseller
    Freightliner FLD Headlight Turn Signal Assembly & Bezel
    Freightliner FLD Headlight Turn Signal Assembly & Bezel

    Freightliner FLD Headlight Turn Signal Assembly...

    $60.29 $55.27
    Chrome Hood Mirror For Freightliner Cascadia - A22-66565-002 A22-66565-003
    Chrome Hood Mirror For Freightliner Cascadia - A22-66565-002 A22-66565-003

    Freightliner Cascadia Hood Mirror

    Replace: A22-66565-002, A22-66565-003

    ...
    $96.64 $41.85
  • Kenworth
    • Kenworth Models
    • Kenworth W900
    • Kenworth T800
    • Kenworth T680
    • Kenworth T880
    • Kenworth T300
    • Kenworth T600
    • Kenworth T660
    • Kenworth T700
    • Kenworth T170
    • Kenworth T2000
    • Kenworth K100
    Kenworth Bestsellers
    Kenworth T2000 Corner Light
    Kenworth T2000 Corner Light

    Kenworth T2000 Corner Light

    Replaces: P54-1019-4

    ...
    $18.73
    Kenworth T660/T700 Projector Headlights 2008-16
    Kenworth T660/T700 Projector Headlights 2008-16
    Headlights fitment models:  Kenworth T660/T700 Projector...
    $159.05 $110.98
    Bushing, Steering Shaft For Kenworth - (R131014)
    Bushing, Steering Shaft For Kenworth - (R131014)

    Notes: Kenworth Trucks

    Crossref: R131014

    $42.85
  • Peterbilt
    • Peterbilt Models
    • Peterbilt 389
    • Peterbilt 388
    • Peterbilt 380
    • Peterbilt 379
    • Peterbilt 370
    Peterbilt Bestseller
    Peterbilt 388 & 389 Headlights
    Peterbilt 388 & 389 Headlights

    Headlights fitment models:  Peterbilt 388 389...

    $221.05 $170.95
    Cabin Mount Bushing For Peterbilt 357/365/378/379/385/389 - (2008257)
    Cabin Mount Bushing For Peterbilt 357/365/378/379/385/389 - (2008257)

    Notes: Peterbilt 357, 365, 378, 379,...

    $7.66
  • International
    • International models
    • International ProStar
    • International DuraStar
    • International PayStar
    • International 9900I
    • International IHC
    International Bestseller
    Chrome Hood Mirror For International Prostar - 3594843C3, 3594844C3
    Chrome Hood Mirror For International Prostar - 3594843C3, 3594844C3

    International Prostar Hood Mirror

    Replace:  3594843C3, 3594844C3

    ...
    $83.41 $54.99
    Kit Hood Latch For International Prostar - (3544924C1)
    Kit Hood Latch For International Prostar - (3544924C1)

    Notes: Navistar International 4100/4200/4300/4400/7300/7400/7500/7600/8500, Prostar Linehaul...

    $52.52
  • Volvo
    • Volvo Models
    • Volvo VHD
    • Volvo VNL
    • Volvo VNM
    • Volvo VNR
    • Volvo VNX
    • Volvo VM
    • Volvo FL
    • Volvo FE
    • Volvo FM
    • Volvo FH
    • Volvo FH16
    • Volvo FMX
    Volvo Bestseller
    Cabin Mount Bushing For Volvo VBN/VN - 8074666, M203054
    Cabin Mount Bushing For Volvo VBN/VN - 8074666, M203054

    Notes: Volvo VBN, VN Series Trucks

    ...
    $39.08
    Hood Mirror For Volvo Vn Vnl with Mounting Plates - 82361058 82361059
    Hood Mirror For Volvo Vn Vnl with Mounting Plates - 82361058 82361059
    • Vehicle Fitment -2004-2016 
    • The Best...
    $96.87 $69.98
    Volvo VNL Chrome Housing Headlight
    Volvo VNL Chrome Housing Headlight


    • Fits Volvo VN/VNL models...
    $235.95 $185.98
  • Mack
    • Mack Models
    • Mack F Series
    • Mack R Series
    • Mack U Series
    • Mack B Series
    • Mack CH Series
    • Mack CL Series
    • Mack CV Series
    • Mack CX Series
    • Mack DM Series
    • Mack CHN Series
    • Mack CXN Series
    • Mack GU Series
    • Mack Granite
    • Mack Vision
    Mack Bestseller
    Hood Hinge Bush Assembly For Mack CH - (M24414)
    Hood Hinge Bush Assembly For Mack CH - (M24414)

    Notes: Mack CH and CNX Series...

    $17.71
    Mack Power Steering Pump - 38QC367P6
    Mack Power Steering Pump - 38QC367P6

     FORTPRO - POWER STEERING PUMP

      ...
    $174.53 $159.99
    Cabin Mount Assembly For Mack CH - (30QS3373M)
    Cabin Mount Assembly For Mack CH - (30QS3373M)

    Notes: Mack CH Series Trucks

    Crossref:...

    $65.29