R955065303X | Genuine Meritor® R-12 Air Brake Relay Valve

SKU: R955065303X MPN: R955065303X

Reliable air brake timing begins with the Genuine New R-12 Air Brake Relay Valve produced by Meritor. Part number: R955065303X, designed for medium duty, severe service, linehaul trucks, vocational applications, and other.

$189.00
No Core Charge

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Product Description

Product Name Air Brake Relay Valve Product Name Air Brake Relay Valve
Model R-12 Model R-12
Condition New Condition New
Brand Meritor® Brand Meritor®
Part Number R955065303X Part Number R955065303X
Part Number R955065303N Part Number R955065303N
Vehicle Compatibility
Severe Service 5900I, 7300, 7400, 7500, 7600, 7700 Severe Service 5900I, 7300, 7400, 7500, 7600, 7700
Medium Duty 4200, 4300, 4400 Medium Duty 4200, 4300, 4400
Premium Conventional 9200, 9400, 9900 Premium Conventional 9200, 9400, 9900
Linehaul ProStar, LoneStar, Linehaul Transport Linehaul ProStar, LoneStar, Linehaul Transport
Heavy Tractors 8500, 8600 Heavy Tractors 8500, 8600
Vocational & Specialty Applications HV (Medium Duty Engines), HV (Heavy Duty Engines), Medium Vocational, Heavy Extreme, Commercial Extreme Transport, Regional Haul Vocational & Specialty Applications HV (Medium Duty Engines), HV (Heavy Duty Engines), Medium Vocational, Heavy Extreme, Commercial Extreme Transport, Regional Haul
Bus Platforms CE 200/300 Series, FE 300, RE 300, IC RE Series, 3200 Bus Chassis, 3300 Bus Chassis, FBC Bus Chassis, Cutaway Commercial Bus Bus Platforms CE 200/300 Series, FE 300, RE 300, IC RE Series, 3200 Bus Chassis, 3300 Bus Chassis, FBC Bus Chassis, Cutaway Commercial Bus
Specification
Crack pressure 4 PSI Crack pressure 4 PSI
Body Configuration 2 SUP / 4 DEL (2H + 2V) Body Configuration 2 SUP / 4 DEL (2H + 2V)
Control / Secondary Service Port 1/4-18 NPT Control / Secondary Service Port 1/4-18 NPT
Delivery Port 1 1/2-14 NPT Delivery Port 1 1/2-14 NPT
Delivery Port 2 1/2-14 NPT Delivery Port 2 1/2-14 NPT
Delivery Port 3 3/8-18 NPT Delivery Port 3 3/8-18 NPT
Delivery Port 4 3/8-18 NPT Delivery Port 4 3/8-18 NPT
Exhaust Port Dust Shield Exhaust Port Dust Shield
Maximum Operating Temperature 200 °F (93 °C) Maximum Operating Temperature 200 °F (93 °C)
Minimum Operating Temperature -40 °F (-40 °C) Minimum Operating Temperature -40 °F (-40 °C)
Mounting M8 x 1.25-6g Stud (2x) Mounting M8 x 1.25-6g Stud (2x)
Mounting Bracket Direction Down Mounting Bracket Direction Down
Mounting Bracket Location Above Cover Mounting Bracket Location Above Cover
Supply Port 1 1/2-14 NPT Supply Port 1 1/2-14 NPT
Supply Port 2 1/2-14 NPT Supply Port 2 1/2-14 NPT
Included Mounting Bracket Included Mounting Bracket

Useful Information

Description and Purpose:

The Genuine R-12 Air Brake Relay Valve by Meritor, available new and carrying Part number: R955065303X, regulates air flow in truck braking systems to ensure balanced pressure and consistent brake timing. Its 2 SUP / 4 DEL (2H + 2V) layout with 4 PSI crack pressure maintains reliable brake response across severe service, medium-duty, linehaul, vocational, and bus vehicle applications. Cross reference: R955065303N

Why Replacement is Important:

Worn or contaminated valves can disrupt air distribution, leading to uneven braking and delayed response. Timely replacement ensures dependable system performance.

Impact on Vehicle Performance:

Maintains precise air flow to brake chambers, supporting stable engagement, smooth operation, and consistent safety across all operating conditions.

Manufacturer Information:

Meritor® produces durable braking, drivetrain, and mobility solutions for commercial trucks and buses, emphasizing reliability, safety, and performance in demanding transport environments.

Tags & Category: Air Brake Relay Valve, R-12 Relay Valve, Pneumatic Brake Valve, Truck Brake Valve, Air Pressure Valve, Brake Control Valve, Truck Air System, Relay Valve Component

Warranty:

Parts Finder Q offers a 365-days warranty for all types of parts in any condition. The warranty applies exclusively to purchases made directly through our website (partsfinderq.com). Please note that purchases made through third-party platforms like eBay or Amazon are not covered by this warranty.

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  • Icon Truck, Fast Delivery
    Free shipping over $199 Place an order today and receive it on Mar 6
  • Clock Icon
    Orders placed before 7-PM EST will ship same business day
  • Location icon, warehouse pickup point.
    Pickup available usually ready in 24 hours
  • Need it fast? We offer overnight shipping

    Contact us to check if overnight next-day delivery is available for your order - PN: R955065303X