3564370C91 | Genuine International® / Navistar® R-12 Air Brake Relay Valve

SKU: 3564370C91 MPN: 3564370C91

Master braking control with confidence using the R-12 Air Brake Relay Valve by Genuine International/Navistar. Condition: new. Part number: 3564370C91, compatible with 4200–9900 trucks, ProStar, LoneStar, CE/FE/RE buses and other.

$189.00
No Core Charge
5 in stock, ready to ship

Pickup available at Warehouse - Howard st 7092 ste F

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: 3564370C91

  • Free shipping over $199 Order today — get it
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  • Location icon, warehouse pickup point.
    Pickup available. Usually ready in 24 hours

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 International® / Navistar® Brand International® / Navistar®
Part Number 3564370C91 Part Number 3564370C91
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:

Designed to distribute air within the braking circuit, the Genuine R-12 Air Brake Relay Valve by International/Navistar is supplied in new condition and identified by Part number: 3564370C91. Built with a 2 SUP / 4 DEL (2H + 2V) body configuration and 4 PSI crack pressure, it supports stable airflow distribution through multiple supply and delivery ports for dependable brake system operation.

Why Replacement is Important:

A degraded relay valve may restrict or delay airflow within the pneumatic braking circuit, which can lead to uneven brake response or reduced system reliability.

Impact on Vehicle Performance:

Ensures balanced air distribution, predictable brake engagement, and dependable braking system behavior in severe-service, linehaul, vocational, and medium-duty vehicle applications.

Manufacturer Information:

International® develops commercial truck components engineered for durability and compatibility with heavy-duty vehicle systems.

Navistar® manufactures OEM-grade parts and integrated vehicle technologies designed to support reliable operation across its truck and bus platforms.

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: 3564370C91