Description
065677-G CHECK VALVE (SC-PR, AD-SP AIR DRYER)
PART NUMBER(S):
Fleet Products: 065677-G (New) | OE: Bendix 065677, S4341003100, 5000148X
DESCRIPTION:
Model: SC-PR Single Check Protection Valve (for AD-SP)
Vehicles: Freightliner Cascadia, Century, Columbia, Coronado, FLD112/120, Volvo VNL/VNM, International, Mack - with Bendix AD-SP or SS1200 Air Dryers
• Ports: 1/2" NPT delivery and supply
• Function: Combines single check and pressure protection in one assembly
• Prevents backflow and maintains reservoir pressure
• Required inline valve when installing AD-SP air dryers
• Mounts directly to service reservoir, with cast port IDs for orientation
• Construction: Aluminum body, serviceable design
Applications:
Is this valve required for your AD-SP install? Yes, engineered as the mandatory check valve for Bendix AD-SP air dryers, the 065677-G protects the front axle reservoir while enabling proper purge/regeneration. Compatible with medium- and heavy-duty commercial trucks and buses using Bendix AD-SP or SS1200 air dryers.
CROSS-REFERENCE(S):
065677, 060-065677, 065677BXW, 65677, 1189307, 3516-883-C1, 5000105, 5000148, 5003730, 5000588, 5003168, 5003225, 5004825, 5006638, S4341003100, BW065677, BW0656771, AV065677, TLA65677, R955065677N, DAY-AV065677, 745065677, AM170S4341003100, AT1003100, TR065677, WA13103100, ZAC065677, 8023178, G1200156, KS03100, S-15333
A cross-reference listing means this part is a suitable replacement for the part numbers listed. Please confirm all port sizes and installation requirements match your system before installing.
IMPORTANT INSTALLATION NOTES:
✔ Install inline at the secondary (front axle) service reservoir per Bendix AD-SP plumbing diagram
✔ Observe flow direction, check arrow/cast markings must face from reservoir toward dryer purge circuit
✔ Use thread sealant rated for air brake service; torque per OEM specifications
✔ After installation, perform a full purge/regeneration test to confirm proper function
✔ Always confirm port size (1/2" NPT) matches vehicle air system before installation
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Warranty Information
