Description
18005544 – DELCO HY-POWER FLOW SWITCH (501830C91)
PART NUMBER(S):
Fleet Products: 18005544 (New) | OE: Delco 501830C91, Haldex RV20001K, 501830C91, DEL58002912
DESCRIPTION:
Model: Delco Hy-Power Flow Switch – OEM Replacement (New)
Vehicles: Navistar IHC (1973–1983), GMC/Chevrolet medium-duty trucks (1977–1987), GM and IHC buses equipped with Delco Hy-Power hydraulic brake systems
• New flow switch for Delco Hy-Power brake booster units
• Designed for units 6700411L/M, 6700412L/M, 6700413L/M, 6700240H/B
• OEM #501830C91 – replaces Navistar/International 501830C91, AC Delco 18005544, and Haldex RV20001K
• Provides correct fluid flow monitoring to ensure proper brake booster function
• Sold new – no core charge or remanufacturing required
Applications: Is this the right flow switch for your hydraulic brake system✔ Yes—engineered for Delco Hy-Power boosters used in IHC trucks (1973–1983) and GM/GMC medium-duty platforms (1977–1987). Ensures reliable operation of 18001810, 18003998, and 18001047 Hy-Power booster assemblies.
Used on Delco Hy-Power booster assemblies 18001810, 18003998, and 18001047
CROSS-REFERENCE(S):
18005544, 501830C91, 600-501830C91, RV20001K, 5396-RV20001K, HDXRV20001K, ZZRV20001KM1D, 767653166988, MIDRV20001K
A cross-reference listing means this part is a suitable replacement for the part numbers listed. Please confirm all ports and dimensions match your application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Verify compatibility with Delco Hy-Power units (6700411L/M, 6700412L/M, 6700413L/M, 6700240H/B) before install
✔ Used specifically on Hy-Power booster assemblies (18001810, 18003998, 18001047)
✔ Install with proper sealing to prevent fluid leaks and ensure accurate flow detection
✔ Use only DOT 3 or DOT 4 brake fluid in connected hydraulic brake systems
✔ New part – does not require core return
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Warranty Information
