Description
374980 – NEW HYDROVAC (PISTON STYLE)
PART NUMBER(S):
Fleet Products: 374980, OE: 2241895, RV2509426X, Ford: D0HA2005B, 2508117X, TJAW2005SA, D2TA2005EC, 2512138X, 2255816, D7TH2005CA, 2512140X, 3874189
DESCRIPTION:
Model: 374980
Vehicles: International Harvester CO180 (1956–1957), General Trucks, Trailers, Buses, Tractors
• Type: Piston-style Hydrovac (vacuum-assisted hydraulic braking)
• Diameter: 9-1/2"
• Overall Length: 17-5/16"
• Input Port: 1/2" - 20 Thread
• Output Port: 1/2" - 20 Thread
• Air Cleaner Port: 3/4"
• Vacuum Supply Port: 1/2" NPT
• End Cap: B
• Actuation Type: Single piston, vacuum-assisted
• Function: Hydrovac brake booster for single circuit brake systems
• System Fitment: Compatible with heavy-duty hydraulic brake systems on commercial vehicles
• Unique Features: New, no core required, built to OEM specs for pressure and vacuum operation
• Engine Compatibility: CO180 series – 4.4L L6 Gas (269 cu. in.), 4.6L L6 Gas (282 cu. in.), 5.0L L6 Gas (308 cu. in.)
Applications:
This 9-1/2" diameter, 17-5/16" piston-style Hydrovac is engineered for heavy-duty commercial platforms including tractors, trailers, and medium-duty trucks. New production with no core charge, ideal for single circuit systems requiring consistent hydraulic boost in vacuum-assisted braking systems.
CROSS-REFERENCE(S):
374980, 374980X, RV374980X, PV-374980, 600-374980, RV374980X-MD, 373853, 375698, 377215, 51-8056, HDX RV374980X, MID RV374980X, 5396-RV374980X, MIDRV374980X, MBIRV374980X, ZZRV374980X, 767653094762, 2241895, RV2509426X, PB-374980-R
A cross-reference listing means this part is functionally interchangeable with the given numbers but may differ in brand, appearance, or cost.
IMPORTANT INSTALLATION NOTES:
✔ Ensure input/output ports match existing brake system threads (1/2"-20)
✔ Verify vacuum and air cleaner port orientation for optimal function
✔ Designed for OEM-equivalent pressure and vacuum system integration
✔ Refer to CO180 model year specs for proper piston Hydrovac configuration
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Warranty Information
