374750 | *New* Hydrovac (IHC/GMC Piston Style)

374750 – NEW HYDROVAC (PISTON STYLE)

PART NUMBER(S):

Fleet Products: 374750
OE: 2239520, 2238520, PB-374750-R, Diamond T: N-27269, Ford: D2HZ2005C, 2514918X, 2238520, D7TA2005AB, 2512570X, 3874186

DESCRIPTION:

Model: 374750
Vehicles: Trucks, Trailers, Buses, Tractors
• Type: Piston-style Hydrovac (vacuum-assisted hydraulic braking)
• Diameter: 9-1/2"
• Overall Length: 22"
• 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: Brake booster for medium and heavy-duty applications
• System Fitment: Suited for hydraulic brake systems in industrial trucks, buses, trailers
• Unique Features: Brand new unit, OEM standard build, no core return required

Applications:
This 9-1/2" piston-style hydrovac brake booster delivers reliable vacuum-assisted braking in commercial vehicles. Designed for use in trucks, trailers, tractors, and buses, it features OEM-matched ports and end cap design, and requires no core return. Optimized for easy install and consistent hydraulic output.

CROSS-REFERENCE(S):

600-374750, 374750, 374750X, RV374750X, RV374750X-MD, 6718, 375392, 377042, 378464, HDX RV374750X, MID RV374750X, 2239520, 2238520, N-27269, N27269, 67135R93, 67135R94, 5396-RV374750X, MIDRV374750X, MBIRV374750X, ZZRV374750X, 767653124605, PB-374750-R, PRRH374750X, H374750X, EBN374750X

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:

✔ Match input/output threads (1/2"-20) to existing hydraulic lines
✔ Confirm 1/2" NPT vacuum connection and 3/4" air cleaner fitment
✔ Mounting details not explicitly documented—verify against original unit

WHY CHOOSE FLEET PRODUCTS | KBR - HEAVY DUTY TRUCK & TRAILER PARTS?