Description
374750 - NEW HYDROVAC (PISTON STYLE)
PART NUMBER(S):
Fleet Products: 374750 (New), 374750X (Remanufactured) | Replaces OE: Diamond T N-27269 | Ford D2HZ2005C, D7TA2005AB, 2512570X, 3874186, 2514918X | GMC 2238520 | Navistar (IHC) 67135R94 | Other 375866, 375932, 377042, 378464 | CARDONE 51-8091
DESCRIPTION:
Model: Piston-Style Hydrovac (Single Piston)
Vehicles: IHC and GMC Trucks, Trailers, Buses, Tractors (1957-1986)
• Diameter: 9-1/2"
• Overall Length: 20"
• 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
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):
374750, 374750X, 600-374750, RV374750X, RV374750X-MD, 6718, 375392, 377042, 378464, 2239520, 2238520, N27269, 67135R93, 67135R94, 5396-RV374750X, MIDRV374750X, MBIRV374750X, ZZRV374750X, 767653124605, PB-374750-R, PRRH374750X, H374750X, EBN374750X, 375866, 375932
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 verify against original unit
WHY CHOOSE FLEET PRODUCTS | KBR - HEAVY DUTY TRUCK & TRAILER PARTS?
• Canadian-owned since 1985
• Trusted by fleets, mechanics, and B2B partners across North America
• Fast, Reliable Shipping Across North America
• Competitive pricing with Core Return Refunds
• Price Match Guarantee – Find a better price? We’ll beat the difference by 10%!
Warranty Information
