Product Description
2500660X - SINGLE PISTON HYDROVAC
PART NUMBER(S):
Fleet Products: 2500660X, 2500660 | OE: 2500660 | CARDONE: 51-8002
DESCRIPTION:
Model: Single Piston Hydrovac Brake Booster, Third Series, Single Diaphragm
Vehicles: Heavy-duty trucks and equipment, including Chevrolet medium-duty trucks (1974, 1962 C60, 1973 C60, 1987 1-ton), Dodge medium trucks and RVs, International Harvester farm trucks (1963)
• Diameter: 11" (11.236" CARDONE)
• Overall Length: 12-1/2"
• Input Port: 1/2" - 20 Thread
• Output Port: 1/4" Inverted Flare
• Air Cleaner Port: 1/2"
• Vacuum Supply Port: 1/2" NPT (1/2" Inverted Flare)
• End Cap: CE
• Diaphragm Type: Single
• Number of Lines: Three (3) line unit
• Output Port Connects: To master cylinder reservoir
• Housing Material: Steel
• Booster Weight: 23.96 lb
• Unique Features: Remanufactured to OEM standards; core return required
• Performance: Minimum 1000 psi hydraulic pressure at wheel brakes with 150 lbs pedal force @ 16” Hg vacuum
Applications:
Designed for heavy-duty truck and equipment hydraulic brake systems requiring vacuum-assisted boost. Common on Dodge medium trucks, RVs, and Chevrolet medium-duty trucks for reliable braking assistance.
CROSS-REFERENCE(S):
2500660X, 2500660, 51-8002, 374980X, RV374980X, RV374980X-MD, 373853, 374980, 375698, 377215, 51-8056, HDX RV374980X, MID RV374980X, MIDRV374980X, 5396-RV374980X, MBIRV374980X, ZZRV374980X, 767653094762
A cross-reference listing means this part may be a compatible replacement for these part numbers based on OEM or distributor data.
IMPORTANT INSTALLATION NOTES:
✓ Mount using bracket with studs (reuse hardware), universal holes (3/8”-16 bolts), or threaded lugs
✓ Ports have 1/2”-20 threads; adaptors for 7/16”-24 line fittings supplied if required
✓ Vacuum port nipple adapts from 1/2” to 3/8” if needed
✓ Bleed system with engine off following sequence: control valve, end cap, then wheel brakes
✓ Minimum vacuum requirement: 16” Hg for proper operation
✓ Hydraulic pressure minimum: 1000 psi at wheel brakes with 150 lbs pedal force and 16” Hg vacuum
✓ System leakage test: max 2” Hg drop in 60 sec (with reservoir), 15 sec (without reservoir)
SOLD AS REMANUFACTURED | CORE RETURN REQUIRED
Built to OEM standards | thoroughly cleaned, inspected, and tested to ensure durability, performance, and reliability in demanding applications.
SUPPORT & ORDERING
For technical support, installation guidance, or to confirm fitment, Call: 1-877-243-0442 | Email: sales@fleet-products.com
WHY CHOOSE FLEET PRODUCTS | KBR - HEAVY DUTY TRUCK & TRAILER PARTS?
- Canadian-owned and operated since 1985
- Trusted by fleets, mechanics, and B2B partners across North America
- Fast, reliable shipping across North America
- Competitive pricing with core return refunds
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