18003998X Hydraulic Brake Booster for GM, Ford, IHC Remanufactured Delco Unit

18003998X - DELCO HY-POWER

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SKU:

18003998X

Condition:

Refurbished

Availability:

Call 877-243-0442 for pricing. Mention code WEB1

Product Description

DELCO HY-POWER 18003998X HYDRAULIC BRAKE BOOSTER – MEDIUM/HEAVY-DUTY TRUCKS
PART NUMBER(S):

Delco: 18003998X

DESCRIPTION:
Model: Hydraulic Brake Booster – Remanufactured, Threaded Push Rod
Engines: Gasoline and diesel engines in medium and heavy-duty fleet applications
Vehicles: GM medium/heavy trucks, International Harvester (IHC), Ford commercial trucks
• Remanufactured hydraulic booster assembly with integrated threaded push rod
• Standard 5-1/2" threaded rod
• Frame or firewall-mounted Hy-Power style unit
• Tube-type O-ring hydraulic fitting, designed for Hydro-Vac assist systems
• Compatible with 501830C91 / 20001K flow switch (required for proper function)
• Housing diameter ~12.75", diaphragm ~11.25"
• Core return required – remanufactured to OEM specifications
Applications:
Engineered for medium and heavy-duty GM, IHC, and Ford trucks using Hy-Power hydraulic assist systems. Frequently installed on vehicles requiring robust frame or firewall-mounted brake booster units. Common in commercial fleets operating on demanding duty cycles.

CROSS REFERENCES:
18003998, 600-18003998, 600-18003998S, RV18003998X, TWDH18003998X, H18003998X, 484238C91, 504837C91, 2623435, 2823435, 501830C91, 600-501830C91, RV20001K, 18005544, 5396, 5396-RV20001K, HDXRV20001K, ZZRV20001KM1D, 767653166988, MIDRV20001K, 18001810, 18001148, 18004527, 18006232, 18011248, 18011482, 18012148, 18012330, 18018077, 18015765

A cross-reference listing means this part should be a suitable replacement for the part numbers listed. Please confirm all ports and dimensions match your application before installing.

INSTALLATION NOTES:

Supplied with 5-1/2" threaded push rod – verify length; RS2 extension available for 7" configuration

Flow switch (501830C91 / RV20001K) required – confirm function before install

Use tube-type O-ring fittings with appropriate hydraulic brake fluid (DOT 3 or DOT 4)

Mount securely to frame or firewall using OEM bracket orientation

Core unit must be returned in reusable condition per remanufacturer terms

System bleeding and function test required post-installation

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
Price Match Guarantee | Find a better price? We'll beat the difference by 10%!

Warranty Information

Fleet Products Ltd. and KBR offer a comprehensive warranty on new and remanufactured truck parts, guaranteeing freedom from defective materials and workmanship for up to 160,000 km (100,000 miles), 3,600 hours, or 12 months-whichever comes first. Off-highway components are covered for 90 days against defects. To claim warranty service on truck brake parts or other components, return the product within 30 days of discovering a defect for inspection. This warranty covers repair or replacement of defective parts, but excludes damages from improper installation, maintenance, or service, and does not cover incidental costs such as towing or downtime. This ensures reliable truck parts and peace of mind for commercial vehicle operators. Visit our warranty section on website for full warranty details and product-specific terms.