Sealed Type 30/30 Spring Brake - 2.5" Standard Stroke GC3030 165255 179.SB3030S

• Sealed Housing Design: Features a fully sealed parking chamber that locks out moisture, road salt, and corrosive chemicals, preventing internal spring rust and catastrophic failure.
• Standard 2.5" Stroke: Engineered to exact 2.5-inch standard stroke specifications to maintain perfect geometry with your slack adjusters and ensure even, powerful brake application.
• Type 30/30 Capacity: Delivers 30 square inches of service braking power and 30 square inches of parking brake hold, matching the standard requirements for heavy-duty Class 8 drive and trailer axles.
• DOT Compliant Safety: Built to strict Fleet Standard quality controls to ensure your air brake system passes rigorous DOT inspections and performs flawlessly under heavy payloads.
• Direct Aftermarket Replacement: Provides a seamless, drop-in replacement for top industry brake chambers like Haldex GC3030, Bendix 165255, and Freightliner 3030TS.

Ensure reliable stopping power and keep your commercial vehicle completely DOT-compliant with this premium Sealed Type 30/30 Spring Brake by FleetPro Parts & Tires. Manufactured to strict Fleet Standard specifications, this heavy-duty air brake chamber is a critical safety component for any Class 8 truck or trailer. A leaking diaphragm or rusted internal power spring will cause brake drag, sluggish response, and immediate weigh station failures. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, diesel repair shops, and owner-operators nationwide.

Heavy-Duty Stopping Power: The Sealed Type 30/30 Spring Brake Advantage

This Sealed Type 30/30 Spring Brake (Part # 179.SB3030S) is engineered for maximum longevity in harsh, corrosive environments. Featuring a standard 2.5-inch stroke, it provides the precise pushrod travel required for optimal slack adjuster geometry and brake shoe engagement. The fully sealed housing design is a major upgrade for vocational and winter-driven trucks, as it actively prevents road salt, moisture, and debris from contaminating the internal parking spring, drastically reducing the risk of premature spring fracture and chamber failure.

As we continue to build the largest inventory of commercial truck air brake components in Illinois, we prioritize wheel-end safety hardware that offers reliable, "bolt-on" aftermarket performance. Serving as a professional-grade replacement for highly searched industry part numbers like Haldex GC3030, Bendix 165255, and Freightliner 3030TS, this brake chamber is a shop essential. Manufactured by Automann, it delivers the rugged, heavy-duty durability your fleet demands to stay safely on the road.

Vehicle Fitment & Compatibility

This heavy-duty aftermarket air brake chamber features a universal design intended for the following commercial applications:

• Application: Universal Class 8 Commercial Trucks & Trailers
• Brake System: Heavy-Duty S-Cam Drum Air Brakes
• Mounting: Standard Stud Mount for Drive and Trailer Axles

Direct Replacement & Cross-Reference Numbers:

This aftermarket spring brake serves as a direct exact-fit replacement for the following part numbers:

• Haldex Interchange: GC3030, GC3030P40
• Bendix Interchange: 165255, K049898, NT3030STD78, NT3030STD120, NT3030STD-120
• Freightliner: 3030TS
• Mack: 19QE441RP1
• Automann Part #: 179.SB3030S

Technical Specifications

• Component Type: Spring Brake Chamber (Piggyback/Complete)
• Size Type: Type 30/30 (30 sq. in. Service / 30 sq. in. Parking)
• Stroke Length: 2.5" (Standard Stroke)
• Design Style: Sealed Housing
• Product Level: Fleet Standard
• Brand: Automann (Distributed by FleetPro Parts & Tires)