GT-30/30 GBK Type 30/30 Piggyback Spring Brake Chamber, 2.5″ Regular Stroke with Threaded Push Rod and Clevis Kit, Gold-Finish for Heavy Duty Semi Trucks and Trailers
GBK GT-30/30 gold-finish Type 30/30 piggyback spring brake chamber, 2.5″ regular stroke, fully threaded push rod (5/8″-18 UNF), clevis with two pin holes and mounting hardware included. For drive axles and trailer axles on Class 6-8 semi trucks. Cross Ref. Bendix 800826, Haldex GC3030LP, Meritor MJB3030LP. Sold per piece (4-piece minimum order), 50 pcs/pallet.
Product Specifications
| Material | Gold Powder-Coated Steel |
|---|---|
| Stroke | 2.5" Regular |
| Push Rod Length | 11.2" |
| Clevis | Long Clevis |
| Mounting Holes | 2 |
Packaging: Sold per piece. Packed 4 pieces per box. 50 pcs/pallet.
- Type 30/30 Piggyback Design: Dual-chamber configuration combining service brake (Type 30) and spring brake (Type 30) in a piggyback assembly. Service chamber on top, spring brake on bottom for emergency/parking braking.
- 2.5" Regular Stroke: Standard 2.5-inch stroke (T3030DD Regular Stroke), engineered for S-Cam drum brake applications. Meets FMCSA and DOT brake performance requirements.
- Threaded Push Rod with Clevis Kit: Equipped with fully threaded push rod (5/8"-18 UNF) and clevis with two pin holes for easy slack adjuster alignment. Mounting hardware included.
- Universal Fit: Direct replacement for Class 8 semi trucks and trailers. Fits Freightliner, Kenworth, Peterbilt, Mack, Volvo, and International with S-cam drum brake systems.
- Heavy-Duty Construction: Sealed bottom design with corrosion-resistant gold finish. Reinforced steel housing and premium-grade diaphragm for longer service life. Includes 5/8"-11 UNC mounting studs with 4.75" bolt center spacing and 3/8" NPT air ports.
Technical Specifications: Type: T30/30 Piggyback (Service + Spring) | Service Stroke: 2.5" Regular | Push Rod: Threaded 5/8"-18 UNF | Mounting Studs: 5/8"-11 UNC, 4.75" bolt spacing | Air Port: 3/8" NPT × 2 | Finish: Gold | Includes: Clevis, Cotter Pin, and Mounting Nuts
Packaging & Delivery
Every GBK Parts order is packed with care. Pallet orders are tightly shrink-wrapped and strapped for safe freight transit. Select products also come in individual branded GBK USA retail boxes — ready for resale or direct customer delivery.
About GBK Parts
GBK Parts is a U.S.-based wholesale and retail distributor of heavy-duty commercial truck parts, headquartered in New Jersey. We specialize in brake components, axle parts, and drivetrain hardware for Class 6–8 trucks, trailers, and commercial vehicles.
We source directly from certified OEM-grade manufacturers and maintain a large inventory in our New Jersey warehouse, enabling fast fulfillment for both retail and wholesale customers across the United States.
Why Choose GBK Parts?
- Direct Wholesale Pricing — Competitive pricing with volume discounts for approved B2B accounts.
- OEM-Grade Quality — All parts meet or exceed OEM specifications. Brake components are FMSI-coded and tested to FMVSS standards.
- Fast Shipping — Same-day or next-day shipping on in-stock items. Free UPS Ground shipping on orders over $5,000 to NJ, NY, PA, OH, and MN.
- Catalog-Based Production — Extensive product catalog covering a wide range of heavy-duty truck and trailer parts, available to order.
- NET 15 Terms — Approved wholesale accounts are eligible for NET 15 payment terms.