PA1133ASA – GBK Automatic Slack Adjuster, 6″ Arm, 10-Spline, 1.5″ Diameter, Replaces Gunite AS1133
Automatic slack adjuster, 6″ arm length, 10 splines, 1.5″ diameter. Cross Ref. Gunite AS1133, Sirco 2172, Bendix 065172. 6 pcs/ctn.
- Automatic Slack Adjuster: GBK PA1133ASA features automatic brake adjustment, continuously maintaining optimal brake clearance for enhanced safety and reduced manual maintenance.
- Heavy Duty Construction: Engineered with durable, high-strength materials to endure the rigorous demands of commercial truck and trailer brake systems.
- Key Specifications: 6" arm length, 10 splines with a 1.5" diameter spline shaft, ensuring precise fit and reliable operation in heavy-duty applications.
- OEM Replacement Compatibility: Directly replaces Gunite AS1133, Bendix 065172, Sirco 2172, and Midland CS56033, providing seamless integration as an OEM replacement part for semi truck brake systems.
- Wide Vehicle Compatibility: Ideal for use on most semi trucks, trailers, and commercial heavy-duty vehicles requiring 10-spline automatic slack adjusters for DOT compliant brake performance.
- Industry Standards Compliance: Manufactured to meet or exceed DOT regulations and industry standards for safety and reliability in commercial trucking operations.
- Packaging Information: Supplied in cartons containing 6 pieces per carton, suitable for fleet maintenance and repair shop inventory needs.
Product Specifications
| Product Type | Automatic Slack Adjuster |
|---|---|
| Length | 6" Arm |
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.