4.33.021 - Caliper Adjusting Mechanism Washer & Spring Set
5.33.130 - Caliper Top Cover
4.33.025 - Caliper Cover Gasket Set
4.33.030 - Caliper Needle Roller Bearing Set
5.33.033 - Caliper Lever
4.33.042 - Caliper Dust Boot & Guide Pin Repair Kit
5.33.051 - Caliper Mechanism Adjusting Bolt
5.33.056 - Caliper Pad Retainer with Slot - Left
5.33.057 - Caliper Pad Retainer with Slot - Right
5.33.058 - Caliper Pad Retainer with Slot - Left
5.33.059 - Caliper Pad Retainer with Slot - Right
4.33.043 - Caliper Dust Boot & Guide Pin Repair Kit
4.33.044 - Caliper Dust Boot & Guide Pin Bushing Set
4.33.045 - Caliper Dust Boot Set
4.33.046 - Caliper Guide Pin & Bolt Set
4.33.047 - Caliper Dust Boot & Guide Pin Repair Kit
4.33.048 - Caliper Dust Boot & Guide Pin Repair Kit
4.33.049 - Caliper Guide Pin Repair Kit
4.33.050 - Caliper Dust Boot & Guide Pin Repair Kit
4.33.051 - Caliper Dust Boot & Guide Pin Bushing Set
4.33.052 - Caliper Adjusting Mechanism Set
4.33.053 - Caliper Guide Pin & Mechanism Repair Kit
4.33.054 - Caliper Guide Pin & Mechanism Repair Kit
4.33.055 - Caliper Tappet Dust Boot & Cap Set
4.33.056 - Caliper Complete Mechanism Set - (With Pin)
4.33.057 - Caliper Shaft Housing Set
4.33.058 - Caliper Brake Pad Retainer Repair Kit
4.33.059 - Caliper Brake Pad Retainer
Commercial Vehicle Air Disc Brake Calipers & Caliper Repair Kits Manufacturing
GOS Brake Systems is an internationally recognized manufacturer and global exporter of high-precision air disc brake calipers, overhaul sets, and comprehensive caliper repair kits. Operating out of our modern manufacturing plant in Konya, Turkey, we produce 100% OE-compatible braking components engineered specifically for commercial vehicles, heavy-duty trucks, trailers, and buses.
Brake System Compatibility
- KNORR-BREMSE: SN6, SN7, SK7, SL7, SM7, SB5, SB6, SB7, ST7
- WABCO: PAN 17, PAN 19, PAN 22, MAXX 22, MAXX 22T, MAXXUS
- MERITOR: Elsa 195, Elsa 225, D-Lisa, Duco, DX195
- HALDEX / BPW / SAF: ModulT, Eco Disc, Mark II/III
Repair Kit Components
- Guide Pins & Bushings: Induction hardened alloy steel
- Dust Boots & Seals: Heat resistant EPDM elastomer (-40°C / +200°C)
- Adjusting Mechanisms: High-torque synchronized pinion shafts & chains
- Tappets & Pistons: Corrosion protected thrust plates and assemblies
Truck & Trailer Fitment
- Mercedes-Benz: Actros, Axor, Antos, Atego
- Scania & Volvo: R, P, G, S Series / FH, FM, FMX
- MAN, DAF, Iveco, Renault: TGX, XF, Stralis, T-Range
- Trailer Axles: Schmitz Cargobull, Krone, Kögel, BPW, SAF
Manufacturing & Quality Standards
- Micrometric CNC machining tolerance
- Hardness, tensile & salt-spray corrosion tests
- 100% In-house manufacturing (Konya Industrial Zone)
- Worldwide direct export to 50+ countries
Frequently Asked Questions (FAQ)
What components are included in a commercial vehicle air disc brake caliper repair kit?
A comprehensive caliper repair kit includes induction-hardened guide pins, brass or composite bushings, heat-resistant EPDM dust boots (-40°C to +200°C), ring seals, adjuster pinion shafts, chains, tappet heads, and calibration components tailored to specific OEM systems.
How do I find the correct caliper repair kit using OEM or cross-reference numbers?
You can enter any OEM number (e.g. Wabco 6402229202, Knorr K000944, Schmitz 1199858) or vehicle manufacturer part number directly into our search bar. Our cross-reference database will instantly match the precise GOS Brake product code and technical drawing.
How often should caliper guide pin kits and dust boots be serviced or replaced?
Caliper guide pins and rubber boots should be inspected at every brake pad replacement. If there is boot tearing, water ingress, or guide pin play, replacing the kit prevents caliper seizure, uneven pad wear, and catastrophic brake failure.
Are GOS Brake Systems caliper parts fully compatible with original OEM assemblies?
Yes. All GOS Brake caliper components are manufactured to strict OE specifications in dimension, metallurgic composition, and heat-treatment standards, providing 100% interchangeable direct replacement for Knorr, Wabco, Meritor, and Haldex calipers without modification.