5.11.027 - Caliper 3-Thread Adjuster Screw (Long)
5.11.028 - Caliper Adjusting Mechanism
5.11.029 - Caliper Adjuster Gear
5.11.030 - Caliper Adjuster Mechanism Chain (12 Links)
5.11.031 - Caliper Needle Bearing Seat / Journal
5.11.033 - Caliper Plastic Cover (Without Sensor)
5.11.034 - Caliper Plastic Cover with Sensor (2-Wire)
5.11.035 - Caliper Plastic Cover with Sensor (3-Wire)
5.11.036 - Caliper Plastic Cover with Sensor (3-Wire)
4.11.001 - Caliper Guide Pin Repair Kit
4.11.002 - Caliper Guide Pin Repair Kit
4.11.003 - Caliper Guide Pin Repair Kit
4.11.004 - Caliper Guide Pin Repair Kit
4.11.005 - Caliper Dust Boot and Cap Set
4.11.006 - Caliper Outer Boot and Cap Set
4.11.007 - Caliper Guide Pin Cap and O-Ring Set
4.11.008 - Brake Pad Tappet and Dust Boot Set - Ø74 mm
4.11.009 - Brake Pad Tappet Set - Ø74 mm
4.11.010 - Caliper Guide Pin and Dust Boot Set
4.11.011 - Caliper Bridge / Synchronizer Assembly
4.11.012 - Caliper Needle Roller Bearing Set
4.11.013 - Brake Pad Retainer Repair Kit
4.11.014 - Caliper Needle Bearing Seat / Support Set
4.11.015 - Caliper Guide Pin Plastic Sleeve / Bushing Set
4.11.016 - Caliper Guide Pin Plastic Sleeve / Bushing Set
4.11.017 - Caliper Complete Overhaul Repair Kit
4.11.018 - Caliper Complete Repair Kit (Without Lever)
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.