Description
Restore smooth caliper sliding action and protect your heavy-duty braking system from premature wear with the genuine Knorr-Bremse Air Disc Brake Caliper Repair Kit & Rubber Boots. Engineered specifically for Knorr-Bremse air disc brakes (such as SN, SB, and SK series platforms), this comprehensive maintenance kit provides high-grade replacement rubber boots, guide pin seals, internal O-rings, and specialized lubricating grease. Torn rubber boots, cracked guide seals, and contaminated internal mechanisms eventually allow moisture, road salt, and debris to enter the caliper housing, leading to seized guide pins and costly total caliper failure. This professional-grade repair kit solves those issues directly. It utilizes premium-grade EPDM elastomers, precision-molded sealing geometry, and high-temperature resistance to maintain airtight pneumatic integrity, ensure effortless caliper sliding, and extend the operational life of your commercial vehicle brakes.
Technical Parameters
| Category | Specifications & Technical Details |
| Specialized High/Low-Temperature EPDM Rubber Boots | We manufacture these boots from high-quality EPDM rubber. As a result, they maintain outstanding elasticity under extreme conditions from -40°C severe cold to +150°C continuous braking heat. Moreover, they never harden, crack, or deform. |
| Precision Guide Pin Sealing & Dust Barrier Design | We equip the kit with tightly fitted multi-lip guide pin seals. Consequently, they completely block de-icing salt, mud, high-pressure water jet washing, and road moisture from entering the sliding cavity. |
| Complete Internal Adjuster Seal & O-Ring Set | This kit includes a full set of high-precision internal O-rings and dust gaskets that maintain pneumatic pressure and prevent grease leakage. Therefore, the adjuster mechanism stays clean and well-lubricated over the long term. |
| Long-Lasting High-Temperature Synthetic Caliper Grease | We include specialty high-temperature, anti-seize synthetic grease with the kit. As a result, it significantly reduces friction resistance between the guide pin and sliding groove. Meanwhile, it eliminates fretting wear. |
| OE-Grade Tolerance & Exact Caliper Compatibility | We manufacture all rubber components and sealing gaskets strictly to Knorr-Bremse OEM technical standards. Consequently, they perfectly fit the caliper housing and guide pin grooves for seamless installation. |
Applicable Car Brands & Models
Rubber boots and seals should be inspected during every routine brake pad change (typically every 50,000 to 100,000 kilometers) and immediately replaced if you observe:
Torn, Cracked, or Deteriorated Rubber Boots: Visible splits or rotting on the guide pin dust covers.
Stuck or Sluggish Caliper Slide: The caliper fails to slide freely on its pins, causing uneven pad wear.
Grease Leakage or Contamination: Lubricating grease leaking out or mixed with dirt and road grime inside the joint.
You can reuse the guide pins only if they are thoroughly cleaned and show absolutely no pitting, scoring, or corrosion. However, if the guide pins show surface wear or rust, replacing them alongside the repair kit is strongly recommended to ensure smooth caliper movement.
Yes, absolutely. You must use only the specialized high-temperature, synthetic brake grease included in or approved for the kit. Standard petroleum-based greases will degrade the EPDM rubber boots, cause them to swell, and lead to premature seal failure.
Each repair kit is sealed in a moisture-resistant protective poly bag to preserve elastomer freshness, packed inside a labeled branded industrial box, and safeguarded against dust and UV exposure during international wholesale transit.
