This brake caliper expansion spring with OE part number 4M0 615 269 B is specially matched for SAIC Audi A7 (AA7). It acts as an anti-rattle retention clip for front brake pads, stabilizing brake pad clearance, eliminating abnormal braking squeal, vibration and pad loose displacement. Made of high-strength spring steel with anti-rust surface treatment, it perfectly solves common failures including spring fatigue, deformation, fracture and brake drag caused by aging original springs. We support one-stop bulk procurement, stable stock and customized packaging for auto repair shops, auto parts distributors and maintenance chain stores.
Core Advantages
- Exact OE Matching Dimension
Produced strictly per original 4M0 615 269 B drawing standards. Bending radian, installation bayonet and elastic tension are fully consistent with OEM parts, plug-and-play without trimming or modification.
- High-Elasticity Spring Steel Material
Adopts high-toughness automotive spring steel, stable elastic recovery after long-term reciprocating extrusion, not easy to lose elasticity or break under frequent braking and high temperature circulation.
- Anti-Corrosion Rust-Proof Surface Treatment
Integrated galvanized anti-rust layer, resistant to mud, water, brake dust and high-temperature oxidation under wheel hub environment, long service life without rust jamming.
- Effective Anti-Vibration & Noise Reduction
Maintains constant preload on brake pads, avoids pad shaking during driving and light braking, completely eliminates high-frequency brake squeal and abnormal vibration noise.
- One-Stop Bulk Procurement Support
Adequate spot inventory, flexible MOQ, mixed batch delivery and customized label/packaging services. All products pass strict factory dimensional, elasticity and salt spray tests, stable quality for long-term wholesale cooperation.



