Premium OEM-grade exhaust back pressure sensor engineered for precision monitoring in heavy-duty truck engines. High-temperature resistant ceramic core with nickel-plated brass housing ensures durability under extreme conditions. Direct-fit replacement for multiple Audi models including part numbers A0091535028, 81CP23-02, A0041531428. Laser-calibrated pressure sensitivity maintains optimal emissions control and turbocharger efficiency. Seamless integration with electronic control units for real-time combustion optimization. Ideal for fleet maintenance shops and commercial vehicle operators requiring reliable OEM-spec performance. Vacuum-sealed packaging prevents moisture damage during storage and shipping.