Bilstein B3 OE Replacement Springs are designed to replace the originial springs that came on your vehicle. Engineered and manufactured to meet all the OE dimensions and spring rates, they will make your vehicle will feel like new again. No modification is required. Mount the spring in the stock location and you're done. With Bilstein B3 Springs, your vehicle's suspension system operates the way it was designed to and can keep your car on the road longer.