BMW 325xi head gasket and intake kit issue requiring short block engine replacement on BMW 325xi

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some BMW 325xi owners report experiencing significant issues related to the head gasket and intake kit, which may necessitate a short block engine replacement. Symptoms of a failing head gasket include white smoke emissions and a milky texture in the oil, indicating potential contamination. Additionally, problems with the intake kit can manifest as backfiring, which warrants immediate attention to ensure proper engine function. In severe cases, these issues can lead to costly repairs, with estimates for head gasket replacement ranging from $1200 to $2500 or more. Owners are advised to conduct thorough diagnostic tests, such as compression and leakdown tests, before proceeding with a short block engine replacement. To prevent future complications, using quality parts and considering complementary modifications, like replacing the VANOS oil line, can enhance engine performance and reliability. Addressing these concerns promptly is crucial to avoiding more serious problems and maintaining the BMW's efficiency.

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