Review on 🔧 Dewhel Billet Turbo Resonator Plug Cover Cap - Silver for Chevy 2004.5-2010 Duramax Diesel LBZ LLY LMM: Product Review and Buying Guide by Samik Drusky

Very disappointed with the fit of this product. I should have read other reviews and knew this part was better suited to the 2008 LMM recording. The part OD is undersized by approximately 1/16" (not measured. Manually calibrated only), or the o-rings are too small, the o-ring grooves are cut too deep, or both. Not sure what was supposed to happen, but this fits super sloppy. Apply silicone to the surface that will be in contact with the top of the intake elbow, wrap tape around the cap and OD of the manifold a few times to ensure it is secure. I didn't need to change the "custom" part for this very standard application. Disappointing and not recommended.