PIONEER UD-RP401PRO Repair Kit - Replacement Diaphragm TS-B401PRO 4" P.R.O. Series Bullet Tweeter || Specific Compatibility - Got a bit too enthusiastic with the volume? No worries, the UD-RP401PRO Repair Kit is exclusively designed for the repair of the Pioneer TS-B401PRO Tweeter car audio speaker to ensure optimal functionality. || Revive Your TS-B401PRO - The TS-B401PRO Tweeter is a field serviceable unit designed for hassle-free repair using the UD-RP401PRO repair kit. Crank up the volume worry-free, with the assurance of an easy, at-home repair. || Includes Premium Components - Repair Kit features premium Titanium Diaphragm Tweeter assembly parts, a high-pass filter, and an alignment pin for straightforward installation. || Say Goodbye to Basic Patchwork Solutions – The UD-RP401PRO repair kit empowers you to perform a comprehensive restoration on your car speaker. Just grab your own Allen wrench and screwdriver, and you're ready to breathe new life into your sound system. || Instruction & Repair Information – Please see the Owner's Manual for full detail and repair directions found near the bottom of this page (Technical Specifications).