Product Description Brake booster rebuilding service for the E30’s (for Left-Hand-Drive models only). E30 boosters are sent out WITHOUT the 90 degree “elbow” fitting. 325ix boosters are more expensive to rebuild because of the dual diaphragm. THIS IS A SERVICE, NOT A PRODUCT. WE DO NOT HAVE CORES AVAILABLE FOR PURCHASE. How to order: -Place the order online. –Send us your core along with your contact information and order number. Please remove the plastic “elbow” prior to shipment (if applicable) as the are liable to break during shipping. Also we cannot guarantee the rebuilder will keep your elbow intact or return it to us. -We will be making an identification mark on your core to ensure that you get the same core you sent in returned to you. If you have any questions about this, please contact us. -We will inspect and rebuild your core booster (we will call if there are any issues) (1.5 week lead time) -We will ship your rebuilt booster to you.   NOTE: If the black plastic tube underneath the rubber bellows is cracked or broken your booster is not serviceable. This part is not replaceable. Make sure this part is protected well when shipping. WARRANTY CLAIMS: If after installing and using your rebuilt brake booster you find a fault with it, we are happy to have our rebuilder take a look at it to find the issue. We will arrange to have it sent back to us (US residents only). However, if there is contamination in the rebuilt booster after install with brake fluid, fuel, or any other liquids the warranty will be void.