In Audi 01J and 01T units the adjustable end plug capping the UV reduction valve bore is often cracked or broken. The failure occurs at the thin-walled section below the external thread root. The Sonnax UV adjustable end plug 33741B-10 is designed with a thicker wall to eliminate this type of failure.
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.
Contact a Sonnax Parts Distributor.
OE adjustable end plug is cracked or broken.