Nissan RB26DETT GTR Throttle Body Lip Seal Kit https://www.efihardware.com/products/2875/Nissan-RB26DETT-GTR-Throttle-Body-Lip-Seal-Kit
Older GTR's running the Multi-Throttle RB26DETT engine are known for Throttle Shaft Seal issues.
Use this kit to replace your throttle shaft seals and have fully sealed throttles on your RB26DETT.