NRW-Design BMW S65 / S85 Silicone Throttle Body Coupler Set

The NRW-Design Silicone Coupler Kit offers a high-quality, long-lasting upgrade to the failure-prone OEM throttle body and plenum couplers found on BMW’s S65 and S85 engines.

Over time, factory rubber couplers degrade—becoming brittle, deformed, and prone to leaking. These are treated by BMW as wear items, often needing replacement. NRW Design addresses this with a permanent solution: direct-fit silicone couplers engineered to outperform and outlast the OEM parts.

Key Features:

• High-Performance Silicone Construction – Handles extreme heat and cold without cracking or losing shape.
• Direct OEM Replacement – Designed to match factory fitment for a hassle-free install on both naturally aspirated and supercharged setups.
• Boost-Tested & Track-Proven – Suitable for high-performance applications.
• Durable Clamping Hardware Included –
  
  • S65 Kit: 8 silicone couplers + 8 replacement lower worm clamps
  • S85 Kit: 10 silicone couplers + 10 replacement lower worm clamps
  • Top OEM clamps are reused and fully compatible

Backed by NRW’s engineering and proven on street and track, these couplers provide a true lifetime solution for aging intake systems.