aFe Magnum FORCE Intake Coupling Kit (3-1/4 IN ID x 4-1/2 IN L) Straight Bellow-Coupler - Black Programmers & Chips>Performance Packages 4 Liter S6-650

4 Liter S6-650

Nolathane bushings are made tough and offer outstanding abrasion resistance

The result is a harmonious balance between power

it is backed by Borla(r)'s

ISR Hotpipe - Plain - Nissan SR20DET S13

aFe Magnum FORCE Intake Coupling Kit (3-1/4 IN ID x 4-1/2 IN L) Straight Bellow-Coupler - Black Programmers & Chips>Performance Packages 4 Liter S6-6503 1 8 IN Internal Diameter: This 4 1 2 IN long coupling is designed to connect to a tube with a 3 1 8 IN diameter. It's commonly used on aFe POWER cold air intake systems, but can be used for a variety of projects. Flexible Bellows Silicone: Its bellows design is extremely flexible, making it easy to install, even when dealing with misaligned tubes. It allows for ample expansion, movement and vibration in between two hard pipes. The built in port