HPS 3.5" - 4" OD, 4" Long 6061 Aluminum Step Up Transition Joiner Reducer Tube PipingKey Features Tubing outside diameter: 3 1 2 4 inch (89mm 102mm). Length: 4 inch. Material: 6061 T6 aluminum. Wall thickness: 2mm. Tubing inside diameter: 3 3 8 3 7 8 inch (86mm 98mm). Commonly used in industrial, automotive, marine and aerospace applications. Great for custom fabrication, DIY projects, and welding. Build your high performance air intake, cooling radiator and heater system, turbo intercooler piping and reducing tubing setup. OD: 3 1 2"

Outside Diameter: 2 3/4" (70mm)

Replaces OEM PN: 55056876AB

Replaces OEM PN: 4G0121049Q

Made of Premium grade Silicone

HPS black 1-1/2" - 2-1/4" (38mm - 57mm) ID with 3" length high temp 4-ply reinforced silicone reducer coupler hose (Maximum working pressure: 80 psi

With its unique diaphragm design

x1 Stainless steel sleeve

HPS 1-3/8" - 1-1/2" (35mm - 38mm)

Fits: 92-95 Honda Civic with K-Swap (US & JDM)

HPS 5/32" (4mm) Blue high temp reinforced silicone heater hose 10 feet roll meet and exceed SAEJ20 industry standards

Part Number: T70203R

The Black Thermic coating leaves a nice finish and protects the rotors against corrosion