5" ID to 4" ID Diesel / Race Exhaust Reducer / Adapter / Coupler

Product Description

Upgrade or adapt your exhaust system with the AP Exhaust 8958 reducer coupler, designed to connect 5 inch outside diameter exhaust tubing to 4 inch outside diameter tubing. This reducer features a 5 inch inside diameter on one end and a 4 inch inside diameter on the other, allowing it to slip over the outside of each pipe for a secure lap joint connection. The smooth tapered transition helps maintain proper exhaust flow while reducing turbulence between pipe sizes. Constructed from durable aluminized steel, it provides good resistance to heat, corrosion, and road conditions for long lasting performance. Ideal for exhaust repairs, custom fabrication, or performance upgrades, this coupler can be welded or clamped in place for a strong, leak free joint. Please verify your pipe outside diameters before purchasing to ensure proper fit.