Walker 40365 Exhaust Y Pipe

Walker 40365 Exhaust Y Pipe for GM Trucks

Walker 40365 is a specific-fit exhaust Y pipe built for select Chevrolet and GMC full-size trucks and SUVs with single exhaust. It uses aluminized steel construction, a 0.05-inch pipe wall, and precision bending for a direct-fit replacement that matches the original routing.

Key Features

• Aluminized steel construction for corrosion resistance and durability
• Specific-fit design for select Chevrolet K10, K20, K5 Blazer, K30, and GMC Jimmy applications
• 2.5-inch outlet outside diameter with a 40-inch overall length
• Two inlets with 3-bolt loose flange and spherical flare connection
• Compression bend type for OE-style exhaust routing
• Walker part number 40365 for easy catalog matching

Product Details

This exhaust Y pipe is engineered for 1976-1979 Chevrolet and GMC applications that use a single exhaust system, including 1976-1978 Chevrolet K10, K20, K5 Blazer, K10 Suburban, K20 Suburban, and GMC Jimmy, plus 1977-1979 Chevrolet K30 and 1979 GMC K3500. Walker 40365 is manufactured with precision benders and fixture-checked for fit accuracy, helping the pipe align properly during replacement work on GM truck exhaust systems.

The aluminized finish and steel construction support long-term service in demanding underbody conditions. For buyers searching for a Walker 40365 exhaust Y pipe for 1976-1978 Chevrolet K20 or a direct-fit exhaust Y pipe for 1977-1979 Chevrolet K30 single exhaust, this part matches the listed configuration and outlet size.

Common Repair Uses

• Replacing a rusted or leaking factory Y pipe
• Restoring exhaust flow after flange or pipe damage
• Correcting exhaust noise caused by cracks or separation
• Repairing a failed connection in a single-exhaust GM truck system
• Returning the exhaust path to OE-style routing on compatible Chevrolet and GMC models

Installation Notes

Verify engine and exhaust configuration before installation, especially single-exhaust layout and California emissions notes where listed. This pipe uses a 3-bolt loose flange with spherical flare inlet design, so flange alignment and sealing surfaces should be inspected before assembly. Test-fit the pipe before final tightening to confirm proper clearance and connection alignment.

Quality Assurance

Walker manufactures this pipe from aluminized steel and uses precision bending plus fixture checking to help maintain dimensional accuracy. That production process supports consistent fitment for the listed Chevrolet and GMC applications.