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Walker 40372 Exhaust Y Pipe

Brand	Walker 40372
Outlet Outside Diameter	2.5
Length	22.5
Grade Type	Regular
Bend Type	Compression
Finish	Aluminized
Inlet Quantity	2
Inlet Type	3 bolt loose flange with flare
Material	Steel
Mounting Hardware Included	No
Outlet Quantity	1
Outlet Type	Pipe connection
Pipe Wall Thickness	0.05
Universal Or Specific Fit	Specific
Fits	Chevrolet and GMC · 56 vehicles

Specific-fit design. Built for direct replacement in listed exhaust applications.

Aluminized steel. Helps resist corrosion and heat in exhaust service.

Precision-checked fit. Manufactured with benders and fixture checks for consistency.

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Walker Exhaust Y Pipe 40372

The Walker 40372 exhaust Y pipe is a specific-fit replacement for classic Chevrolet and GMC truck applications. It is built from aluminized steel and formed with precision bending for a consistent fit during exhaust repair.

Key Features

Aluminized steel construction for corrosion resistance and durability.
Specific-fit design for direct replacement applications.
3-bolt loose flange with flare inlet for secure exhaust connection.
2.5-inch outlet outside diameter for proper exhaust routing.
Compression bend type and fixture-checked manufacturing for accurate alignment.
Walker 40372 is built for exhaust service on vintage truck platforms.

Detailed Description

Walker 40372 is an exhaust Y pipe engineered for select Chevrolet C10, C20, C30, C10 Suburban, C20 Suburban, and GMC C15, C25, C35, C15 Suburban, C25 Suburban applications, along with K5 Blazer and Jimmy fitments listed below. The aluminized finish and steel construction help the pipe stand up to exhaust heat and road exposure, while the precision-bent shape supports a clean installation. This part number, 40372, is a specific-fit exhaust component for restoring proper exhaust flow in compatible Chevrolet and GMC truck systems.

Walker uses precision benders and fixture checking to keep the pipe dimensions consistent. That attention to fit is important when replacing a Y pipe on older Chevrolet C10 and GMC C15 platforms, where exhaust routing and flange alignment must match the original layout. Part number 40372 is intended for applications without a catalytic converter where noted in the fitment data.

What It Is Used For

Replacing a damaged or rusted exhaust Y pipe.
Restoring exhaust routing after flange or pipe failure.
Correcting leaks caused by corrosion at the connection points.
Maintaining proper exhaust flow in specific classic truck systems.
Supporting repair work on Chevrolet and GMC exhaust assemblies.

Installation Notes and Tips

Verify the listed fitment notes before ordering, especially manifold gasket and catalytic converter requirements. This Walker 40372 exhaust Y pipe uses a 3-bolt loose flange with flare inlet and a pipe connection outlet, so matching the existing exhaust layout is important. Mounting hardware is not included. Confirm the vehicle’s exhaust configuration against the fitment table for Chevrolet C10, GMC C25, and related applications.

Quality Assurance

Walker manufactures this pipe with precision benders and fixture checking to support consistent fitment. The aluminized steel construction adds durability for exhaust service, and the part is built as a specific-fit replacement for the listed applications.

This part fits 56 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Drive Type	Liters	Cylinders	Fuel Type	Wheel Base	Notes
1978	Chevrolet	C10	—	5.7L	V8	GAS	—	Fits Models with Manifold Gasket; without Catalytic Converter
1978	Chevrolet	C10	—	5.0L	V8	—	—	Fits Models with Manifold Gasket; without Catalytic Converter
1978	Chevrolet	C10 Suburban	—	5.7L	V8	—	129.5"	Fits Models with Manifold Gasket; without Catalytic Converter
1978	Chevrolet	C10 Suburban	—	5.0L	V8	—	129.5"	Fits Models with Manifold Gasket; without Catalytic Converter
1978	Chevrolet	C20	—	5.0L	V8	—	—	without Catalytic Converter
1978	Chevrolet	C20	—	5.7L	V8	—	—	without Catalytic Converter
1978	Chevrolet	C20 Suburban	—	5.0L	V8	—	129.5"	—
1978	Chevrolet	C20 Suburban	—	5.7L	V8	—	129.5"	—
1978	Chevrolet	C30	—	5.7L	V8	—	135.5"	—
1978	Chevrolet	C30	—	5.7L	V8	—	159.5"	—
1978	GMC	C15	—	5.7L	V8	GAS	—	Fits Models with Manifold Gasket; without Catalytic Converter
1978	GMC	C15	—	5.0L	V8	—	—	Fits Models with Manifold Gasket; without Catalytic Converter
1978	GMC	C15 Suburban	—	5.7L	V8	—	129.5"	Fits Models with Manifold Gasket; without Catalytic Converter
1978	GMC	C15 Suburban	—	5.0L	V8	—	129.5"	Fits Models with Manifold Gasket; without Catalytic Converter
1978	GMC	C25	—	5.7L	V8	—	—	without Catalytic Converter
1978	GMC	C25	—	5.0L	V8	—	—	without Catalytic Converter
1978	GMC	C25 Suburban	—	5.0L	V8	—	129.5"	—
1978	GMC	C25 Suburban	—	5.7L	V8	—	129.5"	—
1978	GMC	C35	—	5.7L	V8	—	159.5"	—
1978	GMC	C35	—	5.7L	V8	—	131.5"	—
1977	Chevrolet	C10	—	5.0L	V8	—	—	Fits Models with Manifold Gasket; without Catalytic Converter
1977	Chevrolet	C10	—	5.7L	V8	—	—	Fits Models with Manifold Gasket; without Catalytic Converter
1977	Chevrolet	C10 Suburban	—	5.0L	V8	—	129.5"	Fits Models with Manifold Gasket; without Catalytic Converter
1977	Chevrolet	C10 Suburban	—	5.7L	V8	—	129.5"	Fits Models with Manifold Gasket; without Catalytic Converter
1977	Chevrolet	C20	—	5.7L	V8	—	131.5"	—
1977	Chevrolet	C20	—	5.7L	V8	—	164.5"	—
1977	Chevrolet	C20 Suburban	—	5.7L	V8	—	129.5"	—
1977	Chevrolet	C30	—	5.7L	V8	—	159.5"	—
1977	Chevrolet	C30	—	5.7L	V8	—	131.5"	—
1977	Chevrolet	K5 Blazer	RWD	5.7L	V8	—	—	with Canada Emissions; with Single Exhaust
1977	GMC	C15	—	5.0L	V8	—	—	Fits Models with Manifold Gasket; without Catalytic Converter
1977	GMC	C15	—	5.7L	V8	—	—	Fits Models with Manifold Gasket; without Catalytic Converter
1977	GMC	C15 Suburban	—	5.7L	V8	—	129.5"	Fits Models with Manifold Gasket; without Catalytic Converter
1977	GMC	C15 Suburban	—	5.0L	V8	—	129.5"	Fits Models with Manifold Gasket; without Catalytic Converter
1977	GMC	C25	—	5.7L	V8	—	131.5"	—
1977	GMC	C25	—	5.7L	V8	—	164.5"	—
1977	GMC	C25 Suburban	—	5.7L	V8	—	129.5"	—
1977	GMC	C35	—	5.7L	V8	—	159.5"	—
1977	GMC	C35	—	5.7L	V8	—	131.5"	—
1977	GMC	Jimmy	RWD	5.7L	V8	—	—	with Canada Emissions; with Single Exhaust
1976	Chevrolet	C10	—	5.7L	V8	—	—	Fits Models with Manifold Gasket; without Catalytic Converter
1976	Chevrolet	C10 Suburban	—	5.7L	V8	—	129.5"	Fits Models with Manifold Gasket; without Catalytic Converter
1976	Chevrolet	C20	—	5.7L	V8	—	131.5"	—
1976	Chevrolet	C20	—	5.7L	V8	—	164.5"	—
1976	Chevrolet	C20 Suburban	—	5.7L	V8	—	129.5"	—
1976	Chevrolet	C30	—	5.7L	V8	—	131.5"	—
1976	Chevrolet	C30	—	5.7L	V8	—	164.5"	—
1976	Chevrolet	K5 Blazer	RWD	5.7L	V8	—	—	with Canada Emissions; with Single Exhaust
1976	GMC	C15	—	5.7L	V8	—	—	Fits Models with Manifold Gasket; without Catalytic Converter
1976	GMC	C15 Suburban	—	5.7L	V8	—	129.5"	Fits Models with Manifold Gasket; without Catalytic Converter
1976	GMC	C25	—	5.7L	V8	—	131.5"	—
1976	GMC	C25	—	5.7L	V8	—	164.5"	—
1976	GMC	C25 Suburban	—	5.7L	V8	—	129.5"	—
1976	GMC	C35	—	5.7L	V8	—	164.5"	—
1976	GMC	C35	—	5.7L	V8	—	131.5"	—
1976	GMC	Jimmy	RWD	5.7L	V8	—	—	with Canada Emissions; with Single Exhaust
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