Dynomax 43661 Exhaust Pipe

Brand Dynomax 43661
Material Steel
Outlet Outside Diameter 2.5
Inlet Inside Diameter 2.5
Inlet Quantity 1
Outlet Quantity 1
Bend Type Mandrel
Class Pw
Finish Aluminized
Fitment Direct fit
Inlet 1 Inside Diameter 2.5
Inlet 1 Type Pipe connection
Inlet Connection Type Pipe
Inlet Diameter 2.500 in.
Inlet Diameter Designation Inside diameter
Inlet Quantity 1
Length 27.5
Main Piping Diameter 2.500 in.
Mandrel Bent Yes
Material Steel
Max Year Covered 1993
Min Year Covered 1988
Most Popular Make/Model Chevrolet c1500
Most Popular Year 1993
Outlet 1 Outside Diameter 2.5
Outlet 1 Type Pipe connection
Outlet Connection Type Pipe
Outlet Diameter 2.500 in.
Outlet Diameter Designation Outside diameter
Outlet Quantity 1
Overall Length 27.500 in.
Fits Chevrolet and GMC · 144 vehicles

Direct fit. Precision-bent pipe is fixture checked for quick, easy installation.

Mandrel-bent steel. Maintains smooth exhaust flow with a durable aluminized finish.

2.5-inch pipe. Sized for a clean pipe connection with matching inlet and outlet diameters.

$44.00Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $44.00
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Dynomax 43661 Exhaust Pipe Overview

Dynomax 43661 is a direct-fit exhaust pipe built for 1988-1993 Chevrolet C1500, C2500, K1500, K2500 and GMC C1500, C2500, K1500, K2500 applications. It uses 2.5-inch inlet and outlet connections, mandrel bends, and aluminized steel construction for a precise replacement on compatible trucks.

For buyers searching for a 2.5 inch exhaust pipe for Chevrolet C1500 or GMC K1500, this Dynomax pipe is sized for specific-fit installation and measured at 27.5 inches overall length. Part number 43661 is also listed for single-outlet muffler setups that may require outlet trimming during installation.

Key Features

  • Part number: 43661
  • Direct-fit exhaust pipe for specific vehicle applications
  • 2.5 in. inlet and 2.5 in. outlet diameter
  • Mandrel-bent steel construction
  • Aluminized finish for corrosion resistance
  • 27.5 in. overall length
  • 0.054 in. pipe wall thickness
  • Fits 1988-1993 Chevrolet C1500, C2500, K1500, K2500
  • Fits 1988-1993 GMC C1500, C2500, K1500, K2500

Detailed Description

Dynomax 43661 is a premium exhaust pipe engineered for a direct fit on select Chevrolet and GMC full-size trucks from 1988 through 1993. The pipe is manufactured from steel with an aluminized finish and mandrel bends to maintain consistent exhaust flow through the 2.5-inch main piping. Precision bending and fixture checking help support accurate alignment during replacement work on Chevrolet C1500 and GMC K1500 exhaust systems.

This exhaust pipe is listed for single-outlet muffler applications and may require a cut on the outlet depending on the vehicle setup. If you are replacing a worn or damaged exhaust section on a 1988-1993 Chevrolet C2500 or GMC C2500, Dynomax 43661 provides the correct diameter and direct-fit configuration for the specified platform. Part number 43661 is a practical choice when restoring factory-style exhaust routing on compatible trucks.

Common Uses

  • Replacing a rusted or damaged exhaust pipe section
  • Restoring proper exhaust routing on 1988-1993 Chevrolet C1500 and GMC C1500 trucks
  • Addressing exhaust leaks caused by corrosion or pipe thinning
  • Matching a 2.5-inch single-outlet muffler setup
  • Repairing exhaust fitment on C2500 and K2500 truck applications

Installation Notes

Compatible With 1988-1993 Chevrolet C1500, C2500, K1500, K2500 and 1988-1993 GMC C1500, C2500, K1500, K2500 applications. Review the outlet side before installation, as the notes indicate the pipe may require a cut on the outlet for single-outlet muffler configurations. Verify 2.5-inch inlet and outlet sizing, overall length, and routing before final assembly.

Quality Assurance

Dynomax manufactures this pipe with precision benders and fixture checks to support consistent fitment. Dynomax is part of Tenneco Inc. and its exhaust products are backed by global engineering resources and technical support materials.

This part fits 144 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersWheel BaseNotes
1993ChevroletC15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1993ChevroletC15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1993ChevroletC15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1993ChevroletC15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1993ChevroletC25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1993ChevroletC25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1993ChevroletK15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1993ChevroletK15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1993ChevroletK15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1993ChevroletK15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1993ChevroletK25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1993ChevroletK25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1993GMCC15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1993GMCC15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1993GMCC15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1993GMCC15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1993GMCC25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1993GMCC25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1993GMCK15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1993GMCK15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1993GMCK15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1993GMCK15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1993GMCK25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1993GMCK25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1992ChevroletC15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1992ChevroletC15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1992ChevroletC15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1992ChevroletC15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1992ChevroletC25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1992ChevroletC25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1992ChevroletK15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1992ChevroletK15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1992ChevroletK15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1992ChevroletK15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1992ChevroletK25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1992ChevroletK25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1992GMCC15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1992GMCC15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1992GMCC15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1992GMCC15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1992GMCC25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1992GMCC25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1992GMCK15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1992GMCK15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1992GMCK15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1992GMCK15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1992GMCK25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1992GMCK25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1991ChevroletC15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1991ChevroletC15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1991ChevroletC15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1991ChevroletC15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1991ChevroletC25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1991ChevroletC25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1991ChevroletK15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1991ChevroletK15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1991ChevroletK15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1991ChevroletK15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1991ChevroletK25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1991ChevroletK25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1991GMCC15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1991GMCC15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1991GMCC15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1991GMCC15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1991GMCC25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1991GMCC25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1991GMCK15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1991GMCK15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1991GMCK15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1991GMCK15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1991GMCK25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1991GMCK25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1990ChevroletC15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1990ChevroletC15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1990ChevroletC15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1990ChevroletC15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1990ChevroletC25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1990ChevroletC25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1990ChevroletK15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1990ChevroletK15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1990ChevroletK15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1990ChevroletK15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1990ChevroletK25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1990ChevroletK25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1990GMCC15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1990GMCC15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1990GMCC15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1990GMCC15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1990GMCC25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1990GMCC25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1990GMCK15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1990GMCK15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1990GMCK15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1990GMCK15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1990GMCK25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1990GMCK25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1989ChevroletC15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1989ChevroletC15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1989ChevroletC15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1989ChevroletC15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1989ChevroletC25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1989ChevroletC25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1989ChevroletK15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1989ChevroletK15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1989ChevroletK15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1989ChevroletK15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1989ChevroletK25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1989ChevroletK25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1989GMCC15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1989GMCC15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1989GMCC15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1989GMCC15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1989GMCC25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1989GMCC25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1989GMCK15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1989GMCK15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1989GMCK15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1989GMCK15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1989GMCK25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1989GMCK25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1988ChevroletC15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1988ChevroletC15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1988ChevroletC15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1988ChevroletC15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1988ChevroletC25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1988ChevroletC25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1988ChevroletK15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1988ChevroletK15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1988ChevroletK15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1988ChevroletK15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1988ChevroletK25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1988ChevroletK25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1988GMCC15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1988GMCC15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1988GMCC15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1988GMCC15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1988GMCC25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1988GMCC25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1988GMCK15004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler
1988GMCK15005.0LV8117.5"May Require Cut on Outlet; Single Outlet Muffler
1988GMCK15005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1988GMCK15004.3LV6117.5"May Require Cut on Outlet; Single Outlet Muffler
1988GMCK25005.0LV8131.5"May Require Cut on Outlet; Single Outlet Muffler
1988GMCK25004.3LV6131.5"May Require Cut on Outlet; Single Outlet Muffler