1990 GMC Topkick Mufflers
Select Your Submodel
- Walker®Heavy Duty Steel Truck Aluminized Exhaust MufflerGMC Topkick 1990, Heavy Duty Steel Truck Aluminized Exhaust Muffler by Walker®. Muffler Configuration: Offset - Offset. Walker offers a complete line-up of exhaust products for today's medium-duty, heavy-duty and commercial vehicles....Makes installation quick and easyOptimal OE-style fit and quality$220.12 - $272.77