Looking for aftermarket parts to modify or upgrade your 1999 GMC Sierra 1500 with muffler? At Tunersports.com we carry a huge selection of the top name brand performance muffler parts and accessories for your Sierra 1500.
Whether you have a 1999 GMC Sierra 1500 in SL to SLT trim we have you covered. We have 2 muffler available to mod your Sierra 1500. All parts have free shipping to the Continental US 48 States.
 IN STOCK 12649MagnaFlow Performance mufflers are 100% stainless steel and lap-joint welded for solid construction and rugged reliability even in the most extreme conditions. They feature a free-flowing, straight-through perforated stainless steel core; stainless mesh wrap and acoustical fiber fill to deliver th... MagnaFlow Muffler Mag SS 18X6X6 3/3 C/C 1999-2003 GMC Sierra 1500 SL 1999-2006 GMC Sierra 1500 SLE / SLT $145.00 |
 SHIPS FROM MANUFACTURER 14221MagnaFlow Performance mufflers are 100% stainless steel and lap-joint welded for solid construction and rugged reliability even in the most extreme conditions. They feature a free-flowing, straight-through perforated stainless steel core; stainless mesh wrap and acoustical fiber fill to deliver th... MagnaFlow Muffler Mag SS 5X8 14 3/2.5 1999-2003 GMC Sierra 1500 SL 1999-2006 GMC Sierra 1500 SLE / SLT $200.31 |