Flowmaster 40 Delta Flow Muffler-2.50 Center In / 2.25 Dual Out - Aggressive Sound Steering Componets GMC: Sierra 2500 99 -

GMC: Sierra 2500 99 - 04 6 L Engine

Our tools (molds) are stored indoors to reduce warping

including rattles and squeaks to ensure a like new driving experience and add longstanding value to your investment

2 1/4" long Fan Spacer Kit

Knee Guard

Flowmaster 40 Delta Flow Muffler-2.50 Center In / 2.25 Dual Out - Aggressive Sound Steering Componets GMC: Sierra 2500 99 -40 Delta Flow Muffler 2. 50 Center In 2. 25 Dual Out Aggressive Sound Universal Muffler Not a direct fit. Some adaptation required. This two chamber design incorporates Flowmaster's patented Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over Original 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded