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1999, 1998, 1997, 1996 GMC C3500 Exhaust Muffler
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1996 - 1999 GMC C3500 Exhaust Muffler (Flowmaster) NEW

$ 369 .39
120-DayReturns
LifetimeWarranty
100%Money-Back

Product Notes Read before buying

⚠️ Most jobs typically require 2 of this item.
2.75 in. Dual Inlet/2.5 in. Dual Outlet; Case Dimensions 5 in. x 12 in. x 22 in.; 28 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required
50 Series™ Big Block Muffler
The 50 Series Big Block muffler is made for more than just big cubic inch engine applications. Its large case size with internal tuning chamber provides mileage and power gains along with maximum sound control for a quiet interior tone, even under heavy loads. Well suited to heavy duty vehicles such as full size trucks, SUV's, RVs, and tow vehicles. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
Brand: Flowmaster
Condition: New
See Other GMC C3500 Exhaust Mufflers
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Specifications & Info


Attribute Value
Automotive Item Grade High Performance
Body Width 12.000 In.
Fitment Universal
Inlet Connection Type Pipe
Inlet Diameter 2.750 In.
Inlet Inside Diameter 2.750 In.
Inlet Outside Diameter 2.750 In.
Inlet Position Dual
Main Piping Diameter 2.750 In.
Muffler Series 50 Series Big Block
Muffler Type Reflection
Outlet Connection Type Pipe
Outlet Outside Diameter 2.500 In.
Outlet Position Dual
Sound Level Mild
Tip Quantity 0
WARNING CA Proposition 65 No

Vehicle Fitment Guide

This part fits the following vehicles:

GMC 1 model (tapclick to expand)(tapclick to hide)
C3500 1996-1999 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Sierra SL Cab & Chassis 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SL Cab & Chassis 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SL Cab & Chassis 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SL Cab & Chassis 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SL Cab & Chassis 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SL Cab & Chassis 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SL Cab & Chassis 1996 - 1999 V8 7.4L RWD Automatic & Manual
Sierra SL Cab & Chassis 1996 - 1999 V8 7.4L RWD Automatic & Manual
Sierra SL Crew Cab Pickup 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SL Crew Cab Pickup 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SL Crew Cab Pickup 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SL Crew Cab Pickup 1996 - 1999 V8 7.4L RWD Automatic & Manual
Sierra SL Extended Cab Pickup 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SL Extended Cab Pickup 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SL Extended Cab Pickup 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SL Extended Cab Pickup 1996 - 1999 V8 7.4L RWD Automatic & Manual
Sierra SL Standard Cab Pickup 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SL Standard Cab Pickup 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SL Standard Cab Pickup 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SL Standard Cab Pickup 1996 - 1999 V8 7.4L RWD Automatic & Manual
Sierra SLE Cab & Chassis 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SLE Cab & Chassis 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SLE Cab & Chassis 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SLE Cab & Chassis 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SLE Cab & Chassis 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SLE Cab & Chassis 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SLE Cab & Chassis 1996 - 1999 V8 7.4L RWD Automatic & Manual
Sierra SLE Cab & Chassis 1996 - 1999 V8 7.4L RWD Automatic & Manual
Sierra SLE Crew Cab Pickup 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SLE Crew Cab Pickup 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SLE Crew Cab Pickup 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SLE Crew Cab Pickup 1996 - 1999 V8 7.4L RWD Automatic & Manual
Sierra SLE Extended Cab Pickup 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SLE Extended Cab Pickup 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SLE Extended Cab Pickup 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SLE Extended Cab Pickup 1996 - 1999 V8 7.4L RWD Automatic & Manual
Sierra SLE Standard Cab Pickup 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SLE Standard Cab Pickup 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SLE Standard Cab Pickup 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SLE Standard Cab Pickup 1996 - 1999 V8 7.4L RWD Automatic & Manual
Sierra SLT Cab & Chassis 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SLT Cab & Chassis 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SLT Cab & Chassis 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SLT Cab & Chassis 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SLT Cab & Chassis 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SLT Cab & Chassis 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SLT Cab & Chassis 1996 - 1999 V8 7.4L RWD Automatic & Manual
Sierra SLT Cab & Chassis 1996 - 1999 V8 7.4L RWD Automatic & Manual
Sierra SLT Crew Cab Pickup 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SLT Crew Cab Pickup 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SLT Crew Cab Pickup 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SLT Crew Cab Pickup 1996 - 1999 V8 7.4L RWD Automatic & Manual
Sierra SLT Extended Cab Pickup 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SLT Extended Cab Pickup 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SLT Extended Cab Pickup 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SLT Extended Cab Pickup 1996 - 1999 V8 7.4L RWD Automatic & Manual
Sierra SLT Standard Cab Pickup 1997 - 1999 V8 5.7L CNG RWD Automatic & Manual
Sierra SLT Standard Cab Pickup 1996 - 1999 V8 5.7L RWD Automatic & Manual
Sierra SLT Standard Cab Pickup 1996 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Sierra SLT Standard Cab Pickup 1996 - 1999 V8 7.4L RWD Automatic & Manual
Verify before ordering — please confirm your vehicle's year, make, model and sub-model specifications before placing your order. If anything is unclear, our customer service team is available to help.

Policies, in plain English.

Shipping Information

We offer fast, reliable shipping on all orders:

  • Ships to all countries via US Postal Service Priority Mail.
  • Most orders ship within 1 business day.
  • Delivery time: 1-4 business days after shipment.
  • International shipping available, including APO/FPO addresses.
  • Tracking information provided for all shipments.
  • Additional handling fees may apply for oversized/overweight packages.

Lifetime Warranty

This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.

Warranty does NOT cover:

  • Shipping costs or labor expenses.
  • Installation errors.
  • Parts used for racing.
  • Commercial vehicle parts.

Returns (120 Days)

We want you to be 100% satisfied with your purchase. That's why we offer:

  • 120-Day Returns - Return any part within 120 days from date of receipt.
  • Must obtain RMA (Return Merchandise Authorization) number before returning.
  • Parts must be in original condition, uninstalled, unaltered, and in original packaging.
  • Important: Electrical parts are not returnable if unsealed.
  • Please inspect parts upon arrival and notify us within 5 days of receiving incorrect or damaged parts.
  • Refunds processed after warehouse receives return and credited to original payment method.
The 50 Series Big Block muffler is made for more than just big cubic inch engine applications. Its large case size with internal tuning chamber provides mileage and power gains along with maximum sound control for a quiet interior tone, even under heavy loads. Well suited to heavy duty vehicles such as full size trucks, SUV's, RVs, and tow vehicles. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.

Fits Years: 1996 1997 1998 1999

Fits Models: C3500

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