2003 Chevrolet Flowmaster Parts
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- 50 Series™ Big Block Muffler
- 3.0 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; 3.0 in. Dual Inlet/2.5 in. Dual Outlet; Case Dimensions 5 in. x 12 in. x 22 in.; 28 in. Overall Length; Aluminized Steel;
- 50 Series(TM) Big Block Muffler
- Product Attributes:
- Tip Quantity: 0
- Automotive Item Grade: High Performance
- Muffler Type: Reflection
- Outlet Connection Type: Pipe
- Outlet Position: Dual
- Sound Level: Mild
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 12.000 In.
- Muffler Series: 50 Series Big Block
- Outlet Outside Diameter: 2.500 In.
- Inlet Position: Dual
- Inlet Connection Type: Pipe
-
Features:
- Durable Fully Welded 16ga Aluminized Steel
- 3 Year Limited Warranty
- Stock to Mild Exterior Exhaust Tone
- Reduced Interior Resonance
- Recommended For SUV/Trucks/Motorhomes/Tow Vehicles
- Improved HP/TQ and Potential Mileage Improvement
- Race Proven Patented Delta Flow® Technology
- Premium Flowmaster Quality
- 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.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 2003 - Chevrolet Silverado 2500 HD | V | 5967 | 8 Cyl 6.0L | 364 |
- 50 Series™ Big Block Muffler
- 3.0 in. Dual Inlet/3.5 in. Offset 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; 3.0 in. Dual Inlet/3.5 in. Offset Outlet; Case Dimensions 5 in. x 12 in. x 22 in.; 28 in. Overall Length; Aluminized Steel;
- 50 Series(TM) Big Block Muffler
- Product Attributes:
- Tip Quantity: 0
- Automotive Item Grade: High Performance
- Muffler Type: Reflection
- Outlet Connection Type: Pipe
- Outlet Position: Offset
- Sound Level: Mild
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 12.000 In.
- Muffler Series: 50 Series Big Block
- Inlet Position: Dual
- Inlet Connection Type: Pipe
-
Features:
- Durable Fully Welded 16ga Aluminized Steel
- 3 Year Limited Warranty
- Stock to Mild Exterior Exhaust Tone
- Reduced Interior Resonance
- Improved HP/TQ and Potential Mileage Improvement
- Race Proven Patented Delta Flow® Technology
- Premium Flowmaster Quality
- Recommended For SUV/Trucks/Motorhomes/Tow Vehicles
- Minimal Interior Resonance
- 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.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 2003 - Chevrolet Silverado 1500 HD | V | 5967 | 8 Cyl 6.0L | 364 |
- 50 Series™ SUV Muffler
- 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 17 in.; 23 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required
- 50 Series™ SUV Muffler; 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 17 in.; 23 in. Overall Length; Aluminized Steel;
- 50 Series(TM) SUV Muffler
- Product Attributes:
- Tip Quantity: 0
- Automotive Item Grade: High Performance
- Muffler Type: Reflection
- Outlet Connection Type: Pipe
- Outlet Position: Offset
- Sound Level: Mild
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 10.000 In.
- Muffler Series: Super 50 Series
- Inlet Position: Center
- Inlet Connection Type: Pipe
-
Features:
- Durable Fully Welded 16ga Aluminized Steel
- 3 Year Limited Warranty
- Mild to Moderate Exterior Exhaust Tone
- Minimal Interior Resonance
- Excellent Choice for Large Displacement Vehicles
- Improved HP/TQ and Potential Mileage Improvement
- Race Proven Patented Delta Flow® Technology
- Premium Flowmaster Quality
- The Super 50 series muffler is a larger version of Flowmaster's 50 series Delta Flow(R) muffler. Originally designed for trucks and SUV's, it is also well suited to muscle car and high performance applications. In addition, the larger case size significantly reduces interior resonance and provides a deep, rich tone along with mileage and power gains. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Sub Model | CID |
|---|---|---|---|---|---|
| 2003 - Chevrolet Silverado 1500 | V | 5328 | 8 Cyl 5.3L | WT | 325 |
- 3.0 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; 3.0 in. Dual Inlet/2.5 in. Dual Outlet; Case Dimensions 5 in. x 12 in. x 22 in.; 28 in. Overall Length; Aluminized Steel;
- 50 Series™ Big Block Muffler
- Product Attributes:
- Tip Quantity: 0
- Automotive Item Grade: High Performance
- Muffler Type: Reflection
- Outlet Connection Type: Pipe
- Outlet Position: Dual
- Sound Level: Mild
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 12.000 In.
- Muffler Series: 50 Series Big Block
- Outlet Outside Diameter: 2.500 In.
- Inlet Position: Dual
- Inlet Connection Type: Pipe
-
Features:
- Durable Fully Welded 16ga Aluminized Steel
- 3 Year Limited Warranty
- Stock to Mild Exterior Exhaust Tone
- Reduced Interior Resonance
- Recommended For SUV/Trucks/Motorhomes/Tow Vehicles
- Improved HP/TQ and Potential Mileage Improvement
- Race Proven Patented Delta Flow® Technology
- Premium Flowmaster Quality
- 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.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 2003 - Chevrolet Silverado 2500 HD | V | 5967 | 8 Cyl 6.0L | 364 |
- 3.0 in. Dual Inlet/3.5 in. Offset 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; 3.0 in. Dual Inlet/3.5 in. Offset Outlet; Case Dimensions 5 in. x 12 in. x 22 in.; 28 in. Overall Length; Aluminized Steel;
- 50 Series™ Big Block Muffler
- Product Attributes:
- Tip Quantity: 0
- Automotive Item Grade: High Performance
- Muffler Type: Reflection
- Outlet Connection Type: Pipe
- Outlet Position: Offset
- Sound Level: Mild
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 12.000 In.
- Muffler Series: 50 Series Big Block
- Inlet Position: Dual
- Inlet Connection Type: Pipe
-
Features:
- Durable Fully Welded 16ga Aluminized Steel
- 3 Year Limited Warranty
- Stock to Mild Exterior Exhaust Tone
- Reduced Interior Resonance
- Improved HP/TQ and Potential Mileage Improvement
- Race Proven Patented Delta Flow® Technology
- Premium Flowmaster Quality
- Recommended For SUV/Trucks/Motorhomes/Tow Vehicles
- Minimal Interior Resonance
- 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.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 2003 - Chevrolet Silverado 2500 HD | V | - | 8 Cyl 8.1L | 496 |
- 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 17 in.; 23 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required
- 50 Series™ SUV Muffler; 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 17 in.; 23 in. Overall Length; Aluminized Steel;
- 50 Series™ SUV Muffler
- Product Attributes:
- Tip Quantity: 0
- Automotive Item Grade: High Performance
- Muffler Type: Reflection
- Outlet Connection Type: Pipe
- Outlet Position: Offset
- Sound Level: Mild
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 10.000 In.
- Muffler Series: Super 50 Series
- Inlet Position: Center
- Inlet Connection Type: Pipe
-
Features:
- Durable Fully Welded 16ga Aluminized Steel
- 3 Year Limited Warranty
- Mild to Moderate Exterior Exhaust Tone
- Minimal Interior Resonance
- Excellent Choice for Large Displacement Vehicles
- Improved HP/TQ and Potential Mileage Improvement
- Race Proven Patented Delta Flow® Technology
- Premium Flowmaster Quality
- The Super 50 series muffler is a larger version of Flowmaster's 50 series Delta Flow(R) muffler. Originally designed for trucks and SUV's, it is also well suited to muscle car and high performance applications. In addition, the larger case size significantly reduces interior resonance and provides a deep, rich tone along with mileage and power gains. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Sub Model | CID |
|---|---|---|---|---|---|
| 2003 - Chevrolet Suburban 1500 | V | 5328 | 8 Cyl 5.3L | LS | 325 |
- 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 22 in.; 28 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required
- 70 Series™ Big Block II Muffler; 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 22 in.; 28 in. Overall Length; Aluminized Steel;
- 70 Series™ Big Block II Muffler
- Product Attributes:
- Tip Quantity: 0
- Automotive Item Grade: High Performance
- Muffler Type: Reflection
- Outlet Connection Type: Pipe
- Outlet Position: Offset
- Sound Level: Mild
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 10.000 In.
- Muffler Series: 70 Series Big Block
- Inlet Position: Center
- Inlet Connection Type: Pipe
-
Features:
- Durable Fully Welded 16ga Aluminized Steel
- 3 Year Limited Warranty
- Stock to Mild Exterior Exhaust Tone
- Minimal Interior Resonance
- Recommended For SUV/Trucks/Motorhomes/Tow Vehicles
- Improved HP/TQ and Potential Mileage Improvement
- Race Proven Patented Delta Flow® Technology
- Premium Flowmaster Quality
- The 70 series utilizes Flowmaster's Delta Flow(R) technology and an enlarged case for improved sound control along with mileage and power gains. Perfect for use on trucks, SUV's, RVs, tow vehicles and high performance street cars where space allows. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Sub Model | CID |
|---|---|---|---|---|---|
| 2003 - Chevrolet Silverado 1500 | V | 5328 | 8 Cyl 5.3L | LT | 325 |
- 70 Series™ Big Block II Muffler
- 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 22 in.; 28 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required
- 70 Series™ Big Block II Muffler; 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 22 in.; 28 in. Overall Length; Aluminized Steel;
- 70 Series(TM) Big Block II Muffler
- Product Attributes:
- Tip Quantity: 0
- Automotive Item Grade: High Performance
- Muffler Type: Reflection
- Outlet Connection Type: Pipe
- Outlet Position: Offset
- Sound Level: Mild
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 10.000 In.
- Muffler Series: 70 Series Big Block
- Inlet Position: Center
- Inlet Connection Type: Pipe
-
Features:
- Durable Fully Welded 16ga Aluminized Steel
- 3 Year Limited Warranty
- Stock to Mild Exterior Exhaust Tone
- Minimal Interior Resonance
- Recommended For SUV/Trucks/Motorhomes/Tow Vehicles
- Improved HP/TQ and Potential Mileage Improvement
- Race Proven Patented Delta Flow® Technology
- Premium Flowmaster Quality
- The 70 series utilizes Flowmaster's Delta Flow(R) technology and an enlarged case for improved sound control along with mileage and power gains. Perfect for use on trucks, SUV's, RVs, tow vehicles and high performance street cars where space allows. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Sub Model | CID |
|---|---|---|---|---|---|
| 2003 - Chevrolet Suburban 1500 | V | 5328 | 8 Cyl 5.3L | LT | 325 |
- Single; Dual Same Side Exit; Dual RH Before Rear Axle; Includes 2.5in. Tailpipes/Super 40 Series(TM) Muffler/3in. Embossed Stainless Tips;50 State Legal / California Emissions Compliant
- American Thunder Muscle Truck Exhaust System; Single; Dual Same Side Exit; Dual RH Before Rear Axle; Includes 2.5in. Tailpipes/Super 40 Series™ Muffler/3in. Embossed Stainless Tips;
- American Thunder Muscle Truck Exhaust System
- Product Attributes:
- Tip Quantity: 2
- Tubing Diameter: 2.500 In.
- Exhaust Type: Single
- Sound Level: Aggressive
- WARNING CA Proposition 65: Yes
- Exhaust Series: American Thunder
- Heat Shield Attached: No
- Exit Style: Straight
- Muffler Series: Super 40 Series
- Inlet Inside Diameter: 2.500 In.
- Outlet Outside Diameter: 2.500 In.
- Tail Pipe Diameter: 2.500 In.
- Exit Position: Dual Same Side
- Muffler Count: 1
- System Type: Cat Back
- Muffler Part Number: Kit Only
-
Features:
- Mandrel Bent 16ga Aluminized Tubing
- Aggressive Exterior Exhaust Tone
- Moderate to Aggressive Exterior Exhaust Tone
- Includes Hangers and Hardware For Easy Installation
- Connects After Factory Catalytic Converter
- Dual Out Same Side Exit
- Dyno Tuned for Maximum Performance
- Premium Flowmaster Quality
- For the person who wants the aggressive look of a NASCAR race truck along with all the benefits that a Flowmaster Cat-back exhaust system provides. D.O.S.S. (Dual out same side) systems are the perfect choice. The American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The exhaust system is constructed from 3.00-inch mandrel-bent aluminized steel tubing flowing into a Super 40 Series performance muffler for a deep powerful sound, then is finished off with dual 2.50-inch tailpipes and a pair of 3.00-inch polished stainless steel tips. Includes all necessary hardware, instructions and is covered by our 3-year Limited Warranty. For those who prefer full stainless steel construction and a Lifetime Limited Warranty, check out part# 817395. Notes: Fits both 2/4 wheel drive models with extended cab/short bed configuration on a 143.5-inch wheelbase.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
This Part Fits the Following OEM/Substitute Numbers:
15842, 65518, 817395
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Bed Length | Sub Model | Body | CID |
|---|---|---|---|---|---|---|---|
| 2003 - Chevrolet Silverado 1500 | V | 5328 | 8 Cyl 5.3L | 78.0 | WT | Extended Cab Pickup | 325 |
- Single; Single Side Exit; Includes 3.5 in. Tubing/50 Series(TM) Big Block Muffler/4 in. Logo Embossed Stainless Tip;50 State Legal / California Emissions Compliant Factory Dual Inlet Muffler Only
- American Thunder Cat Back Exhaust System; Single; Single Side Exit; Includes 3.5 in. Tubing/50 Series™ Big Block Muffler/4 in. Logo Embossed Stainless Tip;
- American Thunder Cat Back Exhaust System
- Product Attributes:
- Tip Quantity: 1
- Exhaust Type: Single
- Sound Level: Aggressive
- WARNING CA Proposition 65: Yes
- Exhaust Series: American Thunder
- Heat Shield Attached: No
- Exit Style: Straight
- Muffler Series: 50 Series Big Block
- Inlet Inside Diameter: N/a
- Exit Position: Single Side
- Muffler Count: 1
- System Type: Cat Back
- Inlet Position: Dual
- Muffler Part Number: Kit Only
-
Features:
- Mandrel Bent 16ga Aluminized Tubing
- Moderate Exterior Exhaust Tone
- Includes Hangers And Hardware For Easy Installation
- Dyno Tuned for Maximum Performance
- Premium Flowmaster Quality
- 3 Year Limited Warranty
- Made in the USA
- For the person who wants a subtle custom appearance with all the benefits that a Flowmaster Cat-back exhaust system provides. This American Thunder system for the 2001-2006 (2007 Classic) Chevrolet Silverado, GMC Sierra 2500HD/3500HD with 6.0L or 8.1L engine with dual inlet muffler, delivers a moderate interior tone with a deep powerful exterior tone and is suited to the enthusiast who wants their performance to be heard. The system attaches to the back of the catalytic converter with a dual inlet 50 Series Big Block muffler for a deep powerful sound without being obnoxious. Includes a large custom formed aluminum heat shield with stainless clamps and easily attaches directly to the muffler body. The custom bent 3.50-inch aluminized steel tailpipe uses the factory hanger locations for an easy installation and exits out behind the right side rear wheel which is ideal for towing. The tailpipe is finished off with a large 4.00-inch polished 304 stainless steel tip embossed with the Flowmaster logo. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts, hardware and easy to follow instructions for a trouble free installation. Covered by our 3-year Limited Warranty. Check out system #817328 if you prefer a Stainless Steel exhaust system that is covered with a Lifetime Limited Warranty.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
This Part Fits the Following OEM/Substitute Numbers:
14294, 15789, 15829, 17800769, 39378, 615549, 817328
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Bed Length | Body | CID |
|---|---|---|---|---|---|---|
| 2003 - Chevrolet Silverado 3500 HD | V | 5967 | 8 Cyl 6.0L | 96.0 | Extended Cab Pickup | 364 |
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