2003 GMC Sierra 2500 HD Exhaust Muffler Parts
Choose your Engine for your 2003 GMC Sierra 2500 HD
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- 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 - GMC Sierra 2500 HD | V | - | 8 Cyl 8.1L | 496 |
- 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 - GMC Sierra 2500 HD | V | - | 8 Cyl 8.1L | 496 |
- Super 40™ Delta Flow Muffler
- 3.0 in. Offset Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 13.5 in.; 17.5 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required
- Super 40™ Delta Flow Muffler; 3.0 in. Offset Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 13.5 in.; 17.5 in. Overall Length; 409 Stainless Steel;
- Super 40(TM) Delta Flow Muffler
- Product Attributes:
- Tip Quantity: 0
- Automotive Item Grade: High Performance
- Muffler Type: Reflection
- California Proposition 65 Chemical Name 2: Chromium (hexavalent Compounds)
- Outlet Connection Type: Pipe
- California Proposition 65 Chemical Name 1: Nickel (metallic)
- Outlet Position: Offset
- Sound Level: Aggressive
- WARNING CA Proposition 65: Yes
- Fitment: Universal
- Body Width: 10.000 In.
- Muffler Series: Super 40 Series
- Inlet Position: Offset
- Inlet Connection Type: Pipe
-
Features:
- Durable Fully Welded 16ga Stainless Steel
- Limited Lifetime Warranty
- Deep Aggressive to Moderate Exhaust Note
- Moderate Interior Resonance
- Excellent Performance On High Horsepower Vehicles
- Race Proven Patented Delta Flow® Technology
- No Internal Packing To Blowout
- Premium Flowmaster Quality
- Developed from our Top Ten race muffler lineup for use on the street/strip, the Super 40(R) features Flowmaster's Delta Flow(R) technology. It's larger case profile provides the best of both worlds of performance and sound, especially on forced induction and high horsepower vehicles. The Super 40 has that deep powerful sound of the Original 40 series but with all the benefits of performance and low interior resonance from the Delta Flow(R) technology. Constructed of 16 gauge 409S stainless 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 - GMC Sierra 2500 HD | V | 6599 | 8 Cyl 6.6L | 403 |
- 3.0 in. Offset Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 13.5 in.; 17.5 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required
- Super 40™ Delta Flow Muffler; 3.0 in. Offset Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 13.5 in.; 17.5 in. Overall Length; 409 Stainless Steel;
- Super 40™ Delta Flow Muffler
- Product Attributes:
- Tip Quantity: 0
- Automotive Item Grade: High Performance
- Muffler Type: Reflection
- Outlet Connection Type: Pipe
- Outlet Position: Offset
- Sound Level: Aggressive
- WARNING CA Proposition 65: Yes
- Fitment: Universal
- Body Width: 10.000 In.
- Muffler Series: Super 40 Series
- Inlet Position: Offset
- Inlet Connection Type: Pipe
-
Features:
- Durable Fully Welded 16ga Stainless Steel
- Limited Lifetime Warranty
- Deep Aggressive to Moderate Exhaust Note
- Moderate Interior Resonance
- Excellent Performance On High Horsepower Vehicles
- Race Proven Patented Delta Flow® Technology
- No Internal Packing To Blowout
- Premium Flowmaster Quality
- Developed from our Top Ten race muffler lineup for use on the street/strip, the Super 40(R) features Flowmaster's Delta Flow(R) technology. It's larger case profile provides the best of both worlds of performance and sound, especially on forced induction and high horsepower vehicles. The Super 40 has that deep powerful sound of the Original 40 series but with all the benefits of performance and low interior resonance from the Delta Flow(R) technology. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
This Part Fits the Following OEM/Substitute Numbers:
953048
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 2003 - GMC Sierra 2500 HD | V | 6599 | 8 Cyl 6.6L | 403 |
- MSL Maxim
- Extended Cab, Calif, 6.5' Bed, Inc. Exhaust Pipe, Muffler, Converter & Tail Pipe
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 2003 - GMC Sierra 2500 HD | V | 5967 | 8 Cyl 6.0L | 364 |
- DIRECT FIT MSL/MAXIMUM Muffler OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
- DIRECT FIT MSL/MAXIMUM Muffler
- Product Attributes:
- Muffler Type: Baffled
- Series: Msl
- Grade Type: Standard Replacement
- Sound Level: Oe Comparable
- Heat Shield Attached: No
- Tunable: No
- Body Width: 11.500
- Inlet Inside Diameter: 3.000
- Body Height: 8.500
- Body Material: Aluminized Steel
- Boxed: Yes
- Outlet Quantity: 1
- Inlet Quantity: 2
- Package Material: Corrugated Cardboard
- Body Length: 24.000
- Package Type: Box
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Wheel FeedBase | Drive Type | CID |
|---|---|---|---|---|---|---|
| 2003 - GMC Sierra 2500 HD | V | - | 8 Cyl 8.1L | 153.0 | 4WD | 496 |
- 3.5 in. Offset Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 18 in.; 24 in. Overall Length; Aluminized Steel
- 50 Series™ Heavy Duty Muffler; 3.5 in. Offset Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 18 in.; 24 in. Overall Length; Aluminized Steel;
- 50 Series™ Heavy Duty Muffler
- Product Attributes:
- Tip Quantity: 0
- Automotive Item Grade: High Performance
- Muffler Type: Reflection
- Outlet Connection Type: Pipe
- Outlet Position: Offset
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 10.000 In.
- Inlet Position: Offset
- Muffler Series: 50 Series Hd
- Inlet Connection Type: Pipe
-
Features:
- Durable Fully Welded 16ga Aluminized Steel
- 3 Year Limited Warranty
- Aggressive And Powerful Exterior Exhaust Tone
- Notable Interior Resonance
- Excellent Street/Strip And Off Road Application
- No Internal Packing To Blowout
- The Original Two Chamber Design
- Premium Flowmaster Quality
- Improved HP/TQ and Engine Efficiency
- Designed primarily for today's heavy duty gas and diesel trucks, this muffler will deliver improved performance, throttle response and mileage. Featuring a deeper, moderate tone with minimal resonance, it is ideal for trucks with modified engines. 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 - GMC Sierra 2500 HD | V | 6599 | 8 Cyl 6.6L | 403 |
- 50 Series™ Heavy Duty Muffler
- 3.5 in. Offset Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 18 in.; 24 in. Overall Length; Aluminized Steel
- 50 Series™ Heavy Duty Muffler; 3.5 in. Offset Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 18 in.; 24 in. Overall Length; Aluminized Steel;
- 50 Series(TM) Heavy Duty Muffler
- Product Attributes:
- Tip Quantity: 0
- Automotive Item Grade: High Performance
- Muffler Type: Reflection
- Outlet Connection Type: Pipe
- Outlet Position: Offset
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 10.000 In.
- Inlet Position: Offset
- Muffler Series: 50 Series Hd
- Inlet Connection Type: Pipe
-
Features:
- Durable Fully Welded 16ga Aluminized Steel
- 3 Year Limited Warranty
- Aggressive And Powerful Exterior Exhaust Tone
- Notable Interior Resonance
- Excellent Street/Strip And Off Road Application
- No Internal Packing To Blowout
- The Original Two Chamber Design
- Premium Flowmaster Quality
- Improved HP/TQ and Engine Efficiency
- Designed primarily for today's heavy duty gas and diesel trucks, this muffler will deliver improved performance, throttle response and mileage. Featuring a deeper, moderate tone with minimal resonance, it is ideal for trucks with modified engines. 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 - GMC Sierra 2500 HD | V | 6599 | 8 Cyl 6.6L | 403 |
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