Pontiac Exhaust Muffler Parts

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1975 Pontiac Grand LeMans Exhaust Muffler 8 Cyl 5.7L Flowmaster

2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; 409 Stainless Steel
40 Series™ Muffler; 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; 409 Stainless Steel;
40 Series™ Muffler
Product Attributes:
- Tip Quantity: 0
- Muffler Type: Reflection
- Outlet Position: Center
- Inlet Diameter: 2.250 In.
- Sound Level: Aggressive
- WARNING CA Proposition 65: Yes
- Fitment: Universal
- Body Width: 9.750 In.
- Inlet Type: Single Offset
- Body Length: 13.000 In.
- Inlet Outside Diameter: 2.250 In.
- Inlet Connection Type: Pipe
- Outlet Diameter: 2.500 In.
- Mount Type: Uses New Hangers (not Included)
- Automotive Item Grade: High Performance
- California Proposition 65 Chemical Name 2: Chromium (hexavalent Compounds)
- Outlet Connection Type: Pipe
- California Proposition 65 Chemical Name 1: Nickel (metallic)
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
- Muffler Series: 40 Series
- Overall Length: 19.000 In.
- Inlet Inside Diameter: 2.250 In.
- Outlet Outside Diameter: 2.250 In.
- Main Piping Diameter: Oem
- Shape: Oval
- Inlet Position: Offset
- Outlet Type: Single Center Outlet
Features:
- 409 Stainless Steel
- Limited Lifetime 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
The Original 40 series muffler delivers an aggressive exterior and interior tone. If youre looking for that original Flowmaster sound this is the muffler is for you. 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
1975 - Pontiac Grand LeMans	V	5733	8 Cyl 5.7L	350

2 In Stock

$183.87 USD

$220.64 USD

Brand	Flowmaster
Part #	F138042441
Condition	New
Warehouse	B

1975 Pontiac Grand LeMans Exhaust Muffler 8 Cyl 5.7L Flowmaster

2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required
Super 44™ Delta Flow Muffler; 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; 409 Stainless Steel;
Super 44™ Delta Flow Muffler
Product Attributes:
- Tip Quantity: 0
- Muffler Type: Reflection
- Outlet Position: Center
- Inlet Diameter: 2.250 In.
- Sound Level: Aggressive
- WARNING CA Proposition 65: Yes
- Fitment: Universal
- Body Width: 9.750 In.
- Inlet Type: Single Offset
- Body Length: 13.000 In.
- Inlet Outside Diameter: 2.250 In.
- Inlet Connection Type: Pipe
- Outlet Diameter: 2.500 In.
- Mount Type: Uses New Hangers (not Included)
- Automotive Item Grade: High Performance
- California Proposition 65 Chemical Name 2: Chromium (hexavalent Compounds)
- Outlet Connection Type: Pipe
- California Proposition 65 Chemical Name 1: Nickel (metallic)
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
- Muffler Series: Super 44 Series
- Overall Length: 19.000 In.
- Inlet Inside Diameter: 2.250 In.
- Outlet Outside Diameter: 2.250 In.
- Main Piping Diameter: Oem
- Shape: Oval
- Inlet Position: Offset
- Outlet Type: Single Center Outlet
Features:
- Durable Fully Welded 16ga Stainless Steel
- Limited Lifetime Warranty
- Deep Aggressive Exhaust Note
- Noticeable Interior Resonance
- Recent Two Chamber Improvement
- Race Proven Patented Delta Flow® Technology
- No Internal Packing To Blowout
- Premium Flowmaster Quality
Flowmasters Super 44 muffler uses the same Delta Flow technology found in our larger Super 40 mufflers. The Super 44 delivers a rich powerful tone and are the most aggressive, highest performing street muffler weve ever built in a four inch case. 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:

11225, 11365, 12225, 13215, 13235, 14225, 14325, 14362

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1975 - Pontiac Grand LeMans	V	5733	8 Cyl 5.7L	350

4 In Stock

$185.43 USD

$222.52 USD

Brand	Flowmaster
Part #	F13842446
Condition	New
Warehouse	B

1975 Pontiac LeMans Exhaust Muffler 8 Cyl 5.7L Flowmaster

2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required
40 Series™ Muffler; 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel;
40 Series™ Muffler
Product Attributes:
- Tip Quantity: 0
- Muffler Type: Reflection
- Outlet Position: Center
- Inlet Diameter: 2.250 In.
- Sound Level: Aggressive
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 9.750 In.
- Inlet Type: Single Offset
- Body Length: 13.000 In.
- Inlet Outside Diameter: 2.250 In.
- Inlet Connection Type: Pipe
- Outlet Diameter: 2.500 In.
- Mount Type: Uses New Hangers (not Included)
- Automotive Item Grade: High Performance
- Outlet Connection Type: Pipe
- Muffler Series: 40 Series
- Overall Length: 19.000 In.
- Inlet Inside Diameter: 2.250 In.
- Outlet Outside Diameter: 2.250 In.
- Main Piping Diameter: Oem
- Shape: Oval
- Inlet Position: Offset
- Outlet Type: Single Center Outlet
Features:
- Durable Fully Welded 16ga Aluminized Steel
- Aggressive Exterior Exhaust Tone
- Noticeable Interior Resonance
- Excellent Street/Strip And Off Road Application
The Original 40 series muffler delivers an aggressive exterior and interior tone. If youre looking for that original Flowmaster sound this is the muffler is for you. 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
1975 - Pontiac LeMans	V	5733	8 Cyl 5.7L	350

56 In Stock

$148.79 USD

$178.55 USD

Brand	Flowmaster
Part #	F1342441
Condition	New
Warehouse	B

1975 Pontiac LeMans Exhaust Muffler 8 Cyl 5.7L Flowmaster

2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required
Super 44™ Delta Flow Muffler; 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel;
Super 44™ Delta Flow Muffler
Product Attributes:
- Tip Quantity: 0
- Muffler Type: Reflection
- Outlet Position: Center
- Inlet Diameter: 2.250 In.
- Sound Level: Aggressive
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 9.750 In.
- Inlet Type: Single Offset
- Body Length: 13.000 In.
- Inlet Outside Diameter: 2.250 In.
- Inlet Connection Type: Pipe
- Outlet Diameter: 2.500 In.
- Mount Type: Uses New Hangers (not Included)
- Automotive Item Grade: High Performance
- Outlet Connection Type: Pipe
- Muffler Series: Super 44 Series
- Overall Length: 19.000 In.
- Inlet Inside Diameter: 2.250 In.
- Outlet Outside Diameter: 2.250 In.
- Main Piping Diameter: Oem
- Shape: Oval
- Inlet Position: Offset
- Outlet Type: Single Center Outlet
Features:
- Durable Fully Welded 16ga Aluminized Steel
- 3 Year Limited Warranty
- Deep Aggressive Exhaust Note
- Noticeable Interior Resonance
- Recent Two Chamber Improvement
- Race Proven Patented Delta Flow® Technology
- No Internal Packing To Blowout
- Premium Flowmaster Quality
Flowmasters Super 44 muffler uses the same Delta Flow technology found in our larger Super 40 mufflers. The Super 44 delivers a powerful rich tone and is the most aggressive, deepest sounding, highest performing four-inch case street muffler weve ever built! 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
1975 - Pontiac LeMans	V	5733	8 Cyl 5.7L	350

3 In Stock

$166.04 USD

$199.25 USD

Brand	Flowmaster
Part #	F13942446
Condition	New
Warehouse	B

1975 Pontiac LeMans Exhaust Muffler 8 Cyl 5.7L Flowmaster

2.25 Offset In/2.25 Center Out; Clamp On; 409 Stainless Steel Not Direct Fit-Some Adaptation Required
FlowFX Muffler; 2.25 Offset In/2.25 Center Out; Clamp On; 409 Stainless Steel;
FlowFX Muffler
Product Attributes:
- Tip Quantity: 0
- Muffler Overall Length: 20.000 In.
- Muffler Type: Absorption
- Outlet Position: Center
- Sound Level: Moderate
- WARNING CA Proposition 65: Yes
- Muffler Body Length: 14.000 In.
- Outlet Quantity: 1
- Body Length: 14.000 In.
- Inlet Outside Diameter: 2.250 In.
- Inlet Connection Type: Clamp-on
- Muffler Outlet Diameter: 2.250 In.
- California Proposition 65 Chemical Name 2: Chromium (hexavalent Compounds)
- Outlet Connection Type: Clamp-on
- California Proposition 65 Chemical Name 1: Nickel (metallic)
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
- Muffler Body Width: 9.000 In.
- Muffler Series: Flow Fx
- Overall Length: 20.000 In.
- Inlet Inside Diameter: 2.250 In.
- Muffler Inlet Diameter: 2.250 In.
- Main Piping Diameter: 2.250 In.
- Shape: Oval
- Inlet Quantity: 1
- Muffler Body Shape: Oval
- Inlet Position: Offset
- Outlet Type: Single Outlet
Features:
- Not A Direct Fit
- Moderate Sound
- Straight Through Style
- Fully Welded Steel Case
Flowmasters FlowFX series mufflers deliver a moderate performance tone for the enthusiast looking for an exhaust note that is different from the chambered muffler sound. The interior features a large 3.00-inch straight-through stainless steel perforated core, surrounded with high-temperature sound absorption materials delivering a deep traditional mellow tone. The internal flow design is reversible, so the muffler can be installed in either direction to best suit the vehicle application and offsets needed. Features include fully MIG-welded bright 409 stainless steel construction with the FlowFX logo embossed on both sides of the case. The FlowFX line of mufflers is perfect for the person looking for a show quality performance muffler at an economical price point and in a compact sized case.

Additional Fitment Information:

Vehicle	Block	CC	Engine	Sub Model	CID
1975 - Pontiac LeMans	V	5733	8 Cyl 5.7L	Base	350

200 In Stock

$89.25 USD

$107.10 USD

Brand	Flowmaster
Part #	F1371225
Condition	New
Warehouse	B

1975 Pontiac Grand LeMans Exhaust Muffler 8 Cyl 5.7L Flowmaster

2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required
50 Series™ Delta Flow Muffler; 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; Aluminized Steel;
50 Series™ Delta Flow Muffler
Product Attributes:
- Tip Quantity: 0
- Muffler Type: Reflection
- Outlet Position: Center
- Inlet Diameter: 2.250 In.
- Sound Level: Moderate
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 9.750 In.
- Inlet Type: Single Offset
- Body Length: 17.000 In.
- Inlet Outside Diameter: 2.250 In.
- Inlet Connection Type: Pipe
- Outlet Diameter: 2.500 In.
- Mount Type: Uses New Hangers (not Included)
- Automotive Item Grade: High Performance
- Outlet Connection Type: Pipe
- Muffler Series: 50 Series Delta Flow
- Overall Length: 23.000 In.
- Inlet Inside Diameter: 2.250 In.
- Outlet Outside Diameter: 2.250 In.
- Main Piping Diameter: 2.250 In.
- Shape: Oval
- Inlet Position: Offset
- Outlet Type: Single Center Outlet
Features:
- Durable Fully Welded 16ga Aluminized Steel
- 3 Year Limited Warranty
- Mild to Moderate Exterior Exhaust Tone
- Minimal Interior Resonance
- Excellent Choice For Street Rods Cars and Trucks
- Improved HP/TQ and Potential Mileage Improvement
- Race Proven Patented Delta Flow® Technology
- Premium Flowmaster Quality
The three chamber design utilizes Flowmasters Delta Flow technology along with an internal tuning chamber to reduce sound inside the vehicle. Provides the same performance and exterior tone characteristics as the two chamber, but with less interior resonance. 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
1975 - Pontiac Grand LeMans	V	5733	8 Cyl 5.7L	350

13 In Stock

$230.67 USD

$276.80 USD

Brand	Flowmaster
Part #	F13942451
Condition	New
Warehouse	B

1975 Pontiac Firebird Exhaust Muffler 8 Cyl 5.7L Flowmaster

2.5 in. Offset Inlet/Dual Outlet; Case Dimensions 4 in. x 9.5 in. x 15 in.; 21 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required
80 Series™ Cross-Flow Muffler; 2.5 in. Offset Inlet/Dual Outlet; Case Dimensions 4 in. x 9.5 in. x 15 in.; 21 in. Overall Length; 409 Stainless Steel;
80 Series™ Cross-Flow Muffler
Product Attributes:
- Tip Quantity: 0
- Muffler Type: Reflection
- Outlet Position: Dual
- Inlet Diameter: 2.500 In.
- Sound Level: Aggressive
- WARNING CA Proposition 65: Yes
- Fitment: Universal
- Body Width: 9.750 In.
- Inlet Type: Single Offset
- Body Length: 15.000 In.
- Inlet Outside Diameter: 2.500 In.
- Inlet Connection Type: Pipe
- Outlet Diameter: 2.500 In.
- Mount Type: Uses Factory Hangers
- Automotive Item Grade: High Performance
- California Proposition 65 Chemical Name 2: Chromium (hexavalent Compounds)
- Outlet Connection Type: Pipe
- California Proposition 65 Chemical Name 1: Nickel (metallic)
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
- Muffler Series: 80 Series Crossflow
- Overall Length: 21.000 In.
- Inlet Inside Diameter: 2.500 In.
- Outlet Outside Diameter: 2.500 In.
- Main Piping Diameter: 2.500 In.
- Shape: Oval
- Inlet Position: Offset
- Outlet Type: Dual Outlet
Features:
- Durable Fully Welded 16ga Aluminized Steel
- Limited Lifetime Warranty
- Aggressive And Powerful Exterior Exhaust Tone
- Notable Interior Resonance
- 1984 to 2002 Camaro/Firebird/Buick Grand National
- Cross Flow Applications
- The Original Two Chamber Design
- Premium Flowmaster Quality
The 80 series is a cross-flow design for applications where the muffler is mounted transversely behind the rear end. Delivering an aggressive muscle car sound both inside and outside the vehicle, this is an excellent replacement for Camaros and Firebirds with transverse mufflers. 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:

12265, 12266, 17266, 42583

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1975 - Pontiac Firebird	V	5733	8 Cyl 5.7L	350

4 In Stock

$261.93 USD

$314.32 USD

Brand	Flowmaster
Part #	F13842583
Condition	New
Warehouse	B

1982 Pontiac Firebird Exhaust Muffler 6 Cyl 2.8L Flowmaster

2.5 in. Offset Inlet/Dual Outlet; Case Dimensions 4 in. x 9.75 in. x 15 in.; 21 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required
80 Series™ Cross-Flow Muffler; 2.5 in. Offset Inlet/Dual Outlet; Case Dimensions 4 in. x 9.75 in. x 15 in.; 21 in. Overall Length; Aluminized Steel;
80 Series™ Cross-Flow Muffler
Product Attributes:
- Tip Quantity: 0
- Muffler Type: Reflection
- Outlet Position: Dual
- Inlet Diameter: 2.500 In.
- Sound Level: Aggressive
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 9.750 In.
- Inlet Type: Single Offset
- Body Length: 15.000 In.
- Inlet Outside Diameter: 2.500 In.
- Inlet Connection Type: Pipe
- Outlet Diameter: 2.500 In.
- Mount Type: Uses New Hangers (not Included)
- Automotive Item Grade: High Performance
- Outlet Connection Type: Pipe
- Muffler Series: 80 Series Crossflow
- Overall Length: 21.000 In.
- Inlet Inside Diameter: 2.500 In.
- Outlet Outside Diameter: 2.500 In.
- Main Piping Diameter: 2.500 In.
- Shape: Oval
- Inlet Position: Offset
- Outlet Type: Dual Opposite End Outlet
Features:
- Durable Fully Welded 16ga Aluminized Steel
- 3 Year Limited Warranty
- Aggressive And Powerful Exterior Exhaust Tone
- Notable Interior Resonance
- Cross Flow Applications
- The Original Two Chamber Design
- Premium Flowmaster Quality
The 80 series is a cross-flow design for applications where the muffler is mounted transversely behind the rear end. Delivering an aggressive muscle car sound both inside and outside the vehicle. 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
1982 - Pontiac Firebird	V	-	6 Cyl 2.8L	173

3 In Stock

$238.76 USD

$286.51 USD

Brand	Flowmaster
Part #	F1342583
Condition	New
Warehouse	B

1976 Pontiac Firebird Exhaust Muffler 8 Cyl 5.7L Flowmaster

2.5 in. Offset Inlet/Opposite Side Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required
50 Series™ Delta Flow Muffler; 2.5 in. Offset Inlet/Opposite Side Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; Aluminized Steel;
50 Series™ Delta Flow Muffler
Product Attributes:
- Tip Quantity: 0
- Muffler Type: Reflection
- Outlet Position: Offset
- Inlet Diameter: 2.500 In.
- Sound Level: Moderate
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 9.750 In.
- Inlet Type: Single Offset
- Body Length: 17.000 In.
- Inlet Outside Diameter: 2.500 In.
- Inlet Connection Type: Pipe
- Outlet Diameter: 2.500 In.
- Mount Type: Uses New Hangers (not Included)
- Automotive Item Grade: High Performance
- Outlet Connection Type: Pipe
- Muffler Series: 50 Series Delta Flow
- Overall Length: 23.000 In.
- Inlet Inside Diameter: 2.500 In.
- Outlet Outside Diameter: 2.500 In.
- Main Piping Diameter: 2.500 In.
- Shape: Oval
- Inlet Position: Offset
- Outlet Type: Single Offset Outlet
Features:
- Durable Fully Welded 16ga Aluminized Steel
- 3 Year Limited Warranty
- Mild to Moderate Exterior Exhaust Tone
- Minimal Interior Resonance
- Excellent Choice For Street Rods Cars and Trucks
- Improved HP/TQ and Potential Mileage Improvement
- Race Proven Patented Delta Flow® Technology
- Premium Flowmaster Quality
The three chamber design utilizes Flowmasters Delta Flow technology along with an internal tuning chamber to reduce sound inside the vehicle. Provides the same performance and exterior tone characteristics as the two chamber, but with less interior resonance. 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
1976 - Pontiac Firebird	V	5733	8 Cyl 5.7L	Base	350

10 In Stock

$230.67 USD

$276.80 USD

Brand	Flowmaster
Part #	F13942553
Condition	New
Warehouse	B

2009 Pontiac G8 Exhaust Muffler 8 Cyl 6.2L Borla

CrateMuffler®
2.5 in. In/Out; 14 in. L x 4.35 in. W x 9 in. H; Offset/Center; S-Type Sound Level
CrateMuffler®; 2.5 in. In/Out; 14 in. L x 4.35 in. W x 9 in. H; Offset/Center; For LS3 Crate Engines; S-Type Sound Level; T-304 Stainless Steel;
CrateMuffler(TM)
Product Attributes:
- Tip Quantity: 0
- Outlet Position: Center
- WARNING CA Proposition 65: Yes
- Body Width: 4.350 In.
- Overall Length: 14.000 In.
- Inlet Inside Diameter: 2.500 In.
- Body Height: 9.000 In.
- Outlet Outside Diameter: 2.500 In.
- Main Piping Diameter: 2.500 In.
- Shape: Rectangular
- Muffler Count: 1
- Inlet Type: Single Center
- Inlet Position: Offset
- Body Length: 14.000 In.
- Inlet Outside Diameter: 2.500 In.
- Inlet Connection Type: Pipe
- Outlet Type: Single Center Outlet
Features:
- Choose Your Sound
- Distinctive Mounting Endplate Bracket
- Aircraft-Grade Brushed Finish T-304 Stainless Steel
- Million Mile Warranty
- Made In The USA
BORLA(R)'s CrateMuffler(R) is the world's first muffler purpose-built to optimize the sound & power of crate and custom built motors. The mufflers are directional. The outlet can be identified by the mounting bracket welded to the endcap. The directional design provides custom sound, tuned for each engine family and will dramatically reduce, or eliminate drone on specified applications. Built from premium T-304 stainless steel, superior to T-400 series (such as 409), to give you the absolute best in performance and durability. Precision computer numerical control (CNC) manufacturing ensures an accurate fit and best of all, BORLA(R) stands behind every CrateMuffler(R) with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.