1990 GMC Flowmaster Parts


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Flowmaster
  • 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; 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(TM) 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
1990 - GMC S15 V - 6 Cyl 4.3L 262

Flowmaster
  • 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 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(TM) 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
1990 - GMC S15 Jimmy V - 6 Cyl 4.3L 262

Flowmaster
  • 40 Series™ Delta Flow Muffler
  • 2.5 in. Offset Inlet/2.5 in. Opposite Side Offset 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™ Delta Flow Muffler; 2.5 in. Offset Inlet/2.5 in. Opposite Side Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel;
  • 40 Series(TM) Delta Flow Muffler
  • Product Attributes:
    • Tip Quantity: 0
    • Muffler Type: Reflection
    • Outlet Position: Offset
    • 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: 13.000 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: 40 Series Delta Flow
    • Overall Length: 19.000 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
    • Race Proven Patented Delta Flow® Technology
    • Excellent Street/Strip And Off Road Application
    • No Internal Packing To Blow Out
  • This two chamber design incorporates Flowmasters Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over standard 40 series. 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
1990 - GMC K1500 V - 8 Cyl 5.0L 305

Flowmaster
  • 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; 409 Stainless 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; 409 Stainless Steel;
  • 50 Series(TM) 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: Yes
    • 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
    • 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: 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 409 Stainless Steel
    • Limited Lifetime 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 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
1990 - GMC C2500 V - 8 Cyl 5.0L 305

Flowmaster
  • 40 Series™ Muffler
  • 2.5 in. Offset Inlet/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; 2.5 in. Offset Inlet/Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel;
  • 40 Series(TM) Muffler
  • Product Attributes:
    • Tip Quantity: 0
    • Muffler Type: Reflection
    • Outlet Position: Offset
    • 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: 13.000 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: 40 Series
    • Overall Length: 19.000 In.
    • Inlet Inside Diameter: 2.500 In.
    • Outlet Outside Diameter: 2.500 In.
    • Main Piping Diameter: Oem
    • Shape: Oval
    • Inlet Position: Offset
    • Outlet Type: Single Offset Outlet
  • Features:
    • Durable Fully Welded 16ga Aluminized Steel
    • 3 Year Limited Warranty
    • Aggressive And Powerful Exterior Exhaust Tone
    • Notable Interior Resonance
    • No Internal Packing To Blowout
    • The Original Two Chamber Design
    • Premium Flowmaster Quality
    • 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
1990 - GMC K1500 V - 6 Cyl 4.3L 262

Flowmaster
  • Super 40™ Delta Flow Muffler
  • 3.0 in. Offset Inlet/Center Outlet; Case Dimensions 5 in. x 10 in. x 13.5 in.; 19.5 in. Overall Length; Aluminized Steel
  • Super 40™ Delta Flow Muffler; 3.0 in. Offset Inlet/Center Outlet; Case Dimensions 5 in. x 10 in. x 13.5 in.; 19.5 in. Overall Length; Aluminized Steel;
  • Super 40(TM) Delta Flow Muffler
  • Product Attributes:
    • Tip Quantity: 0
    • Outlet Position: Center
    • Sound Level: Aggressive
    • WARNING CA Proposition 65: No
    • Body Width: 10.000 In.
    • Muffler Series: Super 40 Series
    • Overall Length: 19.500 In.
    • Shape: Oval
    • Inlet Type: Single Offset
    • Inlet Position: Offset
    • Body Length: 13.500 In.
    • Outlet Type: Single Center Outlet
  • Features:
    • Durable Fully Welded 16ga Aluminized Steel
    • 3 Year Limited 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
    • Noticeable Interior Resonance
  • The Super 40 features Flowmasters Delta Flow technology. Its larger case profile provides the best of both worlds of performance and sound. 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 technology. 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
1990 - GMC V3500 V - 8 Cyl 5.7L 350

Flowmaster
  • 40 Series™ Muffler
  • 3.0 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; 3.0 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(TM) Muffler
  • Product Attributes:
    • Tip Quantity: 0
    • Automotive Item Grade: High Performance
    • Mount Type: Uses New Hangers (not Included)
    • 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: Center
    • Sound Level: Aggressive
    • WARNING CA Proposition 65: Yes
    • Fitment: Universal
    • Body Width: 9.750 In.
    • WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
    • Muffler Series: 40 Series
    • Overall Length: 19.000 In.
    • Main Piping Diameter: Oem
    • Shape: Oval
    • Inlet Type: Single Offset
    • Inlet Position: Offset
    • Body Length: 13.000 In.
    • Inlet Connection Type: Pipe
    • Outlet Type: Single Center Outlet
  • Features:
    • 412 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
1990 - GMC R1500 Suburban V - 8 Cyl 5.7L 350

Flowmaster
  • 40 Series™ Delta Flow Muffler
  • 3.0 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™ Delta Flow Muffler; 3.0 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel;
  • 40 Series(TM) Delta Flow Muffler
  • Product Attributes:
    • Tip Quantity: 0
    • Automotive Item Grade: High Performance
    • Mount Type: Uses New Hangers (not Included)
    • Muffler Type: Reflection
    • Outlet Connection Type: Pipe
    • Outlet Position: Center
    • Sound Level: Aggressive
    • WARNING CA Proposition 65: No
    • Fitment: Universal
    • Body Width: 9.750 In.
    • Muffler Series: 40 Series Delta Flow
    • Overall Length: 19.000 In.
    • Shape: Oval
    • Inlet Type: Single Offset
    • Inlet Position: Offset
    • Body Length: 13.000 In.
    • Inlet Connection Type: Pipe
    • Outlet Type: Single Center Outlet
  • Features:
    • Durable Fully Welded 16ga Aluminized Steel
    • Race Proven Patented Delta Flow® Technology
    • Excellent Street/Strip And Off Road Application
    • No Internal Packing To Blowout
  • This two chamber design incorporates Flowmasters Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over standard 40 series. 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
1990 - GMC R1500 Suburban V - 8 Cyl 5.7L 350

Flowmaster
  • Super 40™ Delta Flow Muffler
  • 3.0 in. Center Inlet/2.5 in. Dual 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. Center Inlet/2.5 in. Dual 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
    • Mount Type: Uses New Hangers (not Included)
    • 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: Dual
    • Sound Level: Aggressive
    • WARNING CA Proposition 65: Yes
    • Fitment: Universal
    • Body Width: 10.000 In.
    • WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
    • Muffler Series: Super 40 Series
    • Overall Length: 19.500 In.
    • Outlet Outside Diameter: 2.500 In.
    • Shape: Oval
    • Inlet Type: Single Center
    • Inlet Position: Center
    • Body Length: 13.500 In.
    • Inlet Connection Type: Pipe
    • Outlet Diameter: 2.500 In.
    • Outlet Type: Dual Outlet
  • 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
  • The Super 40 features Flowmasters Delta Flow technology. Its larger case profile provides the best of both worlds of performance and sound. The Super 40 has that deep powerful sound of the Original 40 series, but with a deeper tone, and all the benefits of extra performance and low interior resonance from the Delta Flow 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
1990 - GMC K1500 V - 8 Cyl 5.7L 350

Flowmaster
  • 3.0 in. Center Inlet/2.5 in. Dual 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. Center Inlet/2.5 in. Dual 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
    • Mount Type: Uses New Hangers (not Included)
    • 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: Dual
    • Sound Level: Aggressive
    • WARNING CA Proposition 65: Yes
    • Fitment: Universal
    • Body Width: 10.000 In.
    • WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
    • Muffler Series: Super 40 Series
    • Overall Length: 19.500 In.
    • Outlet Outside Diameter: 2.500 In.
    • Shape: Oval
    • Inlet Type: Single Center
    • Inlet Position: Center
    • Body Length: 13.500 In.
    • Inlet Connection Type: Pipe
    • Outlet Diameter: 2.500 In.
    • Outlet Type: Dual Outlet
  • 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
  • The Super 40 features Flowmasters Delta Flow technology. Its larger case profile provides the best of both worlds of performance and sound. The Super 40 has that deep powerful sound of the Original 40 series, but with a deeper tone, and all the benefits of extra performance and low interior resonance from the Delta Flow 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:
9530452

Additional Fitment Information:
Vehicle Block CC Engine CID
1990 - GMC K2500 V - 8 Cyl 5.7L 350
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