1999 GMC Flowmaster Parts
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- 2.5 in. Diameter Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required
- Tailpipe Set; 2.5 in. Diameter Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required;
- Tailpipe Set
- Product Attributes:
- Exhaust Pipe Bend Type: Assorted
- Tubing Diameter: 2.500 In.
- Exit Position: Dual Side
- System Type: Tailpipe
- WARNING CA Proposition 65: No
- Heat Shield Attached: No
- Muffler Part Number: Kit Only
-
Features:
- Mandrel Bent 16 Gauge Aluminized Tubing
- Dual Side Exit
- 3 Year Limited Warranty
- Premium Flowmaster Quality
- Made in the USA
- These Builder Series tailpipes are constructed from 2.50-inch mandrel-bent 16-gauge aluminized steel tubing for maximum flow, tuck up high in the chassis for good clearance and exit out the sides behind the rear wheels. Designed to be used with a Single Inlet/Dual 2.50-inch Outlet mufflers such as part# 9430452 (Super 44 Series) or 530552 (Super 50 Series) muffler. Covered by our 3-year Limited Warranty. Note: Some fitment may be necessary. Does Not include installation hardware or exhaust tips.
Additional Fitment Information:
| Vehicle |
|---|
| 1999 - GMC K1500 |
- 2.25 in. Dual Inlet/3 in. Center Outlet; Case Dimensions 5 in. x 10 in. x 17 in.; 23 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required~Adapters Needed For OEM Exhaust
- 50 Series™ SUV Muffler; 2.25 in. Dual Inlet/3 in. Center 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: Center
- Inlet Diameter: 2.250 In.
- Sound Level: Mild
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 10.000 In.
- Muffler Series: Super 50 Series
- Inlet Inside Diameter: 2.250 In.
- Main Piping Diameter: 2.250 In.
- Inlet Position: Dual
- Inlet Outside Diameter: 2.250 In.
- 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.
This Part Fits the Following OEM/Substitute Numbers:
12278
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 1999 - GMC C2500 | V | - | 8 Cyl 5.7L | 350 |
- 50 Series™ SUV Muffler
- 2.25 in. Dual Inlet/3 in. Center Outlet; Case Dimensions 5 in. x 10 in. x 17 in.; 23 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required~Adapters Needed For OEM Exhaust
- 50 Series™ SUV Muffler; 2.25 in. Dual Inlet/3 in. Center 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: Center
- Inlet Diameter: 2.250 In.
- Sound Level: Mild
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 10.000 In.
- Muffler Series: Super 50 Series
- Inlet Inside Diameter: 2.250 In.
- Main Piping Diameter: 2.250 In.
- Inlet Position: Dual
- Inlet Outside Diameter: 2.250 In.
- 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 | CID |
|---|---|---|---|---|
| 1999 - GMC C2500 | V | - | 8 Cyl 7.4L | 454 |
- 3.0 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; 3.0 in. Offset Inlet/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
- Automotive Item Grade: High Performance
- Muffler Type: Reflection
- Outlet Connection Type: Pipe
- Outlet Position: Offset
- Sound Level: Aggressive
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 9.750 In.
- Muffler Series: 40 Series
- Main Piping Diameter: Oem
- Inlet Position: Offset
- 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
- The Original 40 series muffler delivers an aggressive exterior and interior tone. If you're 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 |
|---|---|---|---|---|
| 1999 - GMC Yukon | V | - | 8 Cyl 5.7L | 350 |
- 40 Series™ Muffler
- 3.0 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; 3.0 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
- Automotive Item Grade: High Performance
- Muffler Type: Reflection
- Outlet Connection Type: Pipe
- Outlet Position: Offset
- Sound Level: Aggressive
- WARNING CA Proposition 65: No
- Fitment: Universal
- Body Width: 9.750 In.
- Muffler Series: 40 Series
- Main Piping Diameter: Oem
- Inlet Position: Offset
- 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
- The Original 40 series muffler delivers an aggressive exterior and interior tone. If you're 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 |
|---|---|---|---|---|
| 1999 - GMC Yukon | V | - | 8 Cyl 5.7L | 350 |
- Single; Dual Rear Same Side Exit; w/Dual Cats; Includes 2.5 in. Tailpipes/70 Series(TM) Big Block II Muffler/3 in. Logo Embossed Stainless Tips;50 State Legal / California Emissions Compliant w/Dual Catalytic Converters
- American Thunder Cat Back Exhaust System; Single; Dual Rear Same Side Exit; w/Dual Cats; Includes 2.5 in. Tailpipes/70 Series™ Big Block II Muffler/3 in. Logo Embossed Stainless Tips;
- American Thunder Cat Back Exhaust System
- Product Attributes:
- Tip Quantity: 2
- Tubing Diameter: 2.500 In.
- Exhaust Type: Single
- Inlet Diameter: 2.000 In.
- WARNING CA Proposition 65: Yes
- Exhaust Series: American Thunder
- Heat Shield Attached: No
- Exit Style: Straight
- Muffler Series: 70 Series Big Block
- Inlet Inside Diameter: N/a
- Outlet Outside Diameter: 2.500 In.
- Tail Pipe Diameter: 2.500 In.
- Exit Position: Dual Rear Same Side
- Muffler Count: 1
- System Type: Cat Back
- Muffler Part Number: 530702
-
Features:
- Mandrel Bent 16ga Aluminized Tubing
- Moderate to Aggressive 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 is looking for an aluminized steel cat-back exhaust system with an aggressive exterior tone and moderate interior tone. The American Thunder(R) system is heavy 16-gauge mandrel-bent aluminized steel tubing for durability and maximum performance. Includes a aluminized steel 70(TM) Series Big Block II performance muffler for that perfect blend of a deep aggressive exterior sound, with a moderate interior tone that won't drive you out of the cab when having a conversation. The dual 2.50-inch tailpipes clear the factory spare tire and give you two choices of exit locations. Straight out the back for that true dual look, or exiting out each side behind the rear wheels, which is ideal for towing. The system is finished off with a pair of highly polished 3.00-inch 304 stainless steel tips embossed with the Flowmaster(R) name. Designed for an easy fit, these systems include all necessary parts, hardware and instructions for an easy installation you can do at home. Covered by our 3-year Limited Warranty. For those who prefer full stainless steel construction with a Lifetime Limited Warranty, check out part# 817470. Notes: Fits 2/4 wheel drive models with extended cab/short bed configuration 141-inch wheelbase.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
This Part Fits the Following OEM/Substitute Numbers:
15750, 65520, 817470
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Bed Length | Body | CID |
|---|---|---|---|---|---|---|
| 1999 - GMC C1500 | V | - | 8 Cyl 5.7L | 78.0 | Extended Cab Pickup | 350 |
- 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 | Body | CID |
|---|---|---|---|---|---|---|
| 1999 - GMC Sierra 1500 | V | 5328 | 8 Cyl 5.3L | 78.0 | Extended Cab Pickup | 325 |
- 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 | CID |
|---|---|---|---|---|
| 1999 - GMC Sierra 1500 | V | - | 8 Cyl 4.8L | 294 |
- 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 | CID |
|---|---|---|---|---|
| 1999 - GMC Sierra 1500 | V | - | 8 Cyl 4.8L | 294 |
- 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 | CID |
|---|---|---|---|---|
| 1999 - GMC Sierra 1500 | V | - | 8 Cyl 4.8L | 294 |
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