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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
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Description
Flowmaster 42543 40 Series, MufflerProduct Description 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. Exhaust Muffler; 40 Series Original; 9 1 2 Inch Width x 4 Inch Height Oval Aluminized Steel Case; Single 2 1 2 Inch Offset Inlet; Single 2 1 2 Inch Offset Outlet; 13 Inch Body 19
Product Description
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.
Exhaust Muffler; 40 Series ™ Original; 9-1/2 Inch Width x 4 Inch Height Oval Aluminized Steel Case; Single 2-1/2 Inch Offset Inlet; Single 2-1/2 Inch Offset Outlet; 13 Inch Body/ 19 Inch Overall Length; Painted; Black; Modifications To The Exhaust System May Be Necessary For Installation
Features & Benefits
- Durable Fully Welded 16 Gauge Aluminized Steel
- Aggressive Sound Exterior Exhaust Tone
- Noticeable Interior Resonance
- Excellent Street Or Strip And Off Road Application
- Limited 3 Year Warranty
Attributes
- Inlet Diameter (IN): 2-1/2 Inch
- Outlet Diameter (IN): 2-1/2 Inch
- Material: Aluminized Steel
- Shape: Oval
- Inlet Position: Offset Single
- Outlet Position: Offset Single
- Universality: Semi-Universal
- Estimated Install Time (Hours): 1
- Case Diameter (IN): 9-1/2 Inch X 4 Inch
- Case Length (IN): 13 Inch
- Overall Length (IN): 19 Inch
- Color/ Finish: Black Painted
- Wall Type: Single Wall
- Includes Tip: Without Tip
- Tip Length (IN): Without Tip
- Tip Diameter (IN): Without Tip
- Tip Finish: Without Tip
- Tip Material: Without Tip
Installation Instructions
Warranties
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 3
Nice but not great
Fits true to size. I ordered a small and it was a great fit. Could be a bit softer. Loved the style. Not too thin or not heavy, nice weight. This quality of the sweater was nice, however the buttons broke apart as I was styling the cardigan. Not happy to have to sew on small buttons to fit the small holes. It’s nice but I had to put too much effort into wearing it.
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Reviewed in the United States on February 11, 2026
★★★★★ 4
Great product
Color: Black, Size: Medium
Love it. Fit is great. The only issue is pilling
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Reviewed in the United States on April 22, 2026
★★★★★ 1
not as pictured
Color: Light Grey, Size: Small
This is very boxy and looks nothing like the photo. Sad
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Reviewed in the United States on December 4, 2025
★★★★★ 5
A Must buy
Color: Beige, Size: Medium
For the price, can’t beat it! Comfortable, stylish and so soft!
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Reviewed in the United States on January 10, 2026
★★★★★ 3
not very crop
Color: Black, Size: X-Large
longer than pictured, but comfortable so far.
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Reviewed in the United States on January 30, 2026