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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 409S stainless steel and fully MIG welded for maximum durability.
40 Series Stainless Steel – 2.50 Offset In / 2.50 Offset Out – Aggressive Sound
2.5IN(O)/OUT(O) 40 SERIES 409S
MUFF 2.50IN
Universal Muffler – Some adaptation may be required.
| Brand |
Flowmaster |
|---|---|
| Part Number (MPN) |
8042543 |
| SKU |
8042543 |
| UPC / GTIN |
700042022564 / 00700042022564 |
| Condition |
New |
| Disclaimer |
Yes |
| Body Height |
4.00 |
| Body Length |
13.00 |
| Body Material |
409 Stainless Steel |
| Body Width |
9.50 |
| California Proposition 65 Chemical Name |
Chromium (hexavalent compounds) |
| Category |
Exhaust |
| Clamping Type |
Flat Band |
| Clamps Included |
No |
| Emission Code |
5 |
| Exhaust Tip Quantity |
0 |
| Finish |
High-Temperature Paint |
| Fitment |
Universal |
| Grade Type |
Performance |
| Hanger Included |
No |
| Heat Shield Attached |
No |
| Inlet Connection |
Slip-Fit |
| Inlet Diameter |
2.50 |
| Inlet Inside Diameter |
2.50 |
| Inlet Location |
Offset |
| Inlet Outside Diameter |
2.63 |
| Inlet Quantity |
1 |
| Inlet Type |
Weld-On |
| Mount Type |
Uses New Hangers (Not Included) |
| Muffler Series |
Original 40 Series |
| Muffler Type |
Chambered |
| Outlet Connection |
Slip-Fit |
| Outlet Inside Diameter |
2.50 |
| Outlet Location |
Offset |
| Outlet Outside Diameter |
2.63 |
| Outlet Quantity |
1 |
| Outlet Type |
Single |
| Overall Length |
19.00 |
| part type |
Exhaust Muffler |
| Product Type |
Street Mufflers |
| Reversible |
No |
| Shape |
Oval |
| Sound Level |
Aggressive |
| Sub Category |
Mufflers |
| Tunable |
No |
| Vehicle Type |
Street Rod |
| Warning |
California Proposition 65 |
| Year |
1985 |
| Make |
Buick |
| Model |
Regal |
| Body & Trim |
Base |
| Engine & Transmission |
3.8L V6 – Gas |
Vehicle Fitment
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