Flowmaster
Flowmaster 80 Series Chambered Muffler – 2.50" Offset In/Dual Out
Flowmaster 80 Series Chambered Muffler – 2.50" Offset In/Dual Out
SKU:F1342583
In stock
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- Genuine brand-name parts
- Ships from US warehouse
- 30-day returns
The Flowmaster 42583 is a 80 series chambered muffler for Chevrolet Camaro. It is a new, genuine Flowmaster part with the manufacturer warranty, shipped from the closest US warehouse.
Fits: Chevrolet Camaro
Key features
- AGGRESSIVE FLOWMASTER SOUND: Transverse-mounted design delivers an aggressive exterior sound level with a deep tone, while maintaining moderate interior resonance for a balanced driving experience. It’s the ideal muffler for rear-mounted systems, making it a favorite among muscle car builders, restorers, and weekend racers. Perfect for muscle cars, retro builds, and tight-clearance applications like GM F-body vehicles (Camaro & Firebird).
- PERFECT FOR GM F-BODY VEHICLES: Designed for tight-clearance performance cars like the Chevrolet Camaro, Pontiac Firebird, and Trans Am. The transverse crossflow chambered design enhances exhaust scavenging and airflow, improving horsepower, throttle response, and delivering the aggressive Flowmaster tone. This space-saving setup fits in the stock location behind the rear axle, making it ideal for muscle cars, retro builds, and other tight-clearance applications without requiring a full custom exhaust.
- DURABLE CONSTRUCTION: Built from 16-gauge aluminized steel and fully MIG-welded for maximum strength and longevity. Resists heat, corrosion, and road damage for years of dependable performance.
- PERFORMANCE-DRIVEN FITMENT: Precision-engineered for tight-clearance applications including classic GM F-body cars, retro-mods, and custom builds. Ideal for rear-mounted systems, the transverse layout mounts neatly behind the rear axle with no major modifications required. Main case dimensions: 4” x 9.5” x 15”.
- UNIVERSAL CONFIGURATIONS AVAILABLE: Offered in multiple inlet/outlet setups to match a variety of performance exhaust systems, making it a versatile choice for street, strip, or show.
Specifications
| Brand | Flowmaster |
|---|---|
| Manufacturer part number | 42583 |
| Part type | Muffler |
| UPC / GTIN | 700042010363 |
| Vehicle fitment | Chevrolet Camaro |
| Weight | 13.00 lb |
| Dimensions (L × W × H) | 24 × 10 × 4 in |
| Category | Engine & Drivetrain |
| Condition | New — genuine brand-name part |
| Warranty | Manufacturer warranty |
Questions
Will this fit my vehicle?
It is listed for Chevrolet Camaro. Trim, engine and options can change the part a vehicle needs — send us your VIN and we will confirm before you order.
How fast does it ship?
Orders ship from the closest US warehouse, normally within 1–3 business days, with tracking by e-mail.
Is this a genuine Flowmaster part?
Yes — new and genuine Flowmaster, with the manufacturer warranty.
Can I return it?
Yes. Unused items can be returned within 30 days — see our refund policy for the details.
Shipping & delivery
Shipping & delivery
Orders ship from the distributor warehouse closest to you, normally within 1–3 business days of purchase. Standard ground delivery takes 3–7 business days in the continental US; expedited options are shown at checkout. Oversized items (bumpers, running boards, large tonneau covers, some marine equipment) ship LTL freight — we contact you to schedule delivery and a signature is required.
Returns & warranty
Returns & warranty
Unused, uninstalled parts in original packaging can be returned within 30 days of delivery. A restocking fee of up to 20% may apply depending on the product and supplier, and return shipping is the buyer’s responsibility unless the item arrived defective, damaged or incorrect. Every product carries the full manufacturer warranty. Contact us with your order number to start a return.
Fitment & part numbers
Fitment & part numbers
Verify fitment with the manufacturer part number shown above and your vehicle’s year, make, model and trim. If the listing says “Fits select…”, confirm your exact application before ordering. Not sure? Send us your VIN and the part number and we’ll check it for you.
