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1971-1974 B-Body 383 400 426 440 Engine Dual Exhaust System
SKU: 1971-74-B-Body-Mopar-ClasE
1971-1974 MOPAR B-Body Dual Exhaust System – 383, 400, 426 HEMI, 440
This factory-style dual exhaust system fits 1971–1974 Dodge Chargers, Plymouth Road Runners, Satellites, and GTX models with 383, 400, 426 HEMI, or 440 engines. It includes exhaust pipes, mufflers, and tailpipes—all built to OEM specs.
1971-1974 MOPAR B-Body Dual Exhaust System
Fits 383, 400, 426 HEMI, 440 Engines – Charger, Road Runner, Satellite, GTX
Unleash factory-correct sound and classic MOPAR muscle with our dual exhaust system built specifically for 1971–1974 B-Body Dodge and Plymouth models equipped with big block 383, 400, 426 HEMI, or 440 engines. Whether you're restoring a numbers-matching classic or upgrading your weekend warrior, this system delivers the factory look, fit, and aggressive tone true MOPAR fans demand.
Crafted to OEM specifications and built using high-quality aluminized or stainless steel, this system provides reliable performance and a sound that's unmistakably vintage MOPAR.
Standard Kit Includes:
- Left & Right Exhaust Pipes (2-1/4"" diameter)
- Left & Right Mufflers (OEM-style sound)
- Left & Right Tail Pipes (2-1/4"" diameter)
Stainless steel systems with stock mufflers take approx. 4–6 weeks to fabricate.
Optional Upgrades:
- Turbo Mufflers – Deep, aggressive rumble
- GlassPak Mufflers – Loud and attention-grabbing
- Tailpipe Turn-Downs or Prepped for Chrome Tips
- Universal Clamp & Hanger Kit (Mild Steel)
Chrome tips sold separately through a third-party source.
Vehicle Fitment:
- 1971–1974 Dodge Charger (383, 400, 426 HEMI, 440)
- 1971–1974 Plymouth Satellite (383, 400, 426 HEMI, 440)
- 1971–1974 Plymouth Road Runner (383, 400, 426 HEMI, 440)
- 1971 Plymouth GTX (440, 426 HEMI)
Important Fitment Notes:
- Header Users: This system is designed for OEM exhaust manifolds only.
If you are using aftermarket headers, you must cut and modify the front pipes for proper fitment.
System is sold “AS-IS” for header applications.
- Manifold Casting Numbers: Please provide casting numbers. We’ll verify compatibility before fabrication.
- Welded Flanges: Depending on your application, flanges may or may not come welded.
Materials & Construction
- Built to OEM specs using compression bending (no mandrel bending)
- Mild steel or 304 stainless steel tubing
- 18–16 gauge construction for durability and factory-style aesthetics
- Designed for local car show quality and everyday driving
Material Options:
- Aluminized Steel: 14–16 gauge tubing, 18 gauge mufflers
- Stainless Steel: 304 tubing (14 gauge), 409 mufflers (18 gauge)
Returns & Warranty Policy
- No refunds due to rising material/labor costs
- Free re-bending available for incorrectly fabricated parts (if OEM manifold info was accurate)
- Returns accepted only if the entire system is incorrect
- Must be requested within 14 days and be unused, undamaged, and in original packaging
- Subject to 15% restocking fee
Customer is responsible for any corrections needed due to incorrect or incomplete vehicle information.
Why Choose Our System?
- Tailored specifically for 383, 400, 426 HEMI & 440 B-Body MOPARs
- Options for sound customization and chrome tip compatibility
- Expertly handcrafted in the USA
- Backed by real enthusiasts who know classic MOPARs inside and out
Turn heads and preserve authenticity with a dual exhaust system engineered to perform, last, and sound like the golden age of muscle cars.
- ManufacturerClassic Exhaust
- BrandClassic Exhaust
- MPN1971-74-B-Body-Mopar
- Part Number_3332241971-74-B-Body-Mopar
- Part Number1971-74-B-Body-Mopar
- Brand NameClassic Exhaust
- VendorClassic Exhaust
- MaterialAluminized Steel, Stainless Steel
- Muffler OptionsOEM Stock Muffler(s), With Hemi Style Turbo Muffler(s) - (Aluminized Steel Only)
- Resonator OptionsWith Resonator(s), Without Resonator(s)
- Tail Pipe DesignPrep For Chrome Tips, With Turn Down Tails
- Universal Mild Steel Heavy Duty Clamp/Hanger KitWith Universal Clamp/Hanger Kit, Without Universal Clamp/Hanger Kit
Shipping
We utilize UPS, Fedex, and USPS for all of our shipping needs. Carrier choice is based upon availability and needs of the customer and is the sole discretion of SouthernCarParts. We always try to ship within 24 hours of order placement (do to the custom nature of some products, shipping within 24 hours is impossible, actual shipping time frames will be listed in the product description). Please keep in mind that some products such as Custom Fit Car Covers, Lloyds Floor Mats, Painted accessories, and Racemesh Products can take 3 -10 days to ship and are charged at time of order placement. Racemesh products take 4 weeks to ship as they are made to order.
Returns
Should you need to return a part for refund, exchange, or credit, please contact our returns department within 30 days of purchase at orders@southerncarparts.com for a Return Merchandise Authorization (RMA) number. Most problems, such as installation, can be solved with a telephone call (888-631-1433). Southern Car Parts will not accept returned goods without prior authorization and an RMA# written clearly on the exterior of the box. The customer is responsible for freight on all return orders. Parts authorized to be returned, on a non-exchange basis, are subject to a 20% restocking fee. Returns will only be accepted within 30 days of the original date of shipment. Custom painted parts - Once these parts are started, we can refund you less the paint(chemicals) that have been used. Exception is rear spoilers and front splitters, we can refund less 20%.
Custom-made-to-order items are NOT returnable. This includes embroidered floor mats, interior embroidered items, and car covers.
Damages in Shipping
All damages from shipping must be reported to Southern Car Parts within two business days from tracking number delivery confirmation. After two business days, damages become the responsibility of the customer.
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