Exhaust› Mufflers and Resonators

Flowmaster

50 Series Delta Flow 3-Chamber Muffler

$156.55

SKU: 942553-HI

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Flowmaster 50 Series Delta Flow muffler is a 3-chamber muffler designed for street rods, cars, and trucks. It utilizes patented Delta Flow technology and an internal tuning chamber to reduce interior sound. Constructed from 16-gauge aluminized steel with MIG-welded seams, this muffler offers durability and a mild to moderate exterior tone with minimal interior resonance.
Show original supplier description
The Flowmaster 50 Series Delta Flow muffler is engineered with a 3-chamber design that incorporates patented Delta Flow technology and an internal tuning chamber. This combination effectively reduces interior resonance while maintaining a mild to moderate exterior exhaust tone. Built for durability, it features fully MIG-welded seams and is constructed from 16-gauge aluminized steel, capable of withstanding high heat and vibration. This muffler is an excellent choice for street rods, cars, and trucks, offering improved horsepower and torque, with potential mileage improvements. It features a 2.5-inch offset inlet and a 2.5-inch offset outlet, with an oval body measuring 17 x 9.75 x 4 inches and an overall length of 23 inches. The exterior is finished with black paint for a sleek look. While marketed as universal, some adaptation may be required for installation. The manufacturer provides a 3-year limited warranty for this product. Specific vehicle applications mentioned include the 1967-1981 Chevrolet Camaro and the 1967-1981 Pontiac Firebird, but its universal design aims for broader compatibility across various vehicles.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandFlowmaster
Part Number942553-HI
CategoryExhaust
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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