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Exhaust› Mufflers and Resonators

Flowmaster

40 Series Delta Flow Chambered Muffler 40 Delta Flow 2.50 Offset In 2.50 Offset Out Aggressive Sound Flowmaster

$172.95 $134.95 Save $38.00

SKU: F00L 942543

In Stock
In Stock
Ships by Nov 13
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

This two-chamber muffler features Flowmaster's patented Delta Flow technology for increased scavenging, improved performance, and reduced interior sound compared to the original 40 series. Constructed from durable 16 gauge aluminized steel and fully MIG welded, it offers a milder exterior tone and reduced interior resonance. This part does not affect vehicle emissions.
Show original supplier description

Part #: 942543

This two chamber design incorporates Flowmaster's Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound.Milder exterior tone and reduced interior resonance over standard 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.No internal packing to blowoutExcellent Street/Strip and Off Road applicationRace proven Delta Flow technologyDurable fully welded 16 gauge aluminized steel

Features:

  • Durable Fully Welded 16ga Aluminized Steel
  • No internal packing to blowout
  • Race Proven Patented Delta Flow (R) Technology
  • Excellent Street/Strip and Off Road application
  • Excellent Street/Strip And Off Road Application
  • Race proven Delta Flow technology
  • No Internal Packing To Blow Out
  • Durable fully welded 16 gauge aluminized steel

40 Series (TM) Delta Flow Muffler | 2.5 in. Offset Inlet/2.5 in. Opposite Side Offset Outlet | Case Dimensions 4 in. x 9.75 in. x 13 in. | 19 in. Overall Length | Aluminized Steel

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 NumberF00L 942543
5,000+ Trusted brands
1M+ Enthusiasts
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(760) 282-4645 hello@motormia.co

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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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