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Exhaust Mufflers and Resonators

Borla

Borla CrateMuffler Mopar BB 383/413/426/440 S-Type 2.5in Offset/Offset 14inx4.35inx9in Oval Muffler

$442.99 $395.99 Save $47.00

SKU: B00F 400942

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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

Part #: 400942

Borla(r)'s CrateMuffler is the world's first muffler purpose-built to optimize the sound & power of crate and custom built motors. The mufflers are directional. The outlet can be identified by the mounting bracket welded to the endcap. The directional design provides custom sound, tuned for each engine family and will dramatically reduce, or eliminate drone on specified applications. Built from premium T-304 stainless steel, superior to T-400 series (such as 409), to give you the absolute best in performance and durability. Precision computer numerical control (CNC) manufacturing ensures an accurate fit and best of all, Borla(r) stands behind every CrateMuffler with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.

Features:

  • CrateMufflers are tuned for specific engines
  • When installed on cataloged applications, they will reduce, or eliminate drone
  • Mufflers have directional flow. Outlet end has mounting bracket on it.
  • Add resonator 400938 to attain the Touring sound level

S-Type CrateMuffler For Big Block Chrysler/ Dodge/ Plymouth (Mopar) Moderate Output 383/ 413/ 426/ 440 V8.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

MIA's Description

The Borla CrateMuffler BB 383/413/426/440 S-Type is a high-performance exhaust component engineered for crate and custom-built big block Chrysler engines. Designed with a 2.5-inch offset/offset oval configuration, this muffler enhances exhaust flow while delivering an aggressive sound profile. Constructed from durable T-304 stainless steel, it offers excellent corrosion resistance and long-lasting durability. The S-Type design optimizes sound quality and power output, making it suitable for enthusiasts seeking a balance of performance and tone. Its robust build ensures reliable operation under demanding conditions, providing both performance gains and a distinctive exhaust note. This muffler is compatible with Chrysler big block engines, including the 383, 413, 426, and 440 cubic inch displacements. It is intended for use in applications such as crate engines, custom builds, and performance upgrades. The universal fitment allows for straightforward installation on compatible vehicles, serving as a direct replacement or upgrade for stock mufflers. The kit includes the muffler itself, designed for bolt-on installation, and is ideal for street and performance use. Its optimized design enhances exhaust flow and sound, making it suitable for enthusiasts looking to improve both sound and performance in their Chrysler-powered vehicles.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandBorla
Part NumberB00F 400942

Buy with Confidence

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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