BORLA'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. This muffler is tuned for both the Ford Small Block 289/ 302 (Exc. Coyote 5.0L)/ 351W CID V8 & Big Block 390/ 427/ 428/ 460 CID V8 FE Series engine families. The directional design provides the classic S-Type sound and will dramatically reduce, or eliminate drone on specified applications. Add resonator 400938 to attain the Touring sound. Muffler dimensions 2.5" Offset Inlet/ 2.5" Center Outlet, 4.35" x 9.10" Oval, 14" Long Body, 19" Overall Length. 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 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.
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Custom Field
Product TypePerformance Muffler
Muffler SeriesCrateMuffler - S-Type
Manufacturer Part Number400831
ManufacturerBorla Exhaust
Overall Length19 in
Outlet Quantity1
Outlet LocationCenter
Muffler TypePerformance
Muffler FinishStainless Steel
Muffler ConfigurationOffset/Center
MaterialT304 Stainless Steel
Inlet Quantity1
Inlet LocationOffset
Body Width9.10 in
Body TypeOval
Body Length14 in
Body Height4.35 in
Outlet Diameter2.5 in
Inlet Diameter2.5 in
FeaturesCrateMufflers are tuned for specific engines
Features2When installed on cataloged applications, they will reduce, or eliminate drone
Features3CrateMuffler Ford Small Block 289/ 302 (Exc. Coyote 5.0L)/ 351W CID V8 High Output & Big Block 390/ 427/ 428/ 460 CID V8 FE Series Moderate Output
Features4Mufflers have directional flow. Outlet end has mounting bracket on it
Features5Mufflers have directional flow. Outlet end has mounting bracket on it