Borla 400945 | Exhaust Muffler

Part Number
CrateMuffler; 2.5 in. In/Out; 14 in. L x 4.35 in. W x 9 in. H; Offset/Center; For LS3 Crate Engines; ATAK Sound Level
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This muffler is directional. The outlet can be identified by the mounting bracket welded to the endcap.

BRAND: Borla


  • Distinctive Mounting Endplate Bracket
  • Choose Your Sound
  • Million Mile Warranty
  • CrateMuffler®
  • Aircraft-Grade Brushed Finish T-304 Stainless Steel
  • Made In The USA
  • CrateMuffler®; 2.5 in. In/Out; 14 in. L x 4.35 in. W x 9 in. H; Offset/Center; For LS3 Crate Engines; ATAK® Sound Level;


Body Height9.000 in.
Body Length14.000 in.
Body Width4.350 in.
Inlet Connection TypePipe
Inlet Inside Diameter2.500 in.
Inlet Outside Diameter2.500 in.
Inlet PositionOffset
Inlet TypeSingle Center
Main Piping Diameter2.500 in.
Material304 Stainless Steel
Muffler Count1
Outlet Outside Diameter2.500 in.
Outlet PositionCenter
Outlet TypeSingle Center Outlet
Overall Length14.000 in.
Tip Quantity0
WARNING CA Proposition 65Yes
WARNING CA Proposition 65 MessageWARNING: This product in the physical form it is sold does not present a hazard. However; operations including; but not limited to welding; brazing; or thermal cutting can expose you to chemicals including Chromium; Nickel; Cobalt; Arsenic; Cadmium and Lead which are known to the State Of California to cause cancer; birth defects and other reproductive harm. For more information go to


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