
Product Discontinued
Currently Unavailable
This product is no longer available. Please call customer service for assistance at 1-800-345-4545.
GM Cars
- Y-Pipe
- For Headers #387-11133-1 and #387-11134-1
- Ceramic Coated
Connects OE-style cat-back exhaust to headers. Off-road use only. Not emissions-legal for street.
Part TypeExhaust Tubing
BrandFLOWTECH
Package Height5.5
Package Width34.0
Package Length39.0
Weight19.0 PG
Part CategoryPerformance Parts
Hardware IncludedNo
Oxygen Sensor Bung IncludedNo
Center Line RadiusN/A
PositionN/A
Outlet Diameter3 in (76.2 mm)
QuantitySold individually
Y-Pipe FinishCeramic coated
MaterialMild Steel
Inlet Attachment3-bolt flange
Gauge16
Gaskets IncludedNo
Y-Pipe MaterialSteel
Leg/Straight LengthN/A
Outlet AttachmentSlip-fit
Inlet Diameter3 in (76.2 mm)
Catalytic Converter IncludedNo
FinishSilver Metallic Ceramic
Header StyleY-Pipe
Vendor Part Number11133Y-1FLT
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations




