Flowmaster 15938 Exhaust Flange

Part Number
Header Collector Ball Flange Kit; 2.5 in. Collector To 2.5 in. System; Welding Required; Sold In Pairs
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This header collector kit takes the place of three bolt flange type connections and allows for a leak free and gasket free ball flange type connection. Available in various sizes.

BRAND: Flowmaster


  • 16 Gauge Aluminized Tubing
  • 2.5 in. Collector To 2.5 in. Tubing
  • 3 Year Limited Warranty
  • Ball Flange Kit 2.5in to 2.5in Pair
  • Header Collector Ball Flange Kit
  • Header Collector Ball Flange Kit; 2.5 in. Collector To 2.5 in. System; Welding Required; Sold In Pairs;
  • Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations
  • Leak Free Ball and Socket Seal
  • Pipe; Exhaust; Headers; Adapter; Collector; Performance
  • Premium Flowmaster Quality
  • Replaces Three Bolt Flange Connection
  • Slip Fit Connections for Easy Assembly
  • Universal Item - Not a direct fit. Some adaptation required.


Attachment MethodBall and Socket Flange
Automotive Item GradeHigh Performance Part
Bolt Circle DiameterN/A
Bolts Or Studs IncludedYes
Engine Make/SizeUniversal Engine
FinishStainless Steel
Flange Thickness0.375 in.
Inlet Connection TypeStraight Pipe
Inlet Diameter2.500 in.
Item Height3.000 in.
Matching Tube Size2.500 in. ID
MaterialAluminized Steel
Material Gauge16
Outlet Connection TypeStraight Pipe
Outlet Diameter2.500 in.
Product WidthOEM
Thickness0.375 in.
TitleFlowmaster 15938 Header Collector Ball Flange Kit- 2.50 in. to 2.50 in. - Pair - requires welding
WARNING CA Proposition 65No


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