Header Reducers & Extensions

Header Collector Extensions, 3.0 in. 3-Bolt Flange, 3 in. Pipe, Pair

Part Number: HED-18701

4.46 out of 5 stars ( 26 )

Estimated Ship Date: Tomorrow

Header Starter Tubes, Ball and Socket, 2-Bolt Flange, 409 Stainless Steel, 2.5 in. Diameter, O2 Bungs, Pair

Part Number: JBA-1650-1ST

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

Header Reducers, 3-Bolt Flange, 3.50 in. Inlet, 2.50 in. Outlet, Steel, Painted, Pair

Part Number: HOK-11035HKR

4.75 out of 5 stars ( 8 )

Estimated Ship Date: Tomorrow

Collector Bolts, Hex Head, Locking, Steel, Nickel Plated, 3/8 in.-16 Thread, 3 in. Length, Set of 6

Part Number: STG-8950C

5.0 out of 5 stars ( 14 )

Estimated Ship Date: Tomorrow

Header Collector Extensions, 3-Bolt, 3.00 in. Diameter, 12.0 in. Length, Gaskets, Fasteners, Pair

Part Number: SUM-670162

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Header Collector Adapter, Reducer, 3.0 in. 3-Bolt Flange, 3.0 in.Out., 6.0 in. OAL., 304L SS, Each

Part Number: STW-HCA33

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

Header Collector Extensions, 3.0 in. Universal Flange, 3 in. Pipe, Pair

Part Number: HED-18702

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

Header Reducer, Stainless Steel, Bolt-On, 3 in. 3-bolt Flange, 2.50 in. Out, 6.0 in. OAL, Each

Part Number: STW-HCA32-5

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

Header Collector Extensions, 3-Bolt, 2.50 in. Diameter, 18.0 in. Length, Gaskets, Fasteners, Pair

Part Number: SUM-670161

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

Collector Reducers, 3-bolt Flange, Steel, Zinc Finish, 3.5 in. To 3.0 in., 5.0 in. Length, Pair

Part Number: PTE-H7235

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

Collector Reducers, 3-Bolt, 3 in. to 2.5 in., O2 Sensor Bungs, Gaskets, Fasteners, Pair

Part Number: PTE-H7233

3.75 out of 5 stars ( 4 )

Estimated Ship Date: Oct 29, 2025 if ordered today

Header Reducers, 3-Bolt Flange, 3.5 in. Inlet, 2.5 in. Outlet, Stainless Steel, 12.000 in. Long, Polished, Pair

Part Number: SUM-626123

Not Yet Reviewed

Estimated Ship Date: Tomorrow

Header Reducers, Header Buddies, Aluminumized Steel, 3-Bolt Flange, 3 in. Inlet, 2.50 in. Outlet, Pair

Part Number: JEX-AHB1

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

Header Reducers, 3-Bolt Flange, 2.5 in. Inlet, 2.25 in. Outlet, O2 Bung, Steel, Natural, Pair

Part Number: BIG-10105FLT

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

Exhaust Header Extension, Stainless Steel, 3-Bolt Flange, 2.50 in. Diameter, 6 in. Length, Each

Part Number: STW-HCA2-52-5

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

Collector Bolts, Hex Head, Locking, Steel, Nickel Plated, 3/8 in.-16 Thread, 2.5 in. Length, Set of 6

Part Number: STG-8950B

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Tomorrow

Header Collector Extensions, Slip-On, 3.50 in. Diameter, 18.0 in. Length, Pair

Part Number: SUM-670168

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Header Collector Extensions, 3-Bolt, 2.50 in. Diameter, 12.0 in. Length, Gaskets, Fasteners, Pair

Part Number: SUM-670160

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow

Collector Reducers, 3-Bolt, 3.5 in. to 2.5 in., Gaskets, Fasteners, Pair

Part Number: PTE-H7236

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

Header Reducers, 3-Bolt Flange, 3 in. Inlet, 3 in. Outlet, Steel, Aluminized, Pair

Part Number: HED-21121

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

Header Reducers, 3-Bolt Flange, 3.00 in. Inlet, 2.125 in. Outlet, Steel, Painted, Pair

Part Number: HOK-11030HKR

4.67 out of 5 stars ( 3 )

Header Collector Adapter, Reducer, 3.5 in. 3-Bolt Flange, 2.5 in.Out., 6.0 in. OAL., 304L SS, Each

Part Number: STW-HCA3-52-5

Not Yet Reviewed

Estimated Ship Date: Tomorrow

Header Collector Extensions, Slip-On, 3.00 in. Diameter, 18.0 in. Length, Pair

Part Number: SUM-670167

Not Yet Reviewed

Estimated Ship Date: Tomorrow

Header Reducers, Header Buddies, Aluminumized Steel, 3-Bolt Flange, 3.0 in. Inlet, 3.0 in. Outlet, Pair

Part Number: JEX-AHB3

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow