Header Reducers

Header Reducers, 3-Bolt Flange, 3.50 in. Inlet, 3.00 in. Outlet, Steel, Natural, Pair

Part Number: SUM-G4753ID

4.14 out of 5 stars ( 7 )

Estimated Ship Date: Today

Header Collector, 3-Bolt, 3.00 in. Inlet/Outlet Diameter, Steel, Zinc Plated, Composite Gaskets, Pair

Part Number: PTE-H7237

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Today

Header Reducer, Ball/Socket Flange, 3 in. Inlet, 3 in. Outlet, Oxygen Sensor Fitting, Steel, Each

Part Number: HED-21134

3.88 out of 5 stars ( 8 )

Estimated Ship Date: Today

Header Reducers, Stainless, Natural, Ball and Socket Flange, 2.5 in. Collector, 2.5 in. Reducer Outlet, Pair

Part Number: HED-22129

Not Yet Reviewed

Estimated Ship Date: Today

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Header Reducers, Ball and Socket Flange, 3 in. Inlet, 2.5 in. Outlet, Steel, Aluminized, Pair

Part Number: HED-21112

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

Header Reducer, with Oxygen Sensor Bung, 3-Bolt Flange, 3 in. Inlet, 2.5 in. Outlet, Steel, Painted, Each

Part Number: SUM-626102

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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

Part Number: PTE-H7246

4.9 out of 5 stars ( 10 )

Estimated Ship Date: Today

Header Reducer, 3-Bolt Flange, 3.0 in. Inlet, 2.5 in. Outlet, Oxygen Sensor Fitting, Steel, Each

Part Number: HED-21142

4.41 out of 5 stars ( 17 )

Estimated Ship Date: Today

Header Reducers, 3-Bolt Flange, 3.5 in. Inlet, 2.5 in. Outlet, Steel, Zinc, Gaskets, Hardware, Pair

Part Number: PTE-H7252

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Today

Header Reducers, Collector Reducers, 3-bolt Flange, 2.500 in. Diameter, Stainless Steel, Natural, Each

Part Number: STW-HCA2-52-5O2

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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

Part Number: HED-21103

4.4 out of 5 stars ( 5 )

Estimated Ship Date: Today

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 6, 2025 if ordered today

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• Special Order

Header Reducers, Collector Reducers, 3-bolt Flange, 3.000 in. Collector Diameter, 2.500 in. Reducer Outlet Diameter, Stainless Steel, Natural, Each

Part Number: STW-HCA32-5O2

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Header Reducers, 3-Bolt Flange, 2.50 in. Inlet, 2.00 in. Outlet, Steel, Natural, Pair

Part Number: SUM-G4755

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Today

Header Reducer, with Oxygen Sensor Bung, 3-Bolt Flange, 2.5 in. Inlet, 2.25 in. Outlet, Steel, Painted, Each

Part Number: SUM-626103

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Header Reducers, 2.500 in. Diameter, Ball and Socket Flange, Steel, Aluminized, Each

Part Number: HED-21153

4.75 out of 5 stars ( 8 )

Estimated Ship Date: Today

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

Part Number: BIG-10005FLT

4.17 out of 5 stars ( 12 )

Estimated Ship Date: Today

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

Part Number: SUM-G4757ID

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Header Collector, 3-Bolt, 2.50 in. Inlet/Outlet Diameter, Steel, Zinc Plated, Composite Gaskets, Pair

Part Number: PTE-H7239

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

Header Reducers, Ball and Socket Flange, 2.5 in. Inlet, 2 in. Outlet, Steel, Painted, Pair

Part Number: HED-21113

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Today

Header Reducer, with Oxygen Sensor Bung, 3-Bolt Flange, 3 in. Inlet, 3 in. Outlet, Steel, Painted, Each

Part Number: SUM-626101

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Header Reducers, 3-Bolt Flange, 3 in. Inlet, 2 1/4 in. Outlet, Steel, Natural, Pair

Part Number: PTE-H7251

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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: Today

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

Part Number: HED-21100

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Collector Adapter 3" inlet 3" outlet with O2 bung

Part Number: STW-HCA33-O2

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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