Header Reducers

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

Part Number: HED-21126

3.0 out of 5 stars ( 8 )

Estimated Ship Date: Today

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: Today

Header Reducers, 3-Bolt Flange, Steel, Natural, 2.5 in. Inlet, 2.5 in. Outlet, 4 in. Length, Each

Part Number: APH-9071

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Header Reducers, 3-Bolt Flange, 3 in. Inlet, 2.25 in. Outlet, 409 Stainless Steel, Natural, Pair

Part Number: SUM-G4750SS

2.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

Reducers 3 in. x 2.125 in., 3 Bolt Flange, Pair

Part Number: BIG-10007FLT

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Today

Collector Reducers, 3-Bolt, 2.50 in. to 2.25 in., O2 Sensor Bungs, Gaskets, Fasteners, Pair

Part Number: PTE-H7232

Not Yet Reviewed

Estimated Ship Date: Nov 12, 2026 if ordered today

• Drop Ship
• Special Order

Exhaust Reducer, Stainless Steel, 2.5 in. to 2.0 in. Diameter, Natural, Each

Part Number: STW-HCA2-52

Not Yet Reviewed

Estimated Ship Date: Today

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

Part Number: HOK-11036HKR

4.94 out of 5 stars ( 18 )

Estimated Ship Date: Today

Header Reducer, with Oxygen Sensor Bung, 3-Bolt Flange, 2.5 in. Inlet, 2 in. Outlet, Steel, Natural, Each

Part Number: HED-21106

Not Yet Reviewed

Estimated Ship Date: Today

HEADER COLLECTOR ADAPTER

Part Number: STW-HCA2-52-25O2

Not Yet Reviewed

Estimated Ship Date: Today

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 )

Estimated Ship Date: Today

Header Reducer, Steel, Aluminized, 3-Bolt Flange, 3.5 in. Inlet, 2.5 in. Outlet, Each

Part Number: JEX-AWHC312

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Nov 3, 2026 if ordered today

• Drop Ship
• Special Order

HEADER COLLECTOR ADAPTER

Part Number: STW-HCA2-52O2

Not Yet Reviewed

Estimated Ship Date: Dec 21, 2026 if ordered today

• Drop Ship
• Special Order

HEADER COLLECTOR ADAPTER

Part Number: STW-HCA32-25O2

Not Yet Reviewed

Estimated Ship Date: Dec 23, 2026 if ordered today

• Drop Ship
• Special Order

Header Reducers, 3-Bolt Flange, Steel, Natural, 3 in. Inlet, 2.5 in. Outlet, 4.5 in. Length, Each

Part Number: APH-9073

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Nov 9, 2026 if ordered today

• Drop Ship
• Special Order