Header Reducers & Extensions

Oxygen Sensor Reducer; Tube Size 2.5 in.; Collector Size 3 in.; w/Ball And Socket Flanges; Mild Steel

Part Number: HED-21143

4.5 out of 5 stars ( 8 )

Estimated Ship Date: Monday 6/16/2025

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

Part Number: SUM-G4752SS

3.2 out of 5 stars ( 10 )

Estimated Ship Date: Monday 6/16/2025

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

Part Number: HED-21134

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Monday 6/16/2025

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

Part Number: PYE-PVR19S

4.67 out of 5 stars ( 9 )

Estimated Ship Date: Monday 6/16/2025

Header Reducers, 3.000 in. Diameter, Ball and Socket Flange, Steel, Aluminized, Each

Part Number: HED-21154

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 6/16/2025

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

Part Number: SUM-G4751

4.29 out of 5 stars ( 21 )

Estimated Ship Date: Monday 6/16/2025

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

Part Number: HOK-11032HKR

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 6/16/2025

Collector Bolts, 12-Point Head, Stainless Steel, Natural, 3/8 in.-24, 1.500 UHL, Set of 6

Part Number: ARP-400-1215

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 6/16/2025

Collector Rings, 3.50 in., Weld-On, 3-Bolt Flange, Steel, Natural, Pair

Part Number: SUM-G4762

4.17 out of 5 stars ( 6 )

Estimated Ship Date: Monday 6/16/2025

Header Reducers, 3-Bolt Flange, 3.00 in. Inlet, 2.25 in. Outlet, Steel, Natural, Pair

Part Number: SUM-G4751ID

4.5 out of 5 stars ( 6 )

Estimated Ship Date: Monday 6/16/2025

Header Reducers, 3-Bolt Flange, 3.00 in. Inlet, 2.50 in. Outlet, Steel, Natural, Pair

Part Number: SUM-G4754ID

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Monday 6/16/2025

Header Reducers, Ball and Socket Flange, 3 in. Inlet, 2.25 in. Outlet, Steel, Painted, Pair

Part Number: HED-21114

4.73 out of 5 stars ( 11 )

Estimated Ship Date: Monday 6/16/2025

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: Monday 6/16/2025

Collector Rings, 2.50 in., Weld-On, 3-Bolt Flange, Steel, Natural, Pair

Part Number: SUM-G4760

3.9 out of 5 stars ( 10 )

Estimated Ship Date: Monday 6/16/2025

Header Reducer, with Oxygen Sensor Bung, 3-Bolt Flange, 3.00 in. Inlet, 3.00 in. Outlet, Stainless Steel, Natural, Each

Part Number: HED-22126

3.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 6/16/2025

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: Monday 6/16/2025

Header Collector Extensions, 3-Bolt, 3.50 in. Diameter, 12.0 in. Length, Gaskets, Fasteners, Pair

Part Number: SUM-670164

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 6/16/2025

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: Monday 6/16/2025

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

Part Number: SUM-626102

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 6/16/2025

Header Collector Reducers, Steel, Zinc Plated, 3-Bolt, 3.50 in. Diameter, Composite Gaskets, Pair

Part Number: PTE-H7245

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Monday 6/16/2025

Header Reducers, Angled, 3-bolt Flange, Steel, Painted, 2.5 in. To 2.25 in., Pair

Part Number: SNH-A-RED25

4.08 out of 5 stars ( 12 )

Estimated Ship Date: Monday 6/16/2025

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

Part Number: JEX-AHB1

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 6/16/2025

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

Part Number: SUM-670161

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 6/16/2025

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: Monday 6/16/2025

Header Starter Tubes, Ball and Socket, 2-Bolt Flange, 304 Stainless Steel, 2.5 in. Diameter, O2 Bungs, Pair

Part Number: JBA-31650-1ST

Not Yet Reviewed

Estimated Ship Date: Monday 6/16/2025

• Free Shipping