Summit Racing Header Reducers & Extensions

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

Part Number: SUM-G4757

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Today

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: Today

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: Today

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

Part Number: SUM-626100

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Collector Bolts, Hex Head, Stainless Steel, Natural, 3/8 in.-16 x 1.0 in. Long, Set of 6

Part Number: SUM-G1590HS

4.06 out of 5 stars ( 17 )

Estimated Ship Date: Today

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: 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

Header Reducer, Ball/Socket Flange, 3 in. Inlet, 2.5 in. Outlet, Oxygen Sensor Fitting, Steel, Each

Part Number: SUM-626104

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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

Part Number: SUM-670167

Not Yet Reviewed

Estimated Ship Date: Today

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

Part Number: SUM-G4755ID

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

Collector Bolts, Split Lock, 3/8-16 in., 12-Point Head, 1.000 in. UHL, Steel, Black Oxide, Set of 6

Part Number: SUM-910130

Not Yet Reviewed

Estimated Ship Date: Today

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

Part Number: SUM-670166

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2025 if ordered today

• Special Order