Header Reducers & Extensions

Header Collector Extensions, 3.0 in. 3-Bolt Flange, 2.25 in. Pipe, Pair

Part Number: HED-18803

4.6 out of 5 stars ( 10 )

Estimated Ship Date: Sep 24, 2025 if ordered 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: Monday 7/14/2025

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: Monday 7/14/2025

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: Monday 7/14/2025

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: Monday 7/14/2025

Collector Reducer 2 1/2"

Part Number: PTE-H7249

Not Yet Reviewed

Estimated Ship Date: Monday 7/14/2025

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

Part Number: HOK-11230HKR

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 7/14/2025

• Free Shipping

Header Collector, Ball/Socket, 2.5 in. Inlet, 2.25 in. Outlet, Steel, Zinc Plated, Composite Gaskets, Pair

Part Number: PTE-H7247

3.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 7/14/2025

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

Part Number: BIG-10110FLT

3.67 out of 5 stars ( 9 )

Estimated Ship Date: Monday 7/14/2025

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

Part Number: JEX-AWHC212

4.15 out of 5 stars ( 27 )

Estimated Ship Date: Monday 7/14/2025

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: Monday 7/14/2025

Header Reducer, 3-Bolt, 4-Bolt, Universal Flange, 3 in. Inlet, 2.25 in. Outlet, Steel, Natural, Each

Part Number: HED-21108

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 7/14/2025

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: Monday 7/14/2025

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: Monday 7/14/2025

HEADER COLLECTOR ADAPTER

Part Number: STW-HCA2-52-25O2

Not Yet Reviewed

Estimated Ship Date: Monday 7/14/2025

• Free Shipping

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

Part Number: BIG-10004FLT

4.75 out of 5 stars ( 8 )

Estimated Ship Date: Monday 7/14/2025

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

Part Number: SNH-S-RED25

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 7/14/2025

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

Part Number: HED-21107

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 7/14/2025

Exhaust Collector Reducer, Steel, Natural, 3.5 in. Inlet, 2.5 in. Outlet, 4.625 in. Length, Each

Part Number: SCH-2535

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 7/14/2025

Header Collector Extensions, 3.0 in. Universal Flange, 2.25 in. Pipe, Pair

Part Number: HED-18805

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 7/14/2025

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: Monday 7/14/2025

Header Reducers, Collector Reducers, 3-bolt Flange, 2.500 in. Collector Diameter, 2.250 in. Reducer Outlet Diameter, Steel, Zinc Finish, Gaskets, Kit

Part Number: PTE-H7229

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 7/14/2025

Header Reducer 3" with welded rings small end 2 1/2" pair

Part Number: TRD-9374

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 7/14/2025

Header Collector Extensions, 3.5 in., Slip-Fit, 18-Gauge, Fits 3.5 in. Pipe, 48 in. Length, Each

Part Number: SCH-480035

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 7/14/2025

• Oversize $7.99

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: Jul 24, 2025 if ordered today