Header Reducers & Extensions

Collector Flanges, 3-Bolt, 3.5 in. I.D., Gaskets, Fasteners, Set

Part Number: PTE-H7261

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

Collector Flanges, 3-Bolt, 2.5 in. I.D., Gaskets, Fasteners, Set

Part Number: PTE-H7259

4.65 out of 5 stars ( 17 )

Estimated Ship Date: Today

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: Today

• Free Shipping

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

Part Number: STW-HCA3-53

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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: Today

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: Today

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: Today

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

Part Number: PTE-H7244

4.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

Collector Reducer 2 1/2"

Part Number: PTE-H7249

Not Yet Reviewed

Estimated Ship Date: Today

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

Part Number: HOK-11435HKR

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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: Today

HEADER COLLECTOR ADAPTER

Part Number: STW-HCA2-52-25O2

Not Yet Reviewed

Estimated Ship Date: Today

Exhaust Header Extension, Stainless Steel, 3-Bolt Flange, 2.50 in. Diameter, 6 in. Length, Each

Part Number: STW-HCA2-52-5

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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

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

Part Number: JBA-31650ST

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Collector Reducers, 3-Bolt, 2.5 in. to 2.0 in., Gaskets, Fasteners, Pair

Part Number: PTE-H7248

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Today

Header Collector Adapter, Reducer, 2.5 in. 3-Bolt Flange, 2.25 in.Out., 6.0 in. OAL., 304L SS, Each

Part Number: STW-HCA2-52-25

Not Yet Reviewed

Estimated Ship Date: Oct 13, 2025 if ordered today

• Drop Ship
• Special Order

Header Reducers, 3-Bolt Flange, 2.5 in. Inlet, 2.0 in. Outlet, Steel, Zinc, Gaskets, Hardware, Pair

Part Number: PTE-H7250

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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

Part Number: PTE-H7242

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Today

3 1/2" 3 bolt, 3 1/2" od outlet, 6" overall length. 304 S/S Construction, tig welded, 3/8" thick laser cut fl

Part Number: STW-HCA3-53-5

Not Yet Reviewed

Estimated Ship Date: Oct 13, 2025 if ordered today

• Drop Ship
• Special Order

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

Exhaust Collector Flanges, 2-Bolt, 2.0 in. I.D., Gaskets, Fasteners, Set

Part Number: PTE-H7257

3.57 out of 5 stars ( 7 )

Estimated Ship Date: Today

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: Today

Header Collector Flanges, 3-Bolt, 2.5 in. Inlet, Steel, Natural, Gaskets, Hardware, Set

Part Number: PTE-H7254

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Sep 18, 2025 if ordered today

• Drop Ship
• Special Order