Header Reducers & Extensions

Header Fasteners, Bolts, Locking, 12-Point, Steel, Nickel Plated, Chevy, V6, Small Block V8, Set of 12

Part Number: STG-8931B

Not Yet Reviewed

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: Apr 6, 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 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

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, 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 COLLECTOR ADAPTER

Part Number: STW-HCA2-52-25O2

Not Yet Reviewed

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 ADAPTER

Part Number: STW-HCA3-53O2

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

• Drop Ship
• Special Order

Header Starter Tubes, Ball/Socket, 2-Bolt Flange, 409 Stainless Steel, 2.5 in. Diameter, with JBA-1653, Pair

Part Number: JBA-1653ST

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

Collector Bolts, Hex Head, Locking, Steel, Nickel Plated, 10mm x 1.50 Thread, 65mm UHL, Set of 6

Part Number: STG-8950N

Not Yet Reviewed

Estimated Ship Date: Today

COLLECTOR FLANGE

Part Number: PTE-H7269

Not Yet Reviewed

Estimated Ship Date: Feb 25, 2026 if ordered today

• Drop Ship
• Special Order

HEADER COLLECTOR ADAPTER

Part Number: STW-HCA3-52-5O2

Not Yet Reviewed

Estimated Ship Date: Today

HEADER COLLECTOR ADAPTER

Part Number: STW-HCA2-52O2

Not Yet Reviewed

Estimated Ship Date: Today

SB Ford Header, 3/8" x 16", 1-1/4 Bolt Kit 12 PT head, set of 16

Part Number: STG-8933B

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

• Drop Ship
• Special Order

Header Reducer, Terminator Reducers/Street Hookups, 3 Bolt, Inlet 3.5 in., Outlet 2.5 in., Each

Part Number: BIG-10016FLT

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

• Drop Ship
• Special Order

LS1, LS2, LS6 Chevy w/8mm x 30mm, 1-1/4" underhead, 12 pt head, set of 12

Part Number: STG-8930B

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

• Drop Ship
• Special Order

Collector Bolts, Hex Head, Locking, Steel, Nickel Plated, 10mm x 1.5 Thread, Set of 4

Part Number: STG-8950M

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Collector Bolts, Hex Head, Locking, Steel, Nickel Plated, 10mm x 1.50 Thread, 75mm UHL, Set of 6

Part Number: STG-8950F

Not Yet Reviewed

Estimated Ship Date: Today

HEADER COLLECTOR ADAPTER

Part Number: STW-HCA3-53-5O2

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

• Drop Ship
• Special Order