Header Reducers & Extensions

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: Jan 19, 2026 if ordered today

• Special Order

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 COLLECTOR ADAPTER

Part Number: STW-HCA2-52O2

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Estimated Ship Date: Today

HEADER COLLECTOR ADAPTER

Part Number: STW-HCA3-52-5O2

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Estimated Ship Date: Today

HEADER COLLECTOR ADAPTER

Part Number: STW-HCA3-53-5O2

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

• Drop Ship
• Special Order

Header Collector Adapter, Reducer, 3.0 in. 3-Bolt Flange, 2.25 in.Out., 6.0 in. OAL., 304L SS, Each

Part Number: STW-HCA32-25

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

• Drop Ship
• Special Order

Lead Pipe Kit: Factory Connect 2015-2025 Mustang GT

Part Number: STW-M15LDSFC

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

• Free Shipping
• Special Order

HEADER COLLECTOR ADAPTER

Part Number: STW-HCA32-25O2

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

• Special Order

Lead Pipe Kit: Performance Connect 2015-2025 Mustang GT

Part Number: STW-M15LDSPC

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

• Free Shipping
• Special Order

Lead Pipe Kit: Aftermarket Connect 2015-2025 Mustang GT

Part Number: STW-M15LDSLG

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

• Free Shipping
• Special Order